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7 | Uses of Class org.apache.hadoop.mapred.join.TupleWritable (Hadoop 0.20.1 API) |
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83 | <H2> |
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84 | <B>Uses of Class<br>org.apache.hadoop.mapred.join.TupleWritable</B></H2> |
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85 | </CENTER> |
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86 | |
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87 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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89 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
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90 | Packages that use <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A></FONT></TH> |
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91 | </TR> |
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92 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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93 | <TD><A HREF="#org.apache.hadoop.mapred.join"><B>org.apache.hadoop.mapred.join</B></A></TD> |
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94 | <TD>Given a set of sorted datasets keyed with the same class and yielding equal |
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95 | partitions, it is possible to effect a join of those datasets prior to the map. </TD> |
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96 | </TR> |
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97 | </TABLE> |
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98 | |
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99 | <P> |
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100 | <A NAME="org.apache.hadoop.mapred.join"><!-- --></A> |
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101 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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103 | <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
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104 | Uses of <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> in <A HREF="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</A></FONT></TH> |
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105 | </TR> |
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106 | </TABLE> |
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107 | |
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108 | <P> |
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109 | |
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110 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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111 | <TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor"> |
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112 | <TH ALIGN="left" COLSPAN="2">Methods in <A HREF="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</A> that return <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A></FONT></TH> |
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113 | </TR> |
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114 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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115 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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116 | <CODE>protected <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A></CODE></FONT></TD> |
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117 | <TD><CODE><B>CompositeRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/CompositeRecordReader.html#createInternalValue()">createInternalValue</A></B>()</CODE> |
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118 | |
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119 | <BR> |
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120 | Create a value to be used internally for joins.</TD> |
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121 | </TR> |
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122 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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123 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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124 | <CODE> <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A></CODE></FONT></TD> |
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125 | <TD><CODE><B>JoinRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html#createValue()">createValue</A></B>()</CODE> |
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126 | |
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127 | <BR> |
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128 | Create an object of the appropriate type to be used as a value.</TD> |
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129 | </TR> |
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130 | </TABLE> |
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131 | |
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132 | <P> |
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133 | |
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134 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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135 | <TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor"> |
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136 | <TH ALIGN="left" COLSPAN="2">Methods in <A HREF="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</A> that return types with arguments of type <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A></FONT></TH> |
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137 | </TR> |
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138 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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139 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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140 | <CODE>protected <A HREF="../../../../../../org/apache/hadoop/mapred/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapred.join">ResetableIterator</A><<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></CODE></FONT></TD> |
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141 | <TD><CODE><B>JoinRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html#getDelegate()">getDelegate</A></B>()</CODE> |
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142 | |
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143 | <BR> |
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144 | Return an iterator wrapping the JoinCollector.</TD> |
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145 | </TR> |
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146 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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147 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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148 | <CODE> <A HREF="../../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join">ComposableRecordReader</A><<A HREF="../../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A>></CODE></FONT></TD> |
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149 | <TD><CODE><B>CompositeInputFormat.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html#getRecordReader(org.apache.hadoop.mapred.InputSplit, org.apache.hadoop.mapred.JobConf, org.apache.hadoop.mapred.Reporter)">getRecordReader</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</A> split, |
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150 | <A HREF="../../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</A> job, |
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151 | <A HREF="../../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</A> reporter)</CODE> |
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152 | |
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153 | <BR> |
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154 | Construct a CompositeRecordReader for the children of this InputFormat |
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155 | as defined in the init expression.</TD> |
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156 | </TR> |
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157 | </TABLE> |
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158 | |
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159 | <P> |
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160 | |
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161 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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162 | <TR BGCOLOR="#CCCCFF" CLASS="TableSubHeadingColor"> |
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163 | <TH ALIGN="left" COLSPAN="2">Methods in <A HREF="../../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</A> with parameters of type <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A></FONT></TH> |
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164 | </TR> |
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165 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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166 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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167 | <CODE> void</CODE></FONT></TD> |
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168 | <TD><CODE><B>JoinRecordReader.JoinDelegationIterator.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.JoinDelegationIterator.html#add(org.apache.hadoop.mapred.join.TupleWritable)">add</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> item)</CODE> |
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169 | |
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170 | <BR> |
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171 | </TD> |
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172 | </TR> |
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173 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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174 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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175 | <CODE>protected boolean</CODE></FONT></TD> |
