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89 | <H2> |
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90 | <FONT SIZE="-1"> |
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91 | org.apache.hadoop.mapred.lib</FONT> |
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92 | <BR> |
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93 | Class CombineFileRecordReader<K,V></H2> |
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94 | <PRE> |
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95 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> |
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96 | <IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapred.lib.CombineFileRecordReader<K,V></B> |
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97 | </PRE> |
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98 | <DL> |
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99 | <DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><K,V></DD> |
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100 | </DL> |
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101 | <HR> |
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102 | <DL> |
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103 | <DT><PRE>public class <B>CombineFileRecordReader<K,V></B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><K,V></DL> |
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104 | </PRE> |
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105 | |
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106 | <P> |
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107 | A generic RecordReader that can hand out different recordReaders |
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108 | for each chunk in a <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib"><CODE>CombineFileSplit</CODE></A>. |
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109 | A CombineFileSplit can combine data chunks from multiple files. |
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110 | This class allows using different RecordReaders for processing |
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111 | these data chunks from different files. |
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112 | <P> |
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113 | |
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114 | <P> |
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115 | <DL> |
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116 | <DT><B>See Also:</B><DD><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib"><CODE>CombineFileSplit</CODE></A></DL> |
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117 | <HR> |
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118 | |
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119 | <P> |
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120 | <!-- =========== FIELD SUMMARY =========== --> |
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128 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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129 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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130 | <CODE>protected <A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></FONT></TD> |
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131 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#curReader">curReader</A></B></CODE> |
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132 | |
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133 | <BR> |
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134 | </TD> |
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135 | </TR> |
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136 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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137 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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138 | <CODE>protected <A HREF="../../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A></CODE></FONT></TD> |
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139 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#fs">fs</A></B></CODE> |
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140 | |
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141 | <BR> |
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142 | </TD> |
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143 | </TR> |
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144 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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145 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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146 | <CODE>protected int</CODE></FONT></TD> |
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147 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#idx">idx</A></B></CODE> |
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148 | |
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149 | <BR> |
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150 | </TD> |
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151 | </TR> |
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152 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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153 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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154 | <CODE>protected <A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A></CODE></FONT></TD> |
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155 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#jc">jc</A></B></CODE> |
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156 | |
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157 | <BR> |
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158 | </TD> |
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159 | </TR> |
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160 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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161 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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162 | <CODE>protected long</CODE></FONT></TD> |
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163 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#progress">progress</A></B></CODE> |
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164 | |
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165 | <BR> |
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166 | </TD> |
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167 | </TR> |
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168 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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169 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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170 | <CODE>protected <A HREF="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A></CODE></FONT></TD> |
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171 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#reporter">reporter</A></B></CODE> |
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172 | |
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173 | <BR> |
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174 | </TD> |
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175 | </TR> |
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176 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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177 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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178 | <CODE>protected <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>>></CODE></FONT></TD> |
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179 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#rrClass">rrClass</A></B></CODE> |
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180 | |
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181 | <BR> |
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182 | </TD> |
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183 | </TR> |
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184 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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185 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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186 | <CODE>protected <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</A><<A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>>></CODE></FONT></TD> |
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187 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#rrConstructor">rrConstructor</A></B></CODE> |
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188 | |
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189 | <BR> |
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190 | </TD> |
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191 | </TR> |
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192 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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193 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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194 | <CODE>protected <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib">CombineFileSplit</A></CODE></FONT></TD> |
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195 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#split">split</A></B></CODE> |
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196 | |
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197 | <BR> |
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198 | </TD> |
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199 | </TR> |
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200 | </TABLE> |
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201 | |
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202 | <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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203 | |
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204 | <A NAME="constructor_summary"><!-- --></A> |
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205 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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206 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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207 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
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208 | <B>Constructor Summary</B></FONT></TH> |
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209 | </TR> |
