Jason Dere created HIVE-10704:
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Summary: Errors in Tez HashTableLoader when estimated table size
is 0
Key: HIVE-10704
URL: https://issues.apache.org/jira/browse/HIVE-10704
Project: Hive
Issue Type: Bug
Components: Query Processor
Reporter: Jason Dere
Assignee: Jason Dere
Couple of issues:
- If the table sizes in MapJoinOperator.getParentDataSizes() are 0 for all
tables, the largest small table selection is wrong and could select the large
table (which results in NPE)
- The memory estimates can either divide-by-zero, or allocate 0 memory if the
table size is 0. Try to come up with a sensible default for this.
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