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https://issues.apache.org/jira/browse/HIVE-12640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15095826#comment-15095826
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Hive QA commented on HIVE-12640:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12781914/HIVE-12640.4.patch
{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 11 failed/errored test(s), 9973 tests
executed
*Failed tests:*
{noformat}
TestHWISessionManager - did not produce a TEST-*.xml file
TestMiniTezCliDriver-tez_bmj_schema_evolution.q-orc_merge5.q-vectorization_limit.q-and-12-more
- did not produce a TEST-*.xml file
TestMiniTezCliDriver-vector_distinct_2.q-load_dyn_part2.q-join1.q-and-12-more -
did not produce a TEST-*.xml file
TestSparkCliDriver-timestamp_lazy.q-bucketsortoptimize_insert_4.q-date_udf.q-and-12-more
- did not produce a TEST-*.xml file
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_union
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_uri_import
org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl.testMultiSessionMultipleUse
org.apache.hadoop.hive.ql.exec.spark.session.TestSparkSessionManagerImpl.testSingleSessionMultipleUse
org.apache.hive.jdbc.TestJdbcWithLocalClusterSpark.testSparkQuery
org.apache.hive.jdbc.TestJdbcWithLocalClusterSpark.testTempTable
org.apache.hive.jdbc.TestSSL.testSSLVersion
{noformat}
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6609/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6609/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-6609/
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: 11 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12781914 - PreCommit-HIVE-TRUNK-Build
> Allow StatsOptimizer to optimize the query for Constant GroupBy keys
> ---------------------------------------------------------------------
>
> Key: HIVE-12640
> URL: https://issues.apache.org/jira/browse/HIVE-12640
> Project: Hive
> Issue Type: Bug
> Reporter: Hari Sankar Sivarama Subramaniyan
> Assignee: Hari Sankar Sivarama Subramaniyan
> Attachments: HIVE-12640.1.patch, HIVE-12640.2.patch,
> HIVE-12640.3.patch, HIVE-12640.4.patch
>
>
> {code}
> hive> select count('1') from src group by '1';
> {code}
> In the above query, while performing StatsOptimizer optimization we can
> safely ignore the group by on the constant key '1' since the above query will
> return the same result as "select count('1') from src".
> Exception:
> If src is empty, according to the SQL standard,
> {code}
> select count('1') from src group by '1'
> {code}
> and
> {code}
> select count('1') from src
> {code}
> should produce 1 and 0 rows respectively.
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