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210 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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211 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#CombineFileRecordReader(org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.lib.CombineFileSplit, org.apache.hadoop.mapred.Reporter, java.lang.Class)">CombineFileRecordReader</A></B>(<A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
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212 | <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib">CombineFileSplit</A> split, |
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213 | <A HREF="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A> reporter, |
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214 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>>> rrClass)</CODE> |
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215 | |
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216 | <BR> |
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217 | A generic RecordReader that can hand out different recordReaders |
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218 | for each chunk in the CombineFileSplit.</TD> |
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219 | </TR> |
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220 | </TABLE> |
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221 | |
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222 | <!-- ========== METHOD SUMMARY =========== --> |
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223 | |
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224 | <A NAME="method_summary"><!-- --></A> |
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225 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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226 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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227 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
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228 | <B>Method Summary</B></FONT></TH> |
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229 | </TR> |
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230 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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231 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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232 | <CODE> void</CODE></FONT></TD> |
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233 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#close()">close</A></B>()</CODE> |
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234 | |
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235 | <BR> |
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236 | Close this <A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><CODE>InputSplit</CODE></A> to future operations.</TD> |
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237 | </TR> |
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238 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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239 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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240 | <CODE> <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A></CODE></FONT></TD> |
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241 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#createKey()">createKey</A></B>()</CODE> |
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242 | |
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243 | <BR> |
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244 | Create an object of the appropriate type to be used as a key.</TD> |
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245 | </TR> |
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246 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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247 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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248 | <CODE> <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A></CODE></FONT></TD> |
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249 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#createValue()">createValue</A></B>()</CODE> |
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250 | |
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251 | <BR> |
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252 | Create an object of the appropriate type to be used as a value.</TD> |
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253 | </TR> |
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254 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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255 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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256 | <CODE> long</CODE></FONT></TD> |
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257 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#getPos()">getPos</A></B>()</CODE> |
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258 | |
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259 | <BR> |
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260 | return the amount of data processed</TD> |
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261 | </TR> |
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262 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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263 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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264 | <CODE> float</CODE></FONT></TD> |
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265 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#getProgress()">getProgress</A></B>()</CODE> |
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266 | |
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267 | <BR> |
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268 | return progress based on the amount of data processed so far.</TD> |
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269 | </TR> |
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270 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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271 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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272 | <CODE>protected boolean</CODE></FONT></TD> |
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273 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#initNextRecordReader()">initNextRecordReader</A></B>()</CODE> |
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274 | |
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275 | <BR> |
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276 | Get the record reader for the next chunk in this CombineFileSplit.</TD> |
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277 | </TR> |
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278 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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279 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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280 | <CODE> boolean</CODE></FONT></TD> |
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281 | <TD><CODE><B><A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#next(K, V)">next</A></B>(<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A> key, |
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282 | <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A> value)</CODE> |
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283 | |
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284 | <BR> |
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285 | Reads the next key/value pair from the input for processing.</TD> |
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286 | </TR> |
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287 | </TABLE> |
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288 | <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
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289 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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290 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
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291 | <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH> |
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292 | </TR> |
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293 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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294 | <TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> |
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295 | </TR> |
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296 | </TABLE> |
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297 | |
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298 | <P> |
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299 | |
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300 | <!-- ============ FIELD DETAIL =========== --> |
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301 | |
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302 | <A NAME="field_detail"><!-- --></A> |
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305 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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306 | <B>Field Detail</B></FONT></TH> |
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307 | </TR> |
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308 | </TABLE> |
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309 | |
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310 | <A NAME="split"><!-- --></A><H3> |
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311 | split</H3> |
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312 | <PRE> |
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313 | protected <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib">CombineFileSplit</A> <B>split</B></PRE> |
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314 | <DL> |
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315 | <DL> |
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316 | </DL> |
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317 | </DL> |
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318 | <HR> |
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319 | |
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320 | <A NAME="jc"><!-- --></A><H3> |
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321 | jc</H3> |
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322 | <PRE> |
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323 | protected <A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> <B>jc</B></PRE> |
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324 | <DL> |
