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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-18079) Statistics: Allow HyperLogLog to be merged to the lowest-common-denominator bit-size
Date Tue, 05 Dec 2017 18:27:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-18079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278999#comment-16278999
] 

Hive QA commented on HIVE-18079:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12900572/HIVE-18079.2.patch

{color:green}SUCCESS:{color} +1 due to 2 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 14 failed/errored test(s), 11537 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[auto_sortmerge_join_2] (batchId=48)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[dynamic_semijoin_user_level]
(batchId=150)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[explainuser_2] (batchId=150)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[llapdecider] (batchId=147)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[explainanalyze_2] (batchId=166)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[hybridgrace_hashjoin_2]
(batchId=157)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[insert_values_orig_table_use_metadata]
(batchId=165)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[mergejoin] (batchId=165)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[semijoin_hint] (batchId=157)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[sysdb] (batchId=160)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[tez_smb_main] (batchId=157)
org.apache.hadoop.hive.ql.parse.TestReplicationScenarios.testConstraints (batchId=227)
org.apache.hive.service.cli.TestEmbeddedThriftBinaryCLIService.testExecuteStatementAsync (batchId=231)
org.apache.hive.service.cli.TestEmbeddedThriftBinaryCLIService.testExecuteStatementParallel
(batchId=231)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/8112/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/8112/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-8112/

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: 14 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12900572 - PreCommit-HIVE-Build

> Statistics: Allow HyperLogLog to be merged to the lowest-common-denominator bit-size
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-18079
>                 URL: https://issues.apache.org/jira/browse/HIVE-18079
>             Project: Hive
>          Issue Type: Improvement
>          Components: Standalone Metastore, Statistics
>    Affects Versions: 3.0.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>         Attachments: HIVE-18079.1.patch, HIVE-18079.2.patch, HIVE-18079.3.patch
>
>
> HyperLogLog can merge a 14 bit HLL into a 10 bit HLL bitset, because of its mathematical
hash distribution & construction.
> Allow the squashing of a 14 bit HLL -> 10 bit HLL without needing a second scan over
the data-set.



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