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Hive QA commented on HIVE-11531: -------------------------------- Here are the results of testing the latest attachment: https://issues.apache.org/jira/secure/attachment/12775946/HIVE-11531.06.patch {color:green}SUCCESS:{color} +1 due to 4 test(s) being added or modified. {color:red}ERROR:{color} -1 due to 13 failed/errored test(s), 9901 tests executed *Failed tests:* {noformat} TestHWISessionManager - did not produce a TEST-*.xml file org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_cbo_udf_max org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_offset_limit org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_offset_limit_global_optimizer org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_offset_limit_ppd_optimizer org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_vectorization_offset_limit org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver_dynamic_partition_pruning org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver_vectorized_dynamic_partition_pruning org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_mergejoin org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_uri_import org.apache.hadoop.hive.metastore.TestHiveMetaStorePartitionSpecs.testGetPartitionSpecs_WithAndWithoutPartitionGrouping org.apache.hive.jdbc.TestSSL.testSSLVersion org.apache.tez.dag.app.rm.TestLlapTaskSchedulerService.testSimpleLocalAllocation {noformat} Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6261/testReport Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6261/console Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-6261/ Messages: {noformat} Executing org.apache.hive.ptest.execution.TestCheckPhase 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: 13 tests failed {noformat} This message is automatically generated. ATTACHMENT ID: 12775946 - PreCommit-HIVE-TRUNK-Build > Add mysql-style LIMIT support to Hive, or improve ROW_NUMBER performance-wise > ----------------------------------------------------------------------------- > > Key: HIVE-11531 > URL: https://issues.apache.org/jira/browse/HIVE-11531 > Project: Hive > Issue Type: Improvement > Components: CBO > Reporter: Sergey Shelukhin > Assignee: Hui Zheng > Attachments: HIVE-11531.02.patch, HIVE-11531.03.patch, > HIVE-11531.04.patch, HIVE-11531.05.patch, HIVE-11531.06.patch, > HIVE-11531.WIP.1.patch, HIVE-11531.WIP.2.patch, HIVE-11531.patch > > > For any UIs that involve pagination, it is useful to issue queries in the > form SELECT ... LIMIT X,Y where X,Y are coordinates inside the result to be > paginated (which can be extremely large by itself). At present, ROW_NUMBER > can be used to achieve this effect, but optimizations for LIMIT such as TopN > in ReduceSink do not apply to ROW_NUMBER. We can add first class support for > "skip" to existing limit, or improve ROW_NUMBER for better performance -- This message was sent by Atlassian JIRA (v6.3.4#6332)