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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8839) Support "alter table .. add/replace columns cascade"
Date Sat, 15 Nov 2014 04:32:33 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14213347#comment-14213347
] 

Hive QA commented on HIVE-8839:
-------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12681617/HIVE-8839.2.patch

{color:red}ERROR:{color} -1 due to 1 failed/errored test(s), 6689 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_udaf_histogram_numeric
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/1799/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/1799/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-1799/

Messages:
{noformat}
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: 1 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12681617 - PreCommit-HIVE-TRUNK-Build

> Support "alter table .. add/replace columns cascade"
> ----------------------------------------------------
>
>                 Key: HIVE-8839
>                 URL: https://issues.apache.org/jira/browse/HIVE-8839
>             Project: Hive
>          Issue Type: Improvement
>          Components: SQL
>         Environment: 
>            Reporter: Chaoyu Tang
>            Assignee: Chaoyu Tang
>              Labels: TODOC15
>             Fix For: 0.15.0
>
>         Attachments: HIVE-8839.1.patch, HIVE-8839.2.patch, HIVE-8839.patch
>
>
> We often run into some issues like HIVE-6131which is due to inconsistent column descriptors
between table and partitions after alter table. HIVE-8441/HIVE-7971 provided the flexibility
to alter table at partition level. But most cases we have need change the table and partitions
at same time. In addition, "alter table" is usually required prior to "alter table partition
.." since querying table partition data is also through table. Instead of do that in two steps,
here we provide a convenient ddl like "alter table ... cascade" to cascade table changes to
partitions as well. The changes are only limited and applicable to add/replace columns and
change column name, datatype, position and comment.



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