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

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.4.0
• Component/s: ambari-metrics
• Labels: newbie
• Assignee: Akira Ajisaka
• Reporter: Akira Ajisaka
• Created: 25/Mar/16 18:24
• Updated: 06/Apr/16 14:18
• Resolved: 06/Apr/16 11:55

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.

ambari-metrics-monitor

    nohup ${PYTHON} ${METRIC_MONITOR_PY_SCRIPT} "$@" > ${OUTFILE} 2>&1 &

should be

    nohup ${PYTHON} ${METRIC_MONITOR_PY_SCRIPT} "$@" >> ${OUTFILE} 2>&1 &

Issue Links

• links to: Review Board