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https://issues.apache.org/jira/browse/IMPALA-3036?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-3036:
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Priority: Trivial (was: Minor)
> Fix issue with processes deleting each other's log files
> --------------------------------------------------------
>
> Key: IMPALA-3036
> URL: https://issues.apache.org/jira/browse/IMPALA-3036
> Project: IMPALA
> Issue Type: Improvement
> Components: Infrastructure
> Affects Versions: Impala 2.2.4
> Reporter: Thomas Tauber-Marshall
> Priority: Trivial
>
> Impala's log rotation depends on reading the log directory to determine which
> files to delete. As a result, if you have multiple impalad processes running
> on the same machine, they can end up deleting each other's log files since
> there is currently no way to distinguish between logs generated by different
> processes.
> This could be fixed by adding a per-process prefix to the log file names, or
> by having each process save its logs in different directories.
> This is low priority as running multiple impalads on the same machine is not
> officially supported, but the issue comes up in testing when simulating a
> cluster on a single machine, and fixing it would lead to more consistent
> behaviour.
> The fix also needs to keep in mind that Cloudera Manager relies on the names
> of the files to tail them.
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