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From "Daniel Barclay (Drill) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-3611) Drill/client unstable in connection-closed state
Date Thu, 06 Aug 2015 03:16:05 GMT
Daniel Barclay (Drill) created DRILL-3611:
---------------------------------------------

             Summary: Drill/client unstable in connection-closed state
                 Key: DRILL-3611
                 URL: https://issues.apache.org/jira/browse/DRILL-3611
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Daniel Barclay (Drill)


When Drill and/or a client get into the state in which the client reports that the connection
is closed, the error messages are not stable.  

In the following (a series of empty queries executed about a half a second apart), notice
how sometimes the exception is a "CONNECTION ERROR: ... closed unexpectedly" exception and
sometimes it is a "SYSTEM ERROR: ChannelClosedException" exception:


{noformat}
0: jdbc:drill:> 
0: jdbc:drill:> ;
Error: CONNECTION ERROR: Connection /127.0.0.1:46726 <--> /127.0.0.1:31010 (user client)
closed unexpectedly.


[Error Id: 0848c18e-64e9-41e2-90d9-3a0ffaebc14e ] (state=,code=0)
0: jdbc:drill:> ;
Error: SYSTEM ERROR: ChannelClosedException


[Error Id: b465b0e7-55a2-4ef6-ad0e-01258468f4e7 ] (state=,code=0)
0: jdbc:drill:> ;
Error: SYSTEM ERROR: ChannelClosedException


[Error Id: 0b50a10c-42eb-47b6-bc3d-9a42afe4cd28 ] (state=,code=0)
0: jdbc:drill:> ;
Error: SYSTEM ERROR: ChannelClosedException


[Error Id: 9cd1fd96-0aed-4d06-b0ae-d48ddc70b91e ] (state=,code=0)
0: jdbc:drill:> ;
Error: CONNECTION ERROR: Connection /127.0.0.1:46726 <--> /127.0.0.1:31010 (user client)
closed unexpectedly.


[Error Id: 222a5358-6b2e-49e1-a1ec-931cacbbdbd1 ] (state=,code=0)
0: jdbc:drill:> ;
Error: SYSTEM ERROR: ChannelClosedException


[Error Id: fc589b70-dd10-4484-963a-21bc88147a0d ] (state=,code=0)
0: jdbc:drill:> ;
Error: CONNECTION ERROR: Connection /127.0.0.1:46726 <--> /127.0.0.1:31010 (user client)
closed unexpectedly.


[Error Id: 19965e75-9f2e-4a73-b1d8-29d61e6ea31a ] (state=,code=0)
0: jdbc:drill:> 
0: jdbc:drill:> 
0: jdbc:drill:> 
{noformat}




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