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91 | org.apache.hadoop.util</FONT> |
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93 | Class ReflectionUtils</H2> |
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94 | <PRE> |
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100 | <DT><PRE>public class <B>ReflectionUtils</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></DL> |
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101 | </PRE> |
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102 | |
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103 | <P> |
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104 | General reflection utils |
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105 | <P> |
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106 | |
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121 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#ReflectionUtils()">ReflectionUtils</A></B>()</CODE> |
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137 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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138 | <CODE>static void</CODE></FONT></TD> |
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139 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#cloneWritableInto(org.apache.hadoop.io.Writable, org.apache.hadoop.io.Writable)">cloneWritableInto</A></B>(<A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A> dst, |
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140 | <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A> src)</CODE> |
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141 | |
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142 | <BR> |
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143 | <B>Deprecated.</B> </TD> |
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144 | </TR> |
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151 | <CODE><T> T</CODE></FONT></TD> |
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152 | </TR> |
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153 | </TABLE> |
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154 | </CODE></FONT></TD> |
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155 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#copy(org.apache.hadoop.conf.Configuration, T, T)">copy</A></B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf, |
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156 | T src, |
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157 | T dst)</CODE> |
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158 | |
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159 | <BR> |
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160 | Make a copy of the writable object using serialization to a buffer</TD> |
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161 | </TR> |
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162 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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169 | </TR> |
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170 | </TABLE> |
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171 | </CODE></FONT></TD> |
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172 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#getClass(T)">getClass</A></B>(T o)</CODE> |
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173 | |
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174 | <BR> |
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175 | Return the correctly-typed <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang"><CODE>Class</CODE></A> of the given object.</TD> |
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176 | </TR> |
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177 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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178 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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179 | <CODE>static void</CODE></FONT></TD> |
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180 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#logThreadInfo(org.apache.commons.logging.Log, java.lang.String, long)">logThreadInfo</A></B>(org.apache.commons.logging.Log log, |
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181 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> title, |
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182 | long minInterval)</CODE> |
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183 | |
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184 | <BR> |
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185 | Log the current thread stacks at INFO level.</TD> |
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186 | </TR> |
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187 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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188 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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189 | <CODE>static |
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191 | <TR ALIGN="right" VALIGN=""> |
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193 | <CODE><T> T</CODE></FONT></TD> |
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194 | </TR> |
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195 | </TABLE> |
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196 | </CODE></FONT></TD> |
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197 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#newInstance(java.lang.Class, org.apache.hadoop.conf.Configuration)">newInstance</A></B>(<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><T> theClass, |
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198 | <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</CODE> |
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199 | |
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200 | <BR> |
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201 | Create an object for the given class and initialize it from conf</TD> |
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202 | </TR> |
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203 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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204 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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205 | <CODE>static void</CODE></FONT></TD> |
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206 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#printThreadInfo(java.io.PrintWriter, java.lang.String)">printThreadInfo</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/PrintWriter.html?is-external=true" title="class or interface in java.io">PrintWriter</A> stream, |
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207 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> title)</CODE> |
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208 | |
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209 | <BR> |
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210 | Print all of the thread's information and stack traces.</TD> |
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211 | </TR> |
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212 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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213 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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214 | <CODE>static void</CODE></FONT></TD> |
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215 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#setConf(java.lang.Object, org.apache.hadoop.conf.Configuration)">setConf</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> theObject, |
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216 | <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</CODE> |
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217 | |
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218 | <BR> |
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219 | Check and set 'configuration' if necessary.</TD> |
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220 | </TR> |
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221 | <TR BGCOLOR="white" CLASS="TableRowColor"> |
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222 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
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223 | <CODE>static void</CODE></FONT></TD> |
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224 | <TD><CODE><B><A HREF="../../../../org/apache/hadoop/util/ReflectionUtils.html#setContentionTracing(boolean)">setContentionTracing</A></B>(boolean val)</CODE> |
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225 | |
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226 | <BR> |
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227 | </TD> |
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228 | </TR> |
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229 | </TABLE> |
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230 | <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
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231 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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232 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
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233 | <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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234 | </TR> |
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236 | <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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237 | </TR> |
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238 | </TABLE> |
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239 | |
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240 | <P> |
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241 | |
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242 | <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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243 | |
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247 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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248 | <B>Constructor Detail</B></FONT></TH> |
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249 | </TR> |
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250 | </TABLE> |
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251 | |
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252 | <A NAME="ReflectionUtils()"><!-- --></A><H3> |
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253 | ReflectionUtils</H3> |
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254 | <PRE> |
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255 | public <B>ReflectionUtils</B>()</PRE> |
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256 | <DL> |
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257 | </DL> |
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258 | |
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259 | <!-- ============ METHOD DETAIL ========== --> |
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260 | |
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261 | <A NAME="method_detail"><!-- --></A> |
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262 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
