Daniel Barclay (Drill) created DRILL-3611:
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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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