[jira] [Created] (HIVE-27657) Change hive.fetch.task.conversion.threshold default value

[Mayank Kunwar (Jira)]

Mayank Kunwar created HIVE-27657:
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             Summary: Change hive.fetch.task.conversion.threshold default value
                 Key: HIVE-27657
                 URL: https://issues.apache.org/jira/browse/HIVE-27657
             Project: Hive
          Issue Type: Bug
            Reporter: Mayank Kunwar


With the introduction of [fetch task 
caching|https://github.com/apache/hive/blob/d0a06239b09396d1b7a6414d85011f9a20f8486a/common/src/java/org/apache/hadoop/hive/conf/HiveConf.java#L3532-L3535],
 HS2 may quickly run out of memory if there are multiple parallel queries with 
fetch task.

We should be reducing the default value for 
hive.fetch.task.conversion.threshold to 209715200 (200M) from current 
1073741824 (1G)



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