[ https://issues.apache.org/jira/browse/STORM-3292?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated STORM-3292: ---------------------------------- Labels: pull-request-available (was: ) > Trident HiveState must flush writers when the batch commits > ----------------------------------------------------------- > > Key: STORM-3292 > URL: https://issues.apache.org/jira/browse/STORM-3292 > Project: Apache Storm > Issue Type: Improvement > Reporter: Arun Mahadevan > Priority: Major > Labels: pull-request-available > > For trident the hive writer is flushed only after it hits the batch size. > see - > https://github.com/apache/storm/blob/master/external/storm-hive/src/main/java/org/apache/storm/hive/trident/HiveState.java#L108 > Trident HiveState does not flush during the batch commit and it appears to be > an oversight. Without this trident state cannot guarantee at-least once. > (E.g. if the transaction is open but trident moves to the next txid and later > fails the data in the open transaction is lost). > So I think for at-least once, the HiveState must flush all the writers > irrespective of the batch sizes when trident invokes the "commit(txid)" . -- This message was sent by Atlassian JIRA (v7.6.3#76005)