[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15373197#comment-15373197 ]
Rahul Sharma commented on HIVE-13966: ------------------------------------- Working on adding test cases, looks a bit tricky as we need to prevent the entry to notification log to check the complete metastore operation rollback. Will update the new patch soon. > 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 > Attachments: HIVE-13966.1.patch > > > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)