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Posted to issues@hive.apache.org by "Hive QA (Jira)" <ji...@apache.org> on 2020/05/07 17:02:00 UTC
[jira] [Commented] (HIVE-23391) Change requested lock for ALTER
TABLE ADD COLUMN to DDL_SHARED
[ https://issues.apache.org/jira/browse/HIVE-23391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17101886#comment-17101886 ]
Hive QA commented on HIVE-23391:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/13002272/HIVE-23391.patch
{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 1 failed/errored test(s), 17241 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[explain_locks] (batchId=84)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/22185/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/22185/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-22185/
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: 1 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 13002272 - PreCommit-HIVE-Build
> Change requested lock for ALTER TABLE ADD COLUMN to DDL_SHARED
> --------------------------------------------------------------
>
> Key: HIVE-23391
> URL: https://issues.apache.org/jira/browse/HIVE-23391
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Chovan
> Assignee: Zoltan Chovan
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-23391.patch
>
>
> A long running query can block a simple add column query, as the add column will require a DDL_EXCLUSIVE lock currently. By changing this to a shared lock, this metadata only query can be executed without having to wait for the previous query to finish.
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