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325 | <DL> |
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326 | </DL> |
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327 | </DL> |
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328 | <HR> |
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329 | |
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330 | <A NAME="reporter"><!-- --></A><H3> |
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331 | reporter</H3> |
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332 | <PRE> |
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333 | protected <A HREF="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A> <B>reporter</B></PRE> |
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334 | <DL> |
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335 | <DL> |
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336 | </DL> |
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337 | </DL> |
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338 | <HR> |
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339 | |
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340 | <A NAME="rrClass"><!-- --></A><H3> |
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341 | rrClass</H3> |
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342 | <PRE> |
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343 | protected <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>>> <B>rrClass</B></PRE> |
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344 | <DL> |
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345 | <DL> |
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346 | </DL> |
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347 | </DL> |
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348 | <HR> |
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349 | |
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350 | <A NAME="rrConstructor"><!-- --></A><H3> |
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351 | rrConstructor</H3> |
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352 | <PRE> |
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353 | protected <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</A><<A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>>> <B>rrConstructor</B></PRE> |
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354 | <DL> |
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355 | <DL> |
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356 | </DL> |
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357 | </DL> |
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358 | <HR> |
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359 | |
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360 | <A NAME="fs"><!-- --></A><H3> |
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361 | fs</H3> |
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362 | <PRE> |
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363 | protected <A HREF="../../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A> <B>fs</B></PRE> |
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364 | <DL> |
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365 | <DL> |
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366 | </DL> |
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367 | </DL> |
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368 | <HR> |
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369 | |
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370 | <A NAME="idx"><!-- --></A><H3> |
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371 | idx</H3> |
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372 | <PRE> |
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373 | protected int <B>idx</B></PRE> |
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374 | <DL> |
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375 | <DL> |
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376 | </DL> |
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377 | </DL> |
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378 | <HR> |
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379 | |
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380 | <A NAME="progress"><!-- --></A><H3> |
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381 | progress</H3> |
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382 | <PRE> |
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383 | protected long <B>progress</B></PRE> |
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384 | <DL> |
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385 | <DL> |
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386 | </DL> |
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387 | </DL> |
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388 | <HR> |
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389 | |
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390 | <A NAME="curReader"><!-- --></A><H3> |
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391 | curReader</H3> |
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392 | <PRE> |
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393 | protected <A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>> <B>curReader</B></PRE> |
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394 | <DL> |
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395 | <DL> |
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396 | </DL> |
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397 | </DL> |
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398 | |
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399 | <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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400 | |
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401 | <A NAME="constructor_detail"><!-- --></A> |
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402 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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403 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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404 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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405 | <B>Constructor Detail</B></FONT></TH> |
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406 | </TR> |
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407 | </TABLE> |
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408 | |
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409 | <A NAME="CombineFileRecordReader(org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.lib.CombineFileSplit, org.apache.hadoop.mapred.Reporter, java.lang.Class)"><!-- --></A><H3> |
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410 | CombineFileRecordReader</H3> |
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411 | <PRE> |
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412 | public <B>CombineFileRecordReader</B>(<A HREF="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
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413 | <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib">CombineFileSplit</A> split, |
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414 | <A HREF="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A> reporter, |
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415 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A><<A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>>> rrClass) |
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416 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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417 | <DL> |
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418 | <DD>A generic RecordReader that can hand out different recordReaders |
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419 | for each chunk in the CombineFileSplit. |
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420 | <P> |
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421 | <DL> |
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422 | |
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423 | <DT><B>Throws:</B> |
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424 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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425 | </DL> |
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426 | |
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427 | <!-- ============ METHOD DETAIL ========== --> |
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428 | |
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429 | <A NAME="method_detail"><!-- --></A> |
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430 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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431 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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432 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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433 | <B>Method Detail</B></FONT></TH> |
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434 | </TR> |
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435 | </TABLE> |
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436 | |
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437 | <A NAME="next(java.lang.Object,java.lang.Object)"><!-- --></A><A NAME="next(K, V)"><!-- --></A><H3> |
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438 | next</H3> |
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439 | <PRE> |
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440 | public boolean <B>next</B>(<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A> key, |
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441 | <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A> value) |
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442 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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443 | <DL> |
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444 | <DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#next(K, V)">RecordReader</A></CODE></B></DD> |
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445 | <DD>Reads the next key/value pair from the input for processing. |
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446 | <P> |
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447 | <DD><DL> |
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448 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#next(K, V)">next</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></DL> |
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449 | </DD> |
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450 | <DD><DL> |
