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https://issues.apache.org/jira/browse/HIVE-25331?focusedWorklogId=622858&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-622858
]
ASF GitHub Bot logged work on HIVE-25331:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Jul/21 05:44
Start Date: 15/Jul/21 05:44
Worklog Time Spent: 10m
Work Description: ujc714 opened a new pull request #2478:
URL: https://github.com/apache/hive/pull/2478
### What changes were proposed in this pull request?
Use a default directory for MANAGEDLOCATION if it's not assigned in CREATE
DATABASE query.
### Why are the changes needed?
HMS doesn't create MANAGEDLOCATION directory if it's NULL. If we run a CTAS
query immediately after the CREATE DATABASE query and the staging directory is
not under the MANAGEDLOCATION directory, the CTAS query will fail in MOVE task.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
mvn test -Dtest=TestMiniTezCliDriver -Dqfile=create_database.q
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Issue Time Tracking
-------------------
Worklog Id: (was: 622858)
Remaining Estimate: 0h
Time Spent: 10m
> Create database query doesn't create MANAGEDLOCATION directory
> --------------------------------------------------------------
>
> Key: HIVE-25331
> URL: https://issues.apache.org/jira/browse/HIVE-25331
> Project: Hive
> Issue Type: Bug
> Reporter: Robbie Zhang
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> If we don't assign MANAGEDLOCATION in a "create database" query, the
> MANAGEDLOCATION will be NULL so HMS doesn't create the directory. In this
> case, a CTAS query immediately after the CREATE DATABASE query might fail in
> MOVE task due to "destination's parent does not exist". I can use the
> following script to reproduce this issue:
> {code:java}
> set hive.support.concurrency=true;
> set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager;
> create database testdb location '/tmp/testdb.db';
> create table testdb.test as select 1;
> {code}
> If the staging directory is under the MANAGEDLOCATION directory, the CTAS
> query is fine as the MANAGEDLOCATION directory is created while creating the
> staging directory. Since we set LOCATION to a default directory when LOCATION
> is not assigned in the CREATE DATABASE query, I believe it's worth to set
> MANAGEDLOCATION to a default directory, too.
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