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Edward Capriolo commented on HIVE-1511: --------------------------------------- Here is the little funny corner case of this ticket. By adding Kryo to the distributed cache needed to launch jobs we ARE slowing down queries. The better serialization helps more for the very large queries, but for the standard case we may be adding time. > Hive plan serialization is slow > ------------------------------- > > Key: HIVE-1511 > URL: https://issues.apache.org/jira/browse/HIVE-1511 > Project: Hive > Issue Type: Improvement > Affects Versions: 0.7.0 > Reporter: Ning Zhang > Assignee: Mohammad Kamrul Islam > Attachments: HIVE-1511.patch, HIVE-1511-wip2.patch, > HIVE-1511-wip3.patch, HIVE-1511-wip.patch > > > As reported by Edward Capriolo: > For reference I did this as a test case.... > SELECT * FROM src where > key=0 OR key=0 OR key=0 OR key=0 OR key=0 OR key=0 OR key=0 OR key=0 > OR key=0 OR key=0 OR key=0 OR > key=0 OR key=0 OR key=0 OR key=0 OR key=0 OR key=0 OR key=0 OR key=0 > OR key=0 OR key=0 OR key=0 OR > ...(100 more of these) > No OOM but I gave up after the test case did not go anywhere for about > 2 minutes. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira