[jira] [Created] (HIVE-19093) some parts of the Driver runs from the "Background-Pool" in HS2

[Zoltan Haindrich (JIRA)]

Zoltan Haindrich created HIVE-19093:
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             Summary: some parts of the Driver runs from the "Background-Pool" 
in HS2
                 Key: HIVE-19093
                 URL: https://issues.apache.org/jira/browse/HIVE-19093
             Project: Hive
          Issue Type: Bug
            Reporter: Zoltan Haindrich


I was looking into perflog results; and the fact that Driver.run open / close 
happens on a different thread caught my eye - this might cause real problems 
since {{Session.get()}} will return an entirely different session in the 
aftermath...most notably there are some lock related calls like: releaseLocks

{code}
2018-04-03T08:36:53,488 DEBUG [2c81c6c1-aa6f-4609-8250-5b1a5360a8ba 
HiveServer2-Handler-Pool: Thread-16242]: log.PerfLogger 
(PerfLogger.java:PerfLogBegin(132)) - <PERFLOG method=Driver.run 
from=org.apache.hadoop.hive.ql.Driver>
2018-04-03T08:37:21,791 DEBUG [HiveServer2-Background-Pool: Thread-16247]: 
log.PerfLogger (PerfLogger.java:PerfLogEnd(172)) - </PERFLOG method=Driver.run 
start=1522744613488 end=1522744641791 duration=28303 
from=org.apache.hadoop.hive.ql.Driver>
{code}



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