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Posted to issues@hive.apache.org by "Aihua Xu (JIRA)" <ji...@apache.org> on 2015/06/09 22:39:00 UTC
[jira] [Updated] (HIVE-10972) DummyTxnManager always locks the
current database in shared mode, which is incorrect.
[ https://issues.apache.org/jira/browse/HIVE-10972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aihua Xu updated HIVE-10972:
----------------------------
Description:
In DummyTxnManager [line 163 | http://grepcode.com/file/repo1.maven.org/maven2/co.cask.cdap/hive-exec/0.13.0/org/apache/hadoop/hive/ql/lockmgr/DummyTxnManager.java#163], it always locks the current database.
That is not correct since the current database can be "db1", and the query can be "select * from db2.tb1", which will lock db1 unnecessarily.
was:
In DummyTxnManager [line 163 | http://grepcode.com/file/repo1.maven.org/maven2/co.cask.cdap/hive-exec/0.13.0/org/apache/hadoop/hive/ql/lockmgr/DummyTxnManager.java#163], it always locks the current database.
That is not correct since the current database can be "db1", and the query can be "select * from db2.tb1", which will lock db1 unnessary.
> DummyTxnManager always locks the current database in shared mode, which is incorrect.
> -------------------------------------------------------------------------------------
>
> Key: HIVE-10972
> URL: https://issues.apache.org/jira/browse/HIVE-10972
> Project: Hive
> Issue Type: Bug
> Components: Locking
> Affects Versions: 2.0.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
>
> In DummyTxnManager [line 163 | http://grepcode.com/file/repo1.maven.org/maven2/co.cask.cdap/hive-exec/0.13.0/org/apache/hadoop/hive/ql/lockmgr/DummyTxnManager.java#163], it always locks the current database.
> That is not correct since the current database can be "db1", and the query can be "select * from db2.tb1", which will lock db1 unnecessarily.
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