[jira] [Updated] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma updated HIVE-13966: Attachment: HIVE-13966.pdf > 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, HIVE-13966.2.patch, HIVE-13966.pdf > > > 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)
[jira] [Commented] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15427013#comment-15427013 ] Rahul Sharma commented on HIVE-13966: - [~sushanth], Did you get a chance to look at the patch? > 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, HIVE-13966.2.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)
[jira] [Commented] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15379947#comment-15379947 ] Rahul Sharma commented on HIVE-13966: - Hi [~sushanth], Can you take a look at the patch. -Thanks > 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, HIVE-13966.2.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)
[jira] [Updated] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma updated HIVE-13966: Attachment: HIVE-13966.2.patch > 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, HIVE-13966.2.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)
[jira] [Updated] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma updated HIVE-13966: Status: Patch Available (was: In Progress) > 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, HIVE-13966.2.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)
[jira] [Updated] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma updated HIVE-13966: Status: In Progress (was: Patch Available) > 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)
[jira] [Commented] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=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)
[jira] [Updated] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma updated HIVE-13966: Attachment: HIVE-13966.1.patch Attaching the initial patch. > 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)
[jira] [Updated] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma updated HIVE-13966: Status: Patch Available (was: In Progress) > 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)
[jira] [Work started] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Work on HIVE-13966 started by Rahul Sharma. --- > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Comment Edited] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15348861#comment-15348861 ] Rahul Sharma edited comment on HIVE-13966 at 6/24/16 11:25 PM: --- Repost: Can a listener be registered with multiple properties, for ex: can DBNotification listener be part of hive.metastore.synchronous.event.listeners(proposed above) and hive.metastore.event.listeners. Should this be a check from the code to prevent duplicated entries in the notification log or this be checked by the user ? was (Author: rahul9269): Repost: Can a listener be registered with multiple properties, for ex: can DBNotification listener be part of hive.metastore.synchronous.event.listeners(proposed above) and hive.metastore.event.listeners. Should this be a check from the code to prevent duplicated entries in the notification log or this be checked by the user/CM ? > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15348861#comment-15348861 ] Rahul Sharma commented on HIVE-13966: - Repost: Can a listener be registered with multiple properties, for ex: can DBNotification listener be part of hive.metastore.synchronous.event.listeners(proposed above) and hive.metastore.event.listeners. Should this be a check from the code to prevent duplicated entries in the notification log or this be checked by the user/CM ? > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15346785#comment-15346785 ] Rahul Sharma commented on HIVE-13966: - +1 for having TransactionalMetastoreEventListener, which also seems in accordance within the code with the other listerners such as initlisterners , prelisteners , "transactionlisteners" , listeners and endfunctionlisteners. The second approach doesn't seems right as it results in changing the existing listeners code who want to be synchronous. > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15342362#comment-15342362 ] Rahul Sharma commented on HIVE-13966: - Can a listener be registered with multiple properties, for ex: can DBNotification listener be part of hive.metastore.synchronous.event.listeners(proposed above) and hive.metastore.event.listeners . If yes, should there be a check to not add the notification log again? > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Assigned] (HIVE-13966) DbNotificationListener: can loose DDL operation notifications
[ https://issues.apache.org/jira/browse/HIVE-13966?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rahul Sharma reassigned HIVE-13966: --- Assignee: Rahul Sharma > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
