Zoltan Haindrich created HIVE-20504:
---------------------------------------
Summary: Give simple MJ bigger priority than bucketized ones
Key: HIVE-20504
URL: https://issues.apache.org/jira/browse/HIVE-20504
Project: Hive
Issue Type: Improvement
Components: Statistics
Reporter: Zoltan Haindrich
Assignee: Zoltan Haindrich
from the code it seems "standard" mapjoin is one of the last one tried; in case
the table estimated to be bucketed in to 2 - but it's small ; Hive willl do a
bucketmapjoin or dphj...even thru a simple mapjoin could have been an
alternative...
https://github.com/apache/hive/blob/154ca3e3b5eb78cd49a4b3650c750ca731fba7da/ql/src/java/org/apache/hadoop/hive/ql/optimizer/ConvertJoinMapJoin.java#L157
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
