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From "Akira AJISAKA (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-15588) Use ">>" instead of ">" to write ambari-metrics-collector.out
Date Mon, 28 Mar 2016 05:07:25 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-15588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Akira AJISAKA updated AMBARI-15588:
-----------------------------------
    Attachment: AMBARI-15588.01.patch

> Use ">>" instead of ">" to write ambari-metrics-collector.out
> -------------------------------------------------------------
>
>                 Key: AMBARI-15588
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15588
>             Project: Ambari
>          Issue Type: Improvement
>          Components: ambari-metrics
>            Reporter: Akira AJISAKA
>              Labels: newbie
>         Attachments: AMBARI-15588.01.patch
>
>
> If we want to rotate ambari-metrics-collector.out by logrotate (using copytruncate option),
we need to use ">>" instead of ">" not to keep the file offset to write. If the offset
is kept, null characters are padded in the new file.
> {code:title=ambari-metrics-collector}
>  "-Dproc_${DAEMON_NAME}" "${CLASS}" "$@" > $OUTFILE 2>&1 &
> {code}
> should be 
> {code}
>  "-Dproc_${DAEMON_NAME}" "${CLASS}" "$@" >> $OUTFILE 2>&1 &
> {code}



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