Hi, There:
does anybody know of a good combination of centos version and jdk version
that works stably ? I am using centos version
Linux 2.6.18-194.8.1.el5.centos.plus #1 SMP Wed Jul 7 11:45:38 EDT 2010
x86_64 x86_64 x86_64 GNU/Linux
jdk version
Java(TM) SE Runtime Environment (build 1.6.0_17-b04)
Java HotSpot(TM) 64-Bit Server VM (build 14.3-b01, mixed mode)
and run the namenode with the following jvm config
-Xmx1000m -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
-XX:+DisableExplicitGC -XX:+HeapDumpOnOutOfMemoryError -XX:+UseCompressedOops
-XX:+DoEscapeAnalysis -XX:+AggressiveOpts -Xmx2G
but it crashed silently after 16 hours.
I used jdk
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
with the same jvm config, and the namenode crashed in about 1 week. I searched
internet and people say 1.6.0_18 is not good.
but does anybody can recommend a good combination of jdk and os version that
can run stably ?
This crashing problem doesn't happen with a small cluster of 4 datanodes. but
it happens with a cluster of 17 datanodes.
Jimmy.
