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From "Hive QA (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-22255) Hive don't trigger Major Compaction automatically if table contains only base files
Date Tue, 09 Jun 2020 00:16:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-22255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17128727#comment-17128727
] 

Hive QA commented on HIVE-22255:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/13005168/HIVE-22255.02.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:green}SUCCESS:{color} +1 due to 17107 tests passed

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/22788/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/22788/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-22788/

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: 13005168 - PreCommit-HIVE-Build

> Hive don't trigger Major Compaction automatically if table contains only base files 
> ------------------------------------------------------------------------------------
>
>                 Key: HIVE-22255
>                 URL: https://issues.apache.org/jira/browse/HIVE-22255
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, Transactions
>    Affects Versions: 3.1.2
>         Environment: Hive-3.1.1
>            Reporter: Rajkumar Singh
>            Assignee: Rajkumar Singh
>            Priority: Major
>         Attachments: HIVE-22255.01.patch, HIVE-22255.02.patch, HIVE-22255.patch
>
>
> user may run into the issue if the table consists of all base files but no delta, then
the following condition will yield false and automatic major compaction will be skipped.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Initiator.java#L313]
>  
> Steps to Reproduce:
>  # create Acid table 
> {code:java}
> //  create table myacid(id int);
> {code}
>  # Run multiple insert table 
> {code:java}
> // insert overwrite table myacid values(1);insert overwrite table myacid values(2),(3),(4){code}
>  # DFS ls output
> {code:java}
> // dfs -ls -R /warehouse/tablespace/managed/hive/myacid;
> +----------------------------------------------------+
> |                     DFS Output                     |
> +----------------------------------------------------+
> | drwxrwx---+  - hive hadoop          0 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001
|
> | -rw-rw----+  3 hive hadoop          1 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/_orc_acid_version
|
> | -rw-rw----+  3 hive hadoop        610 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/bucket_00000
|
> | drwxrwx---+  - hive hadoop          0 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002
|
> | -rw-rw----+  3 hive hadoop          1 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/_orc_acid_version
|
> | -rw-rw----+  3 hive hadoop        633 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/bucket_00000
|
> +----------------------------------------------------+{code}
>  
> you will see that Major compaction will not be trigger until you run alter table compact
MAJOR.



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