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Posted to dev@hive.apache.org by "Nachiket Vaidya (JIRA)" <ji...@apache.org> on 2016/06/07 22:23:21 UTC
[jira] [Created] (HIVE-13966) DbNotificationListener: can loose DDL
operation notifications
Nachiket Vaidya created HIVE-13966:
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Summary: DbNotificationListener: can loose DDL operation notifications
Key: HIVE-13966
URL: https://issues.apache.org/jira/browse/HIVE-13966
Project: Hive
Issue Type: Bug
Components: HCatalog
Reporter: Nachiket Vaidya
Priority: Critical
The code for each API in HiveMetaStore.java is like this:
1. openTransaction()
2. -- operation--
3. commit() or rollback() based on result of the operation.
4. add entry to notification log (unconditionally)
If the operation is failed (in step 2), we still add entry to notification log. Found this issue in testing.
It is still ok as this is the case of false positive.
If the operation is successful and adding to notification log failed, the user will get an MetaException. It will not rollback the operation, as it is already committed. We need to handle this case so that we will not have false negatives.
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