[jira] [Commented] (HBASE-10293) Master and RS GC logs can conflict when run on same host

["Enis Soztutar (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-10293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865755#comment-13865755 ] 

Enis Soztutar commented on HBASE-10293:
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I guess we can do a similar thing to the log4j logs, where we will append the username and daemon name to the gc log. 

> Master and RS GC logs can conflict when run on same host
> --------------------------------------------------------
>
>                 Key: HBASE-10293
>                 URL: https://issues.apache.org/jira/browse/HBASE-10293
>             Project: HBase
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 0.96.1.1
>            Reporter: Nick Dimiduk
>
> My issue manifests when I uncomment the line {{export SERVER_GC_OPTS=...}} in hbase-env.sh and start HBase. It's a single node in distributed mode, so both a Master and RegionServer are started on that host. Both start commands are run in the same minute, so only one gc.log-`date` file is created. `lsof` indicates two processes are writing to that file and the output of `ps` confirms they both received the same {{-Xloggc:/grid/0/var/log/hbase/gc.log-201401071515}} argument.
> Presumably, the same will happen for folks running the thrift and rest gateways on the same box (any java process itemized in the server_cmds array in bin/hbase).
> Related (the reason I discovered this issue in the first place), stopping the master process results in its gc.log being truncated.



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