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From Ross Guth <>
Subject Hash table in map join - Hive
Date Fri, 24 Jun 2016 22:06:45 GMT
1. Is there a way to check the size of the hash table created during map
side join in Hive/Tez?
2. Is the hash table (small table's), created for the entire table or only
for the selected and join key columns?
3. The hash table (created in map side join) spills to disk, if it does not
fit in memory Is there a parameter in hive/tez to specify the percentage of
the hash file which can spill?


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