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Posted to common-issues@hadoop.apache.org by "Steve Loughran (Commented) (JIRA)" <ji...@apache.org> on 2012/02/18 22:33:59 UTC
[jira] [Commented] (HADOOP-7556) TaskLogAppender does not check if
closed before flushing
[ https://issues.apache.org/jira/browse/HADOOP-7556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211101#comment-13211101 ]
Steve Loughran commented on HADOOP-7556:
----------------------------------------
There's a couple of places the patch should go.
* if you want it in trunk & 0.23, then a patch against trunk will usually work in both
* for the 1.x branch, it'll need to be against hadoop/common/branches/branch-1/
> TaskLogAppender does not check if closed before flushing
> --------------------------------------------------------
>
> Key: HADOOP-7556
> URL: https://issues.apache.org/jira/browse/HADOOP-7556
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.20.203.0
> Reporter: Aaron Morton
> Priority: Minor
> Attachments: HADDOP-7556.diff
>
>
> For background see http://groups.google.com/group/brisk-users/browse_thread/thread/3a18f4679673bea8
> http://mail-archives.apache.org/mod_mbox/hadoop-common-user/201108.mbox/%3C4E370C97-1541-4FDA-8456-1067DDDC4D77@thelastpickle.com%3E
> Cassandra is using a log4j PropertyConfigurator which is closing all existing appenders. After a task has completed the TaskLogAppender.flush() is called and it tries to flush without checking if the writer has been closed. I'll upload a patch to check if the writer is closed, and log and silently fail if it is.
> The real problem is the log4j config collision, we're looking to different log4j LoggerRepositories for that.
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