chukwa-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Eric Yang (JIRA)" <>
Subject [jira] Commented: (CHUKWA-68) Race condition could stop log file streaming
Date Fri, 03 Apr 2009 21:33:13 GMT


Eric Yang commented on CHUKWA-68:

This is a real case on kryptonite red name node.  The name node log file isn't streamed by
the agent due to the race condition.

> Race condition could stop log file streaming
> --------------------------------------------
>                 Key: CHUKWA-68
>                 URL:
>             Project: Hadoop Chukwa
>          Issue Type: Bug
>         Environment: Redhat 5.1, Java 6
>            Reporter: Eric Yang
>            Priority: Blocker
> When log file is actively writing with log4j appender, and fileTailingAdaptor is behind.
 There is a possibility that restart the java program might stop log file streaming.
> Here is an example of what could go wrong:
> 04:01 Shutdown Name Node.
> 04:01 Terminator Thread kick in and streaming the remaining log.
> 04:02 Name Node Started up
> 04:03 Register of namenode log file failed because it is already streaming.
> 04:20 Terminator Thread finished the log file, unregister name node log for streaming.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message