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https://issues.apache.org/jira/browse/HIVE-19326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477106#comment-16477106
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Hive QA commented on HIVE-19326:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12923516/HIVE-19326.05.patch
{color:green}SUCCESS:{color} +1 due to 3 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 9 failed/errored test(s), 14400 tests
executed
*Failed tests:*
{noformat}
TestAccumuloCliDriver - did not produce a TEST-*.xml file (likely timed out)
(batchId=245)
TestDummy - did not produce a TEST-*.xml file (likely timed out) (batchId=245)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[union_stats] (batchId=24)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[varchar_2] (batchId=68)
org.apache.hadoop.hive.cli.TestHBaseCliDriver.testCliDriver[hbase_single_sourced_multi_insert]
(batchId=103)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[explainuser_4]
(batchId=164)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[union_fast_stats]
(batchId=167)
org.apache.hadoop.hive.metastore.client.TestRuntimeStats.testCleanup[Embedded]
(batchId=209)
org.apache.hive.jdbc.TestMultiSessionsHS2WithLocalClusterSpark.testSparkQuery
(batchId=243)
{noformat}
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/10984/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/10984/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-10984/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 9 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12923516 - PreCommit-HIVE-Build
> stats auto gather: incorrect aggregation during UNION queries (may lead to
> incorrect results)
> ---------------------------------------------------------------------------------------------
>
> Key: HIVE-19326
> URL: https://issues.apache.org/jira/browse/HIVE-19326
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Reporter: Sergey Shelukhin
> Assignee: Zoltan Haindrich
> Priority: Critical
> Attachments: HIVE-19326.01wip01.patch, HIVE-19326.02.patch,
> HIVE-19326.03.patch, HIVE-19326.04.patch, HIVE-19326.05.patch
>
>
> Found when investigating the results change after converting tables to MM,
> turns out the MM result is correct but the current one is not.
> The test ends like so:
> {noformat}
> desc formatted small_alltypesorc_a;
> ANALYZE TABLE small_alltypesorc_a COMPUTE STATISTICS;
> desc formatted small_alltypesorc_a;
> insert into table small_alltypesorc_a select * from small_alltypesorc1a;
> desc formatted small_alltypesorc_a;
> {noformat}
> The results from the descs in the golden file are:
> {noformat}
> COLUMN_STATS_ACCURATE {\"BASIC_STATS\":\"true\"}
> numFiles 1
> numRows 5
> ...
> COLUMN_STATS_ACCURATE {\"BASIC_STATS\":\"true\"}
> numFiles 1
> numRows 15
> ...
> COLUMN_STATS_ACCURATE {\"BASIC_STATS\":\"true\"}
> numFiles 2
> numRows 20
> {noformat}
> Note the result change after analyze - the original nomRows is inaccurate,
> but BASIC_STATS is set to true.
> I am assuming with metadata only optimization this can produce incorrect
> results.
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