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Posted to issues@ambari.apache.org by "Akira AJISAKA (JIRA)" <ji...@apache.org> on 2016/03/28 07:21:25 UTC

[jira] [Updated] (AMBARI-15588) Use ">>" instead of ">" to write ambari-metrics-monitor.out

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

Akira AJISAKA updated AMBARI-15588:
-----------------------------------
    Description: 
If we want to rotate ambari-metrics-monitor.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-monitor}
    nohup ${PYTHON} ${METRIC_MONITOR_PY_SCRIPT} "$@" > ${OUTFILE} 2>&1 &
{code}
should be 
{code}
    nohup ${PYTHON} ${METRIC_MONITOR_PY_SCRIPT} "$@" >> ${OUTFILE} 2>&1 &
{code}

  was:
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}

        Summary: Use ">>" instead of ">" to write ambari-metrics-monitor.out  (was: Use ">>" instead of ">" to write ambari-metrics-collector.out)

s/collector/monitor/g

> Use ">>" instead of ">" to write ambari-metrics-monitor.out
> -----------------------------------------------------------
>
>                 Key: AMBARI-15588
>                 URL: https://issues.apache.org/jira/browse/AMBARI-15588
>             Project: Ambari
>          Issue Type: Improvement
>          Components: ambari-metrics
>            Reporter: Akira AJISAKA
>            Assignee: Akira AJISAKA
>              Labels: newbie
>         Attachments: AMBARI-15588.01.patch
>
>
> If we want to rotate ambari-metrics-monitor.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-monitor}
>     nohup ${PYTHON} ${METRIC_MONITOR_PY_SCRIPT} "$@" > ${OUTFILE} 2>&1 &
> {code}
> should be 
> {code}
>     nohup ${PYTHON} ${METRIC_MONITOR_PY_SCRIPT} "$@" >> ${OUTFILE} 2>&1 &
> {code}



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