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Date: Thu, 17 Dec 2009 18:15:18 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-2039) G1 GC issues
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    [ https://issues.apache.org/jira/browse/HBASE-2039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12792039#action_12792039 ] 

stack commented on HBASE-2039:
------------------------------

The G1 in 1.6 fails for me in concurrent utils package with a regularity, something it doesn't do in 1.7.  I get further when I use jdk7.  Maybe try it?  I did a search on 'IGSEGV (0xb) at pc=0x00007f05f888f201, pid=19186'  It turned up a few hits.  Were you running on xen?  There is also this: http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=109

> G1 GC issues
> ------------
>
>                 Key: HBASE-2039
>                 URL: https://issues.apache.org/jira/browse/HBASE-2039
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>
> Lets keep an issue where we report on g1 issues.  Lets keep list of crashes we see.
> I filed an issue up on bug parade.  Lets see if it becomes actual bug.  Below I note version of vm and the type of crash (Internal Error (nmethod.cpp:1981), pid=32319..... Its a 'fatal error').  It happens for me after 5-10 minutes when a loading test.  Same thing each time.
> G1 in 1.6 seems plain broke; crashes on use of stuff in concurrent utils package.
> Date Created: Thu Dec 10 13:33:04 MST 2009
> ..
> Synopsis:    Running G1 GC, crashes with " Internal Error (nmethod.cpp:1981), pid=32319..."
> Description:
>  FULL PRODUCT VERSION :
> java version "1.7.0-ea"
> Java(TM) SE Runtime Environment (build 1.7.0-ea-b77)
> Java HotSpot(TM) 64-Bit Server VM (build 17.0-b05, mixed mode)
> FULL OS VERSION :
> Fedora Core release 6 (Zod)
> EXTRA RELEVANT SYSTEM CONFIGURATION :
> Here are the JVM args:
> -XX:+HeapDumpOnOutOfMemoryError -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC

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