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From st...@apache.org
Subject svn commit: r1196122 - in /hbase/branches/0.92: CHANGES.txt conf/hbase-env.sh src/docbkx/performance.xml
Date Tue, 01 Nov 2011 16:47:07 GMT
Author: stack
Date: Tue Nov  1 16:47:07 2011
New Revision: 1196122

URL: http://svn.apache.org/viewvc?rev=1196122&view=rev
Log:
HBASE-4714 Don't ship w/ icms enabled by default; REDO

Modified:
    hbase/branches/0.92/CHANGES.txt
    hbase/branches/0.92/conf/hbase-env.sh
    hbase/branches/0.92/src/docbkx/performance.xml

Modified: hbase/branches/0.92/CHANGES.txt
URL: http://svn.apache.org/viewvc/hbase/branches/0.92/CHANGES.txt?rev=1196122&r1=1196121&r2=1196122&view=diff
==============================================================================
--- hbase/branches/0.92/CHANGES.txt (original)
+++ hbase/branches/0.92/CHANGES.txt Tue Nov  1 16:47:07 2011
@@ -686,6 +686,7 @@ Release 0.92.0 - Unreleased
    HBASE-2196  Support more than one slave cluster (Lars Hofhansl)
    HBASE-4435  Remove trivial 0.90 deprecated code from 0.92 and trunk
                (Jonathan Hsieh)
+   HBASE-4714  Don't ship w/ icms enabled by default
 
   NEW FEATURES
    HBASE-2001  Coprocessors: Colocate user code with regions (Mingjie Lai via

Modified: hbase/branches/0.92/conf/hbase-env.sh
URL: http://svn.apache.org/viewvc/hbase/branches/0.92/conf/hbase-env.sh?rev=1196122&r1=1196121&r2=1196122&view=diff
==============================================================================
--- hbase/branches/0.92/conf/hbase-env.sh (original)
+++ hbase/branches/0.92/conf/hbase-env.sh Tue Nov  1 16:47:07 2011
@@ -34,7 +34,7 @@
 # Below are what we set by default.  May only work with SUN JVM.
 # For more on why as well as other possible settings,
 # see http://wiki.apache.org/hadoop/PerformanceTuning
-export HBASE_OPTS="-ea -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode"
+export HBASE_OPTS="-ea -XX:+UseConcMarkSweepGC"
 
 # Uncomment below to enable java garbage collection logging in the .out file.
 # export HBASE_OPTS="$HBASE_OPTS -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps"


Modified: hbase/branches/0.92/src/docbkx/performance.xml
URL: http://svn.apache.org/viewvc/hbase/branches/0.92/src/docbkx/performance.xml?rev=1196122&r1=1196121&r2=1196122&view=diff
==============================================================================
--- hbase/branches/0.92/src/docbkx/performance.xml (original)
+++ hbase/branches/0.92/src/docbkx/performance.xml Tue Nov  1 16:47:07 2011
@@ -119,7 +119,10 @@
         must be explicitly enabled in HBase 0.90.x (Its defaulted to be on in
         0.92.x HBase). See <code>hbase.hregion.memstore.mslab.enabled</code>
         to true in your <classname>Configuration</classname>. See the cited
-        slides for background and detail.</para>
+        slides for background and detail<footnote><para>The latest jvms do better
+        regards fragmentation so make sure you are running a recent release.
+        Read down in the message,
+        <link xlink:href="http://osdir.com/ml/hotspot-gc-use/2011-11/msg00002.html">Identifying
concurrent mode failures caused by fragmentation</link>.</para></footnote>.</para>
         <para>For more information about GC logs, see <xref linkend="trouble.log.gc"
/>.
         </para>
       </section>



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