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263 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
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264 | <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
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265 | <B>Method Detail</B></FONT></TH> |
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266 | </TR> |
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267 | </TABLE> |
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268 | |
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269 | <A NAME="setConf(java.lang.Object, org.apache.hadoop.conf.Configuration)"><!-- --></A><H3> |
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270 | setConf</H3> |
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271 | <PRE> |
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272 | public static void <B>setConf</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> theObject, |
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273 | <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</PRE> |
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274 | <DL> |
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275 | <DD>Check and set 'configuration' if necessary. |
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276 | <P> |
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277 | <DD><DL> |
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278 | <DT><B>Parameters:</B><DD><CODE>theObject</CODE> - object for which to set configuration<DD><CODE>conf</CODE> - Configuration</DL> |
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279 | </DD> |
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280 | </DL> |
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281 | <HR> |
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282 | |
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283 | <A NAME="newInstance(java.lang.Class, org.apache.hadoop.conf.Configuration)"><!-- --></A><H3> |
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284 | newInstance</H3> |
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285 | <PRE> |
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286 | public static <T> T <B>newInstance</B>(<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><T> theClass, |
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287 | <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf)</PRE> |
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288 | <DL> |
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289 | <DD>Create an object for the given class and initialize it from conf |
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290 | <P> |
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291 | <DD><DL> |
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292 | <DT><B>Parameters:</B><DD><CODE>theClass</CODE> - class of which an object is created<DD><CODE>conf</CODE> - Configuration |
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293 | <DT><B>Returns:</B><DD>a new object</DL> |
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294 | </DD> |
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295 | </DL> |
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296 | <HR> |
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297 | |
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298 | <A NAME="setContentionTracing(boolean)"><!-- --></A><H3> |
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299 | setContentionTracing</H3> |
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300 | <PRE> |
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301 | public static void <B>setContentionTracing</B>(boolean val)</PRE> |
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302 | <DL> |
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303 | <DD><DL> |
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304 | </DL> |
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305 | </DD> |
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306 | </DL> |
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307 | <HR> |
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308 | |
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309 | <A NAME="printThreadInfo(java.io.PrintWriter, java.lang.String)"><!-- --></A><H3> |
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310 | printThreadInfo</H3> |
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311 | <PRE> |
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312 | public static void <B>printThreadInfo</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/PrintWriter.html?is-external=true" title="class or interface in java.io">PrintWriter</A> stream, |
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313 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> title)</PRE> |
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314 | <DL> |
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315 | <DD>Print all of the thread's information and stack traces. |
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316 | <P> |
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317 | <DD><DL> |
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318 | <DT><B>Parameters:</B><DD><CODE>stream</CODE> - the stream to<DD><CODE>title</CODE> - a string title for the stack trace</DL> |
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319 | </DD> |
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320 | </DL> |
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321 | <HR> |
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322 | |
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323 | <A NAME="logThreadInfo(org.apache.commons.logging.Log, java.lang.String, long)"><!-- --></A><H3> |
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324 | logThreadInfo</H3> |
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325 | <PRE> |
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326 | public static void <B>logThreadInfo</B>(org.apache.commons.logging.Log log, |
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327 | <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> title, |
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328 | long minInterval)</PRE> |
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329 | <DL> |
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330 | <DD>Log the current thread stacks at INFO level. |
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331 | <P> |
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332 | <DD><DL> |
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333 | <DT><B>Parameters:</B><DD><CODE>log</CODE> - the logger that logs the stack trace<DD><CODE>title</CODE> - a descriptive title for the call stacks<DD><CODE>minInterval</CODE> - the minimum time from the last</DL> |
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334 | </DD> |
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335 | </DL> |
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336 | <HR> |
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337 | |
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338 | <A NAME="getClass(java.lang.Object)"><!-- --></A><A NAME="getClass(T)"><!-- --></A><H3> |
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339 | getClass</H3> |
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340 | <PRE> |
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341 | public static <T> <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><T> <B>getClass</B>(T o)</PRE> |
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342 | <DL> |
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343 | <DD>Return the correctly-typed <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang"><CODE>Class</CODE></A> of the given object. |
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344 | <P> |
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345 | <DD><DL> |
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346 | <DT><B>Parameters:</B><DD><CODE>o</CODE> - object whose correctly-typed <code>Class</code> is to be obtained |
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347 | <DT><B>Returns:</B><DD>the correctly typed <code>Class</code> of the given object.</DL> |
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348 | </DD> |
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349 | </DL> |
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350 | <HR> |
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351 | |
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352 | <A NAME="copy(org.apache.hadoop.conf.Configuration,java.lang.Object,java.lang.Object)"><!-- --></A><A NAME="copy(org.apache.hadoop.conf.Configuration, T, T)"><!-- --></A><H3> |
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353 | copy</H3> |
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354 | <PRE> |
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355 | public static <T> T <B>copy</B>(<A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A> conf, |
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356 | T src, |
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357 | T dst) |
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358 | 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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359 | <DL> |
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360 | <DD>Make a copy of the writable object using serialization to a buffer |
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361 | <P> |
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362 | <DD><DL> |
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363 | <DT><B>Parameters:</B><DD><CODE>dst</CODE> - the object to copy from<DD><CODE>src</CODE> - the object to copy into, which is destroyed |
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364 | <DT><B>Throws:</B> |
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365 | <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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366 | </DD> |
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367 | </DL> |
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368 | <HR> |
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369 | |
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370 | <A NAME="cloneWritableInto(org.apache.hadoop.io.Writable, org.apache.hadoop.io.Writable)"><!-- --></A><H3> |
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371 | cloneWritableInto</H3> |
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372 | <PRE> |
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373 | <FONT SIZE="-1"><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</A> |
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374 | </FONT>public static void <B>cloneWritableInto</B>(<A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A> dst, |
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375 | <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A> src) |
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376 | 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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377 | <DL> |
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378 | <DD><B>Deprecated.</B> |
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379 | <P> |
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380 | <DD><DL> |
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381 | |
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382 | <DT><B>Throws:</B> |
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383 | <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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