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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-21485) Hive desc operation takes more than 100 seconds after upgrading from Hive 1.2.1 to 2.3.4
Date Thu, 28 Mar 2019 12:04:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-21485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16803865#comment-16803865
] 

Hive QA commented on HIVE-21485:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12963994/HIVE-21485.patch

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

{color:green}SUCCESS:{color} +1 due to 15877 tests passed

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/16733/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/16733/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-16733/

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
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12963994 - PreCommit-HIVE-Build

> Hive desc operation takes more than 100 seconds after upgrading from Hive 1.2.1 to 2.3.4
> ----------------------------------------------------------------------------------------
>
>                 Key: HIVE-21485
>                 URL: https://issues.apache.org/jira/browse/HIVE-21485
>             Project: Hive
>          Issue Type: Bug
>          Components: CLI, Hive
>    Affects Versions: 2.3.4
>            Reporter: Qingxin Wu
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-21485.patch
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> Hive desc [formatted|extended] operation cost more than 100 seconds after upgrading from
Hive 1.2.1 to 2.3.4. This is mainly caused by showing stats for partitioned tables which was
introduced by HIVE-16098 when the partitioned tables have a large amount of partitions. In
our case, the number of partition is 187221.
> {code:java}
> hive> desc bus.kafka_data;
> OK
> id            	        string
> ...
> d                  	    map<string,string>
> stat_date           	string
> log_id              	string
> # Partition Information
> # col_name            	data_type           	comment
> stat_date           	string
> log_id              	string
> Time taken: 115.342 seconds, Fetched: 42 row(s)
> {code}
> same operation executed in hive-1.2.1 and only cost 2 seconds.
> {code:java}
> hive> desc bus.kafka_data;
> OK
> id            	        string
> ...
> d                  	    map<string,string>
> stat_date           	string
> log_id              	string
> # Partition Information
> # col_name            	data_type           	comment
> stat_date           	string
> log_id              	string
> Time taken: 2.037 seconds, Fetched: 42 row(s)
> {code}



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