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Ship it! Ship It! - Aihua Xu On July 20, 2017, 10:45 p.m., Andrew Sherman wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/61010/ > ----------------------------------------------------------- > > (Updated July 20, 2017, 10:45 p.m.) > > > Review request for hive. > > > Repository: hive-git > > > Description > ------- > > Previously HIVE-16061 and HIVE-16400 changed Operation Logging to use the > Log4j2 > RoutingAppender to automatically output the log for each query into an > individual operation log file. As log4j does not know when a query is > finished > it keeps the OutputStream in the Appender open even when the query completes. > The stream holds a file descriptor and so we leak file descriptors. Note that > we > are already careful to close any streams reading from the operation log file. > To fix this we use a technique described in the comments of LOG4J2-510 which > uses reflection to close the appender. The test in TestOperationLoggingLayout > is > extended to check that the Appender is closed. > > > Diffs > ----- > > > itests/hive-unit/src/test/java/org/apache/hive/service/cli/operation/TestOperationLoggingLayout.java > 1a8337f574bb753e8c3c48a6b477b17700b05256 > ql/src/java/org/apache/hadoop/hive/ql/log/LogDivertAppender.java > e697b545984555414e27bafe92d7f22829a22687 > service/src/java/org/apache/hive/service/cli/operation/Operation.java > 8d453d5d9153c2ec86c4adc7a68bd3b5dd249743 > > > Diff: https://reviews.apache.org/r/61010/diff/1/ > > > Testing > ------- > > Hand testing to show leak has gone. > The test in TestOperationLoggingLayout is extended to check that the Appender > is closed. > > > Thanks, > > Andrew Sherman > >
