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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4338) Concurrent query remains in CANCELLATION_REQUESTED state
Date Mon, 04 Apr 2016 12:26:25 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15224022#comment-15224022
] 

Khurram Faraaz commented on DRILL-4338:
---------------------------------------

This looks like a duplicate of DRILL-3763

> Concurrent query remains in CANCELLATION_REQUESTED state 
> ---------------------------------------------------------
>
>                 Key: DRILL-4338
>                 URL: https://issues.apache.org/jira/browse/DRILL-4338
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Flow
>    Affects Versions: 1.4.0
>         Environment: 4 node cluster CentOS
>            Reporter: Khurram Faraaz
>         Attachments: ConcurrencyTest.java, query_In_cancellation_requested_state.png
>
>
> Execute a query concurrently through a Java program and while the java program is under
execution (executing SQL queries concurrently) issue Ctrl-C on the prompt where the java program
was being executed.
> Here are two observations, 
> (1) There is an Exception in drillbit.log.
> (2) Once Ctrl-C was issued to the java program, queries that were under execution at
that point of time, move from FAILED state to CANCELLATION_REQUESTED state, they do not end
up in CANCELED state. Ideally that last state of these queries should be CANCELED state and
not CANCELLATION_REQUESTED. 
> Snippet from drillbit.log
> {noformat}
> 2016-02-02 06:21:21,903 [294fb51d-8a4c-c099-dc90-97434056e3d7:frag:0:0] INFO  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0: State change requested AWAITING_ALLOCATION -->
RUNNING
> 2016-02-02 06:21:21,903 [294fb51d-8a4c-c099-dc90-97434056e3d7:frag:0:0] INFO  o.a.d.e.w.f.FragmentStatusReporter
- 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0: State to report: RUNNING
> 2016-02-02 06:21:48,560 [UserServer-1] ERROR o.a.d.exec.rpc.RpcExceptionHandler - Exception
in RPC communication.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087 (user
client).  Closing connection.
> java.io.IOException: syscall:read(...)() failed: Connection reset by peer
> 2016-02-02 06:21:48,562 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0:
State change requested RUNNING --> FAILED
> 2016-02-02 06:21:48,562 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-f424-6adc-d668-1659e4353698:0:0:
State change requested RUNNING --> FAILED
> 2016-02-02 06:21:48,562 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-c7f6-2c8f-0689-af9de21a6d20:0:0:
State change requested RUNNING --> FAILED
> 2016-02-02 06:21:48,563 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51e-5de9-0919-be56-52f75a0532f1:0:0:
State change requested RUNNING --> FAILED
> 2016-02-02 06:21:48,573 [CONTROL-rpc-event-queue] INFO  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-f424-6adc-d668-1659e4353698:0:0: State change requested FAILED --> CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,573 [CONTROL-rpc-event-queue] WARN  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-f424-6adc-d668-1659e4353698:0:0: Ignoring unexpected state transition FAILED -->
CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,580 [CONTROL-rpc-event-queue] INFO  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51e-5de9-0919-be56-52f75a0532f1:0:0: State change requested FAILED --> CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,580 [CONTROL-rpc-event-queue] WARN  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51e-5de9-0919-be56-52f75a0532f1:0:0: Ignoring unexpected state transition FAILED -->
CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,588 [CONTROL-rpc-event-queue] INFO  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-c7f6-2c8f-0689-af9de21a6d20:0:0: State change requested FAILED --> CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,588 [CONTROL-rpc-event-queue] WARN  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-c7f6-2c8f-0689-af9de21a6d20:0:0: Ignoring unexpected state transition FAILED -->
CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,596 [CONTROL-rpc-event-queue] INFO  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0: State change requested FAILED --> CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,596 [CONTROL-rpc-event-queue] WARN  o.a.d.e.w.fragment.FragmentExecutor
- 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0: Ignoring unexpected state transition FAILED -->
CANCELLATION_REQUESTED
> 2016-02-02 06:21:48,597 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-f424-6adc-d668-1659e4353698:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,599 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
> at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,600 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51e-5de9-0919-be56-52f75a0532f1:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,600 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,601 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-c7f6-2c8f-0689-af9de21a6d20:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,601 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,601 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,601 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,602 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-f424-6adc-d668-1659e4353698:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,602 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,602 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51e-5de9-0919-be56-52f75a0532f1:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,603 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,603 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-c7f6-2c8f-0689-af9de21a6d20:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,603 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> 2016-02-02 06:21:48,603 [UserServer-1] INFO  o.a.d.e.w.fragment.FragmentExecutor - 294fb51d-8a4c-c099-dc90-97434056e3d7:0:0:
State change requested FAILED --> FAILED
> 2016-02-02 06:21:48,604 [UserServer-1] WARN  o.a.d.exec.rpc.RpcExceptionHandler - Exception
occurred with closed channel.  Connection: /10.10.100.201:31010 <--> /10.10.100.201:45087
(user client)
> io.netty.handler.codec.EncoderException: RpcEncoder must produce at least one message.
>         at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:98)
~[netty-codec-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:705)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext.access$1900(AbstractChannelHandlerContext.java:32)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.write(AbstractChannelHandlerContext.java:980)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$WriteAndFlushTask.write(AbstractChannelHandlerContext.java:1032)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.AbstractChannelHandlerContext$AbstractWriteTask.run(AbstractChannelHandlerContext.java:965)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:254) [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
>         at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]
> {noformat}



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