Yash Datta created SPARK-7097:
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Summary: Partitioned tables should only consider referred
partitions in query during size estimation for checking against
autoBroadcastJoinThreshold
Key: SPARK-7097
URL: https://issues.apache.org/jira/browse/SPARK-7097
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 1.3.1, 1.3.0, 1.2.2, 1.2.1, 1.2.0, 1.1.1
Reporter: Yash Datta
Fix For: 1.4.0
Currently when deciding about whether to create HashJoin or ShuffleHashJoin,
the size estimation of partitioned tables involved considers the size of entire
table. This results in many query plans using shuffle hash joins , where infact
only a small number of partitions may be being referred by the actual query
(due to additional filters), and hence these could be run using Map side hash
join.
The query plan should consider the size of only the referred partitions in such
cases
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