Prasanth Jayachandran created HIVE-16546:
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             Summary: LLAP: Fail map join tasks if hash table memory exceeds 
threshold
                 Key: HIVE-16546
                 URL: https://issues.apache.org/jira/browse/HIVE-16546
             Project: Hive
          Issue Type: Bug
          Components: llap
    Affects Versions: 3.0.0
            Reporter: Prasanth Jayachandran
            Assignee: Prasanth Jayachandran


When map join task is running in llap, it can potentially use lot more memory 
than its limit which could be memory per executor or no conditional task size. 
If it uses more memory, it can adversely affect other query performance or it 
can even bring down the daemon. In such cases, it is better to fail the query 
than to bring down the daemon. 



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