Kunal Khatua created DRILL-3021:
-----------------------------------
Summary: Exception in a JDBC session causes the client connection
to be closed
Key: DRILL-3021
URL: https://issues.apache.org/jira/browse/DRILL-3021
Project: Apache Drill
Issue Type: Bug
Components: Client - JDBC
Affects Versions: 1.0.0
Environment: RHEL 6.4
Reporter: Kunal Khatua
Assignee: Daniel Barclay (Drill)
Fix For: 1.0.0
When running a lot of queries in a session (one connection), if an exception is
encountered or if the client cancels the query (due to its internal timeout),
the following exception is thrown for subsequent queries being submitted.
Error: CONNECTION ERROR: Connection null <--> null (user client) closed
unexpectedly.
2015-05-10 18:21:33 [pip2] ERROR PipSQuawkling executeQuery - [ 6 / 10_par100 ]
CONNECTION ERROR: Connection null <--> null (user client) closed unexpectedly.
[Error Id: a57768ad-a6ab-4f83-a1c9-381d127600b3 ]
java.sql.SQLException: CONNECTION ERROR: Connection null <--> null (user
client) closed unexpectedly.
[Error Id: a57768ad-a6ab-4f83-a1c9-381d127600b3 ]
at org.apache.drill.jdbc.DrillCursor.next(DrillCursor.java:161)
at
org.apache.drill.jdbc.impl.DrillResultSetImpl.execute(DrillResultSetImpl.java:167)
at
org.apache.drill.jdbc.impl.DrillResultSetImpl.execute(DrillResultSetImpl.java:56)
at
net.hydromatic.avatica.AvaticaConnection.executeQueryInternal(AvaticaConnection.java:404)
at
net.hydromatic.avatica.AvaticaStatement.executeQueryInternal(AvaticaStatement.java:351)
at
net.hydromatic.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:78)
at
org.apache.drill.jdbc.DrillStatement.executeQuery(DrillStatement.java:81)
at PipSQuawkling.executeQuery(PipSQuawkling.java:295)
at PipSQuawkling.executeTest(PipSQuawkling.java:148)
at PipSQuawkling.run(PipSQuawkling.java:76)
Caused by: org.apache.drill.common.exceptions.UserException: CONNECTION ERROR:
Connection null <--> null (user client) closed unexpectedly.
[Error Id: a57768ad-a6ab-4f83-a1c9-381d127600b3 ]
at
org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:495)
at
org.apache.drill.exec.rpc.user.QueryResultHandler$SubmissionListener$ChannelClosedListener.operationComplete(QueryResultHandler.java:298)
at
io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
at
io.netty.util.concurrent.DefaultPromise$LateListeners.run(DefaultPromise.java:845)
at
io.netty.util.concurrent.DefaultPromise$LateListenerNotifier.run(DefaultPromise.java:873)
at
io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
at java.lang.Thread.run(Thread.java:744)
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