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https://issues.apache.org/jira/browse/HIVE-13954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15316994#comment-15316994
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Prasanth Jayachandran commented on HIVE-13954:
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This writes to $TMPDIR/parquet-%u.log where %u is unique number to resolve
conflicts. The default location for hive log is $TMPDIR/$USER/hive.log. We
cannot use the same file for logging because with java file logging we cannot
access the user name in properties file, hence the above pattern for parquet
log file.
> Parquet logs should go to STDERR
> --------------------------------
>
> Key: HIVE-13954
> URL: https://issues.apache.org/jira/browse/HIVE-13954
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-13954.1.patch
>
>
> Parquet uses java util logging. When java logging is not configured using
> default logging.properties file, parquet's default fallback handler writes to
> STDOUT at INFO level. Hive writes all logging to STDERR and writes only the
> query output to STDOUT. Writing logs to STDOUT may cause issues when
> comparing query results.
> If we provide default logging.properties for parquet then we can configure it
> to write to file or stderr.
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