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From "Travis Crawford (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-6746) hadoop-daemon.sh does not append to log files
Date Wed, 11 May 2011 18:28:49 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Travis Crawford updated HADOOP-6746:
------------------------------------

    Resolution: Won't Fix
        Status: Resolved  (was: Patch Available)

> hadoop-daemon.sh does not append to log files
> ---------------------------------------------
>
>                 Key: HADOOP-6746
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6746
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Travis Crawford
>         Attachments: HADOOP-6746.patch
>
>
> Looking in hadoop-daemon.sh we see the start command redirects logs to the log file by
creating a new file. It does not append to the log.
> nohup nice -n $HADOOP_NICENESS "$HADOOP_HOME"/bin/hadoop --config $HADOOP_CONF_DIR $command
"$@" > "$log" 2>&1 < /dev/null &
> I believe output should be appended to the log file so logrotate copytruncate works.
Currently a large log file cannot be truncated without restarting the running service, which
causes issues in production environments.
> The improved line would be exactly the same, except use >> to open the log file
in append mode.
> nohup nice -n $HADOOP_NICENESS "$HADOOP_HOME"/bin/hadoop --config $HADOOP_CONF_DIR $command
"$@" >> "$log" 2>&1 < /dev/null &

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