Prasanth J created HIVE-6797:
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Summary: Add protection against divide by zero in stats annotation
Key: HIVE-6797
URL: https://issues.apache.org/jira/browse/HIVE-6797
Project: Hive
Issue Type: Sub-task
Affects Versions: 0.13.0
Reporter: Prasanth J
Assignee: Prasanth J
Fix For: 0.13.0
In stats annotation, the denominator computation in join operator is not
protected for divide by zero exception. It will be an issue when NDV (count
distinct) updated by updateStats() becomes 0. This patch adds protection in
updateStats() method to prevent divide-by-zero in downstream operators.
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