Race condition could stop log file streaming
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Key: CHUKWA-68
URL: https://issues.apache.org/jira/browse/CHUKWA-68
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.
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