Sandhya Sundaresan commented on TRAFODION-1151:

This issue has been addressed by several JIRAs that improve exception handling. 
Now the issue of hangs no longer exists. It's been fixed in Trafodion 2.2. by 
these JIRAs :





> LP Bug: 1442483 - SQL queries hang when Region Server goes down
> ---------------------------------------------------------------
>                 Key: TRAFODION-1151
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-1151
>             Project: Apache Trafodion
>          Issue Type: Bug
>          Components: sql-exe
>            Reporter: Sandhya Sundaresan
>            Assignee: Sandhya Sundaresan
>            Priority: Major
> When the RS goes down - for example killed by zookeeper due to out of memory 
> conditions, the SQL query that was executing hangs and doesn't timeout for 
> atleast an hour . 
> But subsequent SQL queries immediately detect that RS is down and retirn an 
> Hbase -705 error. 
> The timeout values in JNI calls need to be investigated to see why the hang 
> happens.

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