Xuefu Zhang created HIVE-9103:
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Summary: Support backup task for join related optimization [Spark
Branch]
Key: HIVE-9103
URL: https://issues.apache.org/jira/browse/HIVE-9103
Project: Hive
Issue Type: Sub-task
Components: Spark
Reporter: Xuefu Zhang
In MR, backup task can be executed if the original task, which probably
contains certain (join) optimization fails. This JIRA is to track this topic
for Spark. We need to determine if we need this and implement if necessary.
This is a followup of HIVE-9099.
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