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451 | <DT><B>Parameters:</B><DD><CODE>key</CODE> - the key to read data into<DD><CODE>value</CODE> - the value to read data into |
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452 | <DT><B>Returns:</B><DD>true iff a key/value was read, false if at EOF |
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453 | <DT><B>Throws:</B> |
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454 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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455 | </DD> |
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456 | </DL> |
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457 | <HR> |
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458 | |
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459 | <A NAME="createKey()"><!-- --></A><H3> |
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460 | createKey</H3> |
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461 | <PRE> |
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462 | public <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A> <B>createKey</B>()</PRE> |
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463 | <DL> |
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464 | <DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#createKey()">RecordReader</A></CODE></B></DD> |
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465 | <DD>Create an object of the appropriate type to be used as a key. |
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466 | <P> |
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467 | <DD><DL> |
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468 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#createKey()">createKey</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></DL> |
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469 | </DD> |
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470 | <DD><DL> |
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471 | |
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472 | <DT><B>Returns:</B><DD>a new key object.</DL> |
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473 | </DD> |
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474 | </DL> |
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475 | <HR> |
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476 | |
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477 | <A NAME="createValue()"><!-- --></A><H3> |
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478 | createValue</H3> |
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479 | <PRE> |
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480 | public <A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A> <B>createValue</B>()</PRE> |
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481 | <DL> |
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482 | <DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#createValue()">RecordReader</A></CODE></B></DD> |
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483 | <DD>Create an object of the appropriate type to be used as a value. |
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484 | <P> |
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485 | <DD><DL> |
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486 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#createValue()">createValue</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></DL> |
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487 | </DD> |
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488 | <DD><DL> |
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489 | |
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490 | <DT><B>Returns:</B><DD>a new value object.</DL> |
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491 | </DD> |
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492 | </DL> |
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493 | <HR> |
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494 | |
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495 | <A NAME="getPos()"><!-- --></A><H3> |
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496 | getPos</H3> |
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497 | <PRE> |
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498 | public long <B>getPos</B>() |
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499 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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500 | <DL> |
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501 | <DD>return the amount of data processed |
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502 | <P> |
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503 | <DD><DL> |
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504 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#getPos()">getPos</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></DL> |
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505 | </DD> |
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506 | <DD><DL> |
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507 | |
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508 | <DT><B>Returns:</B><DD>the current position in the input. |
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509 | <DT><B>Throws:</B> |
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510 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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511 | </DD> |
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512 | </DL> |
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513 | <HR> |
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514 | |
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515 | <A NAME="close()"><!-- --></A><H3> |
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516 | close</H3> |
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517 | <PRE> |
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518 | public void <B>close</B>() |
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519 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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520 | <DL> |
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521 | <DD><B>Description copied from interface: <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#close()">RecordReader</A></CODE></B></DD> |
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522 | <DD>Close this <A HREF="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><CODE>InputSplit</CODE></A> to future operations. |
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523 | <P> |
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524 | <DD><DL> |
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525 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#close()">close</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></DL> |
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526 | </DD> |
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527 | <DD><DL> |
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528 | |
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529 | <DT><B>Throws:</B> |
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530 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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531 | </DD> |
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532 | </DL> |
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533 | <HR> |
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534 | |
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535 | <A NAME="getProgress()"><!-- --></A><H3> |
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536 | getProgress</H3> |
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537 | <PRE> |
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538 | public float <B>getProgress</B>() |
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539 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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540 | <DL> |
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541 | <DD>return progress based on the amount of data processed so far. |
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542 | <P> |
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543 | <DD><DL> |
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544 | <DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html#getProgress()">getProgress</A></CODE> in interface <CODE><A HREF="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</A><<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</A>,<A HREF="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</A>></CODE></DL> |
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545 | </DD> |
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546 | <DD><DL> |
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547 | |
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548 | <DT><B>Returns:</B><DD>progress from <code>0.0</code> to <code>1.0</code>. |
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549 | <DT><B>Throws:</B> |
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550 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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551 | </DD> |
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552 | </DL> |
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553 | <HR> |
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554 | |
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555 | <A NAME="initNextRecordReader()"><!-- --></A><H3> |
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556 | initNextRecordReader</H3> |
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557 | <PRE> |
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558 | protected boolean <B>initNextRecordReader</B>() |
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559 | throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE> |
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560 | <DL> |
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561 | <DD>Get the record reader for the next chunk in this CombineFileSplit. |
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562 | <P> |
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563 | <DD><DL> |
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564 | </DL> |
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565 | </DD> |
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566 | <DD><DL> |
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567 | |
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568 | <DT><B>Throws:</B> |
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569 | <DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL> |
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570 | </DD> |
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571 | </DL> |
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