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176 | <TD><CODE><B>InnerJoinRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/InnerJoinRecordReader.html#combine(java.lang.Object[], org.apache.hadoop.mapred.join.TupleWritable)">combine</A></B>(<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>[] srcs, |
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177 | <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> dst)</CODE> |
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178 | |
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179 | <BR> |
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180 | Return true iff the tuple is full (all data sources contain this key).</TD> |
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181 | </TR> |
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182 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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183 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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184 | <CODE>protected boolean</CODE></FONT></TD> |
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185 | <TD><CODE><B>OuterJoinRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/OuterJoinRecordReader.html#combine(java.lang.Object[], org.apache.hadoop.mapred.join.TupleWritable)">combine</A></B>(<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>[] srcs, |
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186 | <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> dst)</CODE> |
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187 | |
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188 | <BR> |
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189 | Emit everything from the collector.</TD> |
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190 | </TR> |
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191 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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192 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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193 | <CODE>protected boolean</CODE></FONT></TD> |
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194 | <TD><CODE><B>MultiFilterRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html#combine(java.lang.Object[], org.apache.hadoop.mapred.join.TupleWritable)">combine</A></B>(<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>[] srcs, |
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195 | <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> dst)</CODE> |
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196 | |
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197 | <BR> |
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198 | Default implementation offers <A HREF="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html#emit(org.apache.hadoop.mapred.join.TupleWritable)"><CODE>MultiFilterRecordReader.emit(org.apache.hadoop.mapred.join.TupleWritable)</CODE></A> every Tuple from the |
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199 | collector (the outer join of child RRs).</TD> |
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200 | </TR> |
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201 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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202 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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203 | <CODE>protected abstract boolean</CODE></FONT></TD> |
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204 | <TD><CODE><B>CompositeRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/CompositeRecordReader.html#combine(java.lang.Object[], org.apache.hadoop.mapred.join.TupleWritable)">combine</A></B>(<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>[] srcs, |
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205 | <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> value)</CODE> |
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206 | |
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207 | <BR> |
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208 | </TD> |
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209 | </TR> |
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210 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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211 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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212 | <CODE>protected <A HREF="../../../../../../org/apache/hadoop/mapred/join/OverrideRecordReader.html" title="type parameter in OverrideRecordReader">V</A></CODE></FONT></TD> |
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213 | <TD><CODE><B>OverrideRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/OverrideRecordReader.html#emit(org.apache.hadoop.mapred.join.TupleWritable)">emit</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> dst)</CODE> |
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214 | |
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215 | <BR> |
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216 | Emit the value with the highest position in the tuple.</TD> |
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217 | </TR> |
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218 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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219 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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220 | <CODE>protected abstract <A HREF="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html" title="type parameter in MultiFilterRecordReader">V</A></CODE></FONT></TD> |
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221 | <TD><CODE><B>MultiFilterRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html#emit(org.apache.hadoop.mapred.join.TupleWritable)">emit</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> dst)</CODE> |
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222 | |
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223 | <BR> |
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224 | For each tuple emitted, return a value (typically one of the values |
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225 | in the tuple).</TD> |
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226 | </TR> |
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227 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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228 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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229 | <CODE> boolean</CODE></FONT></TD> |
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230 | <TD><CODE><B>JoinRecordReader.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html#next(K, org.apache.hadoop.mapred.join.TupleWritable)">next</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html" title="type parameter in JoinRecordReader">K</A> key, |
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231 | <A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> value)</CODE> |
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232 | |
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233 | <BR> |
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234 | Emit the next set of key, value pairs as defined by the child |
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235 | RecordReaders and operation associated with this composite RR.</TD> |
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236 | </TR> |
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237 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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238 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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239 | <CODE> boolean</CODE></FONT></TD> |
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240 | <TD><CODE><B>JoinRecordReader.JoinDelegationIterator.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.JoinDelegationIterator.html#next(org.apache.hadoop.mapred.join.TupleWritable)">next</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> val)</CODE> |
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241 | |
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242 | <BR> |
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243 | </TD> |
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244 | </TR> |
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245 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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246 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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247 | <CODE> boolean</CODE></FONT></TD> |
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248 | <TD><CODE><B>JoinRecordReader.JoinDelegationIterator.</B><B><A HREF="../../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.JoinDelegationIterator.html#replay(org.apache.hadoop.mapred.join.TupleWritable)">replay</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</A> val)</CODE> |
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249 | |
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250 | <BR> |
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251 | </TD> |
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252 | </TR> |
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253 | </TABLE> |
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254 | |
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307 | <!-- ======== END OF BOTTOM NAVBAR ======= --> |
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308 | |
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309 | <HR> |
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310 | Copyright © 2009 The Apache Software Foundation |
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311 | </BODY> |
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312 | </HTML> |
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