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    <title>question Re: Would it be a bad idea to add UseGCOverheadLimit for YARN NodeManager? in Archives of Support Questions (Read Only)</title>
    <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97520#M10976</link>
    <description>&lt;P&gt;12 CPUs, 64GB memory&lt;/P&gt;&lt;P&gt;mapreduce.reduce.shuffle.input.buffer.percent=0.7&lt;/P&gt;&lt;P&gt;mapreduce.reduce.memory.mb=2048&lt;/P&gt;</description>
    <pubDate>Tue, 24 Nov 2015 19:18:52 GMT</pubDate>
    <dc:creator>hosako</dc:creator>
    <dc:date>2015-11-24T19:18:52Z</dc:date>
    <item>
      <title>Would it be a bad idea to add UseGCOverheadLimit for YARN NodeManager?</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97517#M10973</link>
      <description>&lt;P&gt;Seeing the following error on HDP 2.3.0:&lt;/P&gt;&lt;PRE&gt;2015-10-19 07:33:03,353 ERROR mapred.ShuffleHandler (ShuffleHandler.java:exceptionCaught(1053)) - Shuffle error:
java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.util.Arrays.copyOf(Arrays.java:2219)
   at java.util.ArrayList.grow(ArrayList.java:242)
   at java.util.ArrayList.ensureExplicitCapacity(ArrayList.java:216)
   at java.util.ArrayList.ensureCapacityInternal(ArrayList.java:208)
   at java.util.ArrayList.add(ArrayList.java:440)
--
   at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:459)
   at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:536)
   at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:435)
   at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
   at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)&lt;/PRE&gt;&lt;PRE&gt;2015-10-21 07:05:13,532 FATAL yarn.YarnUncaughtExceptionHandler (YarnUncaughtExceptionHandler.java:uncaughtException(51)) - Thread Thread[Container Monitor,5,main] threw an Error.  Shutting down now...
java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.io.BufferedReader.&amp;lt;init&amp;gt;(BufferedReader.java:98)
   at java.io.BufferedReader.&amp;lt;init&amp;gt;(BufferedReader.java:109)
   at org.apache.hadoop.yarn.util.ProcfsBasedProcessTree.constructProcessInfo(ProcfsBasedProcessTree.java:545)
   at org.apache.hadoop.yarn.util.ProcfsBasedProcessTree.updateProcessTree(ProcfsBasedProcessTree.java:225)
   at org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl$MonitoringThread.run(ContainersMonitorImpl.java:439)&lt;/PRE&gt;&lt;P&gt;Not only try increasing "&lt;STRONG&gt;mapreduce.reduce.memory.mb&lt;/STRONG&gt;" but also can I add "-XX:-&lt;STRONG&gt;UseGCOverheadLimit&lt;/STRONG&gt;" in "&lt;STRONG&gt;mapreduce.admin.reduce.child.java.opts&lt;/STRONG&gt;"?&lt;/P&gt;&lt;P&gt;Also would it be a good idea to reduce "&lt;STRONG&gt;mapreduce.reduce.shuffle.input.buffer.percent&lt;/STRONG&gt;" ?&lt;/P&gt;</description>
      <pubDate>Tue, 24 Nov 2015 11:33:51 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97517#M10973</guid>
      <dc:creator>hosako</dc:creator>
      <dc:date>2015-11-24T11:33:51Z</dc:date>
    </item>
    <item>
      <title>Re: Would it be a bad idea to add UseGCOverheadLimit for YARN NodeManager?</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97518#M10974</link>
      <description>&lt;P&gt;&lt;A rel="user" href="https://community.cloudera.com/users/206/hosako.html" nodeid="206"&gt;@Hajime&lt;/A&gt;&lt;/P&gt;&lt;P&gt; To start with this ..Please see this &lt;A target="_blank" href="http://stackoverflow.com/questions/3383402/how-to-avoid-outofmemoryexception-when-running-hadoop"&gt;link&lt;/A&gt;&lt;/P&gt;&lt;P&gt;Also, try this &lt;A target="_blank" href="http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_installing_manually_book/content/determine-hdp-memory-config.html"&gt;Link&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&lt;A target="_blank" href="http://http//public-repo-1.hortonworks.com/HDP/tools/2.3.2.0/hdp_manual_install_rpm_helper_files-2.3.2.0.2950.tar.gz"&gt;Download&lt;/A&gt; &lt;/P&gt;</description>
      <pubDate>Tue, 24 Nov 2015 19:10:21 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97518#M10974</guid>
      <dc:creator>nsabharwal</dc:creator>
      <dc:date>2015-11-24T19:10:21Z</dc:date>
    </item>
    <item>
      <title>Re: Would it be a bad idea to add UseGCOverheadLimit for YARN NodeManager?</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97519#M10975</link>
      <description>&lt;P&gt;&lt;A rel="user" href="https://community.cloudera.com/users/206/hosako.html" nodeid="206"&gt;@Hajime&lt;/A&gt; &lt;/P&gt;&lt;P&gt;Whats the cluster config?&lt;/P&gt;&lt;P&gt;CPU, Memory &lt;/P&gt;&lt;P&gt;What is the current value of these parameters? &lt;/P&gt;&lt;P&gt;mapreduce.reduce.shuffle.input.buffer.percent &lt;/P&gt;&lt;P&gt;mapreduce.reduce.memory.mb&lt;/P&gt;</description>
      <pubDate>Tue, 24 Nov 2015 19:15:11 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97519#M10975</guid>
      <dc:creator>nsabharwal</dc:creator>
      <dc:date>2015-11-24T19:15:11Z</dc:date>
    </item>
    <item>
      <title>Re: Would it be a bad idea to add UseGCOverheadLimit for YARN NodeManager?</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97520#M10976</link>
      <description>&lt;P&gt;12 CPUs, 64GB memory&lt;/P&gt;&lt;P&gt;mapreduce.reduce.shuffle.input.buffer.percent=0.7&lt;/P&gt;&lt;P&gt;mapreduce.reduce.memory.mb=2048&lt;/P&gt;</description>
      <pubDate>Tue, 24 Nov 2015 19:18:52 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97520#M10976</guid>
      <dc:creator>hosako</dc:creator>
      <dc:date>2015-11-24T19:18:52Z</dc:date>
    </item>
    <item>
      <title>Re: Would it be a bad idea to add UseGCOverheadLimit for YARN NodeManager?</title>
      <link>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97521#M10977</link>
      <description>&lt;P&gt;&lt;A rel="user" href="https://community.cloudera.com/users/206/hosako.html" nodeid="206"&gt;@Hajime&lt;/A&gt; thanks !&lt;/P&gt;&lt;P&gt;Please try running &lt;A target="_blank" href="http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.2/bk_installing_manually_book/content/determine-hdp-memory-config.html"&gt;this&lt;/A&gt; &lt;/P&gt;</description>
      <pubDate>Tue, 24 Nov 2015 19:27:53 GMT</pubDate>
      <guid>https://community.cloudera.com/t5/Archives-of-Support-Questions/Would-it-be-a-bad-idea-to-add-UseGCOverheadLimit-for-YARN/m-p/97521#M10977</guid>
      <dc:creator>nsabharwal</dc:creator>
      <dc:date>2015-11-24T19:27:53Z</dc:date>
    </item>
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