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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2009/06/12 08:02:07 UTC
[jira] Resolved: (HBASE-1507) iCMS as default JVM
[ https://issues.apache.org/jira/browse/HBASE-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
stack resolved HBASE-1507.
--------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
I tested and committed this:
{code}
Index: conf/hbase-env.sh
===================================================================
--- conf/hbase-env.sh (revision 783986)
+++ conf/hbase-env.sh (working copy)
@@ -30,8 +30,10 @@
# The maximum amount of heap to use, in MB. Default is 1000.
# export HBASE_HEAPSIZE=1000
-# Extra Java runtime options. Empty by default.
-# export HBASE_OPTS=-server
+# Extra Java runtime options.
+# Below are what we set by default. For more on why as well as other possible
+# settings, see http://wiki.apache.org/hadoop/PerformanceTuning
+# export HBASE_OPTS="$HBASE_OPTS -XX:+HeapDumpOnOutOfMemoryError -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode"
# File naming hosts on which HRegionServers will run. $HBASE_HOME/conf/regionservers by default.
# export HBASE_REGIONSERVERS=${HBASE_HOME}/conf/regionservers
Index: bin/hbase
===================================================================
--- bin/hbase (revision 783986)
+++ bin/hbase (working copy)
@@ -206,7 +206,7 @@
# and are named like the following: java_pid21612.hprof. Apparently it doesn't
# 'cost' to have this flag enabled. Its a 1.6 flag only. See:
# http://blogs.sun.com/alanb/entry/outofmemoryerror_looks_a_bit_better
-HBASE_OPTS="$HBASE_OPTS -XX:+HeapDumpOnOutOfMemoryError"
+HBASE_OPTS="$HBASE_OPTS -XX:+HeapDumpOnOutOfMemoryError -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode"
HBASE_OPTS="$HBASE_OPTS -Dhbase.log.dir=$HBASE_LOG_DIR"
{code}
> iCMS as default JVM
> -------------------
>
> Key: HBASE-1507
> URL: https://issues.apache.org/jira/browse/HBASE-1507
> Project: Hadoop HBase
> Issue Type: Improvement
> Reporter: stack
> Assignee: stack
> Fix For: 0.20.0
>
>
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