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https://issues.apache.org/jira/browse/DRILL-4708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15866202#comment-15866202
]
Srihari commented on DRILL-4708:
--------------------------------
Same problem here. This makes Apache drill very unstable and not fit for
production. If it cant handle the resources allocated to it then one guy has to
sit and monitor it continuously. :(
Request Apache team to fix it asap. Thanks.
> connection closed unexpectedly
> ------------------------------
>
> Key: DRILL-4708
> URL: https://issues.apache.org/jira/browse/DRILL-4708
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - RPC
> Affects Versions: 1.7.0
> Reporter: Chun Chang
>
> Running DRILL functional automation, we often see query failed randomly due
> to the following unexpected connection close error.
> {noformat}
> Execution Failures:
> /root/drillAutomation/framework/framework/resources/Functional/ctas/ctas_flatten/100000rows/filter5.q
> Query:
> select * from dfs.ctas_flatten.`filter5_100000rows_ctas`
> Failed with exception
> java.sql.SQLException: CONNECTION ERROR: Connection /10.10.100.171:36185 <-->
> drillats4.qa.lab/10.10.100.174:31010 (user client) closed unexpectedly.
> Drillbit down?
> [Error Id: 3d5dad8e-80d0-4c7f-9012-013bf01ce2b7 ]
> at
> org.apache.drill.jdbc.impl.DrillCursor.nextRowInternally(DrillCursor.java:247)
> at org.apache.drill.jdbc.impl.DrillCursor.next(DrillCursor.java:321)
> at
> oadd.net.hydromatic.avatica.AvaticaResultSet.next(AvaticaResultSet.java:187)
> at
> org.apache.drill.jdbc.impl.DrillResultSetImpl.next(DrillResultSetImpl.java:172)
> at
> org.apache.drill.test.framework.DrillTestJdbc.executeQuery(DrillTestJdbc.java:210)
> at
> org.apache.drill.test.framework.DrillTestJdbc.run(DrillTestJdbc.java:99)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> Caused by: oadd.org.apache.drill.common.exceptions.UserException: CONNECTION
> ERROR: Connection /10.10.100.171:36185 <-->
> drillats4.qa.lab/10.10.100.174:31010 (user client) closed unexpectedly.
> Drillbit down?
> [Error Id: 3d5dad8e-80d0-4c7f-9012-013bf01ce2b7 ]
> at
> oadd.org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:543)
> at
> oadd.org.apache.drill.exec.rpc.user.QueryResultHandler$ChannelClosedHandler$1.operationComplete(QueryResultHandler.java:373)
> at
> oadd.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
> at
> oadd.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:603)
> at
> oadd.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:563)
> at
> oadd.io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:406)
> at
> oadd.io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
> at
> oadd.io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:943)
> at
> oadd.io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:592)
> at
> oadd.io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:584)
> at
> oadd.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.closeOnRead(AbstractNioByteChannel.java:71)
> at
> oadd.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.handleReadException(AbstractNioByteChannel.java:89)
> at
> oadd.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:162)
> at
> oadd.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
> at
> oadd.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
> at
> oadd.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
> at oadd.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
> at
> oadd.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
> ... 1 more
> {noformat}
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