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https://issues.apache.org/jira/browse/HIVE-25970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stamatis Zampetakis resolved HIVE-25970.
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Fix Version/s: 4.0.0
Resolution: Fixed
Fixed in
https://github.com/apache/hive/commit/d3cd596aa15ebedd58f99628d43a03eb2f5f3909.
Thanks for the review [~kgyrtkirk]!
> Missing messages in HS2 operation logs
> --------------------------------------
>
> Key: HIVE-25970
> URL: https://issues.apache.org/jira/browse/HIVE-25970
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Reporter: Stamatis Zampetakis
> Assignee: Stamatis Zampetakis
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> After HIVE-22753 & HIVE-24590, with some unlucky timing of events, operation
> log messages can get lost and never appear in the appropriate files.
> The changes in HIVE-22753 will prevent a {{HushableRandomAccessFileAppender}}
> from being created if the latter refers to a file that has been closed in the
> last second. Preventing the creation of the appender also means that the
> message which triggered the creation will be lost forever. In fact any
> message (for the same query) that comes in the interval of 1 second will be
> lost forever.
> Before HIVE-24590 the appender/file was closed only once (explicitly by HS2)
> and thus the problem may be very hard to notice in practice. However, with
> the arrival of HIVE-24590 appenders may close much more frequently (and not
> via HS2) making the issue reproducible rather easily. It suffices to set
> _hive.server2.operation.log.purgePolicy.timeToLive_ property very low and
> check the operation logs.
> The problem was discovered by investigating some intermittent failures in
> operation logging tests (e.g., TestOperationLoggingAPIWithTez).
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