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Hive QA commented on HIVE-7144: ------------------------------- {color:red}Overall{color}: -1 at least one tests failed Here are the results of testing the latest attachment: https://issues.apache.org/jira/secure/attachment/12651799/HIVE-7144.1.patch {color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 5653 tests executed *Failed tests:* {noformat} org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_root_dir_external_table org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_ctas {noformat} Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/550/testReport Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/550/console Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-Build-550/ Messages: {noformat} Executing org.apache.hive.ptest.execution.PrepPhase Executing org.apache.hive.ptest.execution.ExecutionPhase Executing org.apache.hive.ptest.execution.ReportingPhase Tests exited with: TestsFailedException: 2 tests failed {noformat} This message is automatically generated. ATTACHMENT ID: 12651799 > GC pressure during ORC StringDictionary writes > ----------------------------------------------- > > Key: HIVE-7144 > URL: https://issues.apache.org/jira/browse/HIVE-7144 > Project: Hive > Issue Type: Bug > Components: File Formats > Affects Versions: 0.14.0 > Environment: ORC Table ~ 12 string columns > Reporter: Gopal V > Assignee: Gopal V > Labels: ORC, Performance > Attachments: HIVE-7144.1.patch, orc-string-write.png > > > When ORC string dictionary writes data out, it suffers from bad GC > performance due to a few allocations in-loop. > !orc-string-write.png! > The conversions are as follows > StringTreeWriter::getStringValue() causes 2 conversions > LazyString -> Text (LazyString::getWritableObject) > Text -> String (LazyStringObjectInspector::getPrimitiveJavaObject) > Then StringRedBlackTree::add() does one conversion > String -> Text > This causes some GC pressure with un-necessary String and byte[] array > allocations. -- This message was sent by Atlassian JIRA (v6.2#6252)