[ https://issues.apache.org/jira/browse/HIVE-3106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Namit Jain updated HIVE-3106: ----------------------------- Status: Open (was: Patch Available) > Add option to make multi inserts more atomic > -------------------------------------------- > > Key: HIVE-3106 > URL: https://issues.apache.org/jira/browse/HIVE-3106 > Project: Hive > Issue Type: Improvement > Components: Query Processor > Reporter: Kevin Wilfong > Assignee: Kevin Wilfong > Attachments: HIVE-3106.1.patch.txt > > > Currently, with multi-insert queries as soon the output of one of the inserts > is ready the move task associated with that insert is run, creating the > table/partition. However, if concurrency is enabled the lock on this > table/partition is not released until the entire query finishes, which can be > much later. > This causes issues if, for example, a user is waiting for an output of the > multi-insert query which is created long before the other outputs, and > checking for it's existence using the metastore's Thrift methods > (get_table/get_partition). In which case, the user will run their query > which uses the output, and it will experience a timeout trying to acquire the > lock on the table/partition. > If all the move tasks depend on the parent's of all other move tasks, the > output creation will be much closer to atomic relieving this problem. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira