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https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HIVE-13966:
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Comment: was deleted
(was: Interesting idea. I suppose we could check at runtime which of the two
interfaces each configured extension class implemented (either
{{TransactionalMetastoreEventListener}}, or the existing
{{DBNotificationListener}} interface) and treat it appropriately.)
> 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
> Assignee: Rahul Sharma
> 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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