[
https://issues.apache.org/jira/browse/DRILL-3197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14561698#comment-14561698
]
Khurram Faraaz commented on DRILL-3197:
---------------------------------------
Removing the cast to double from the AVG aggregate function returns a different
Exception.
{code}
0: jdbc:drill:schema=dfs.tmp> select columns[0], columns[2], columns[3],
AVG(columns[6]) OVER (PARTITION BY columns[0]) FROM `airports.csv`;
Error: SYSTEM ERROR: org.apache.drill.exec.exception.SchemaChangeException:
Failure while trying to materialize incoming schema. Errors:
Error in expression at index -1. Error: Missing function implementation:
[castBIGINT(BIT-OPTIONAL)]. Full expression: --UNKNOWN EXPRESSION--..
Fragment 0:0
[Error Id: 0f74d9ce-6116-46a9-bff3-24eff5112dfe on centos-01.qa.lab:31010]
(state=,code=0)
{code}
Related stack trace from drillbit.log
{code}
2015-05-27 20:48:32,663 [BitServer-6] INFO o.a.drill.exec.work.foreman.Foreman
- State change requested. RUNNING --> FAILED
org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR:
org.apache.drill.exec.exception.SchemaChangeException: Failure while trying to
materialize incoming schema. Errors:
Error in expression at index -1. Error: Missing function implementation:
[castBIGINT(BIT-OPTIONAL)]. Full expression: --UNKNOWN EXPRESSION--..
Fragment 0:0
[Error Id: 4f36a1a5-9901-4a32-82d5-ee926104415f on centos-04.qa.lab:31010]
at
org.apache.drill.exec.work.foreman.QueryManager$1.statusUpdate(QueryManager.java:458)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
org.apache.drill.exec.rpc.control.WorkEventBus.statusUpdate(WorkEventBus.java:71)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
org.apache.drill.exec.work.batch.ControlMessageHandler.handle(ControlMessageHandler.java:79)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
org.apache.drill.exec.rpc.control.ControlServer.handle(ControlServer.java:61)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
org.apache.drill.exec.rpc.control.ControlServer.handle(ControlServer.java:38)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at org.apache.drill.exec.rpc.RpcBus.handle(RpcBus.java:61)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:233)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:205)
[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89)
[netty-codec-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:150)
[netty-handler-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[netty-codec-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242)
[netty-codec-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847)
[netty-transport-4.0.27.Final.jar:4.0.27.Final]
at
io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:618)
[netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
at
io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:329)
[netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:250)
[netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
[netty-common-4.0.27.Final.jar:4.0.27.Final]
at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
{code}
> Query that uses window functions fails
> --------------------------------------
>
> Key: DRILL-3197
> URL: https://issues.apache.org/jira/browse/DRILL-3197
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Affects Versions: 1.0.0
> Environment: faec150598840c40827e6493992d81209aa936da
> Reporter: Khurram Faraaz
> Assignee: Chris Westin
> Labels: window_function
>
> Window functions were enabled, test was run on 4 node cluster on CentOS.
> This query works on Postgres 9.3 for the same input data.
> {code}
> select id, type, name, AVG(elevation_ft) OVER (PARTITION BY id) FROM airports;
> {code}
> The equivalent query failed on Drill, for exactly same data from airports.csv
> file.
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select columns[0], columns[2], columns[3],
> AVG(cast(columns[6] as double)) OVER (PARTITION BY columns[0]) FROM
> `airports.csv`;
> Error: SYSTEM ERROR: java.lang.NumberFormatException: empty String
> Fragment 0:0
> [Error Id: ea216af8-baf3-406b-a811-4052072dff79 on centos-02.qa.lab:31010]
> (state=,code=0)
> {code}
> Stack trace from drillbit.log
> {code}
> 2015-05-27 18:48:45,122 [2a99ee73-479d-4b7d-5237-e597251266dc:frag:0:0] ERROR
> o.a.d.c.exceptions.UserException - SYSTEM ERROR:
> java.lang.NumberFormatException: empty String
> Fragment 0:0
> [Error Id: ea216af8-baf3-406b-a811-4052072dff79 on centos-02.qa.lab:31010]
> org.apache.drill.common.exceptions.UserException: SYSTEM ERROR:
> java.lang.NumberFormatException: empty String
> Fragment 0:0
> [Error Id: ea216af8-baf3-406b-a811-4052072dff79 on centos-02.qa.lab:31010]
> at
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:522)
> ~[drill-common-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:324)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:180)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:293)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
> [drill-common-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> [na:1.7.0_45]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> [na:1.7.0_45]
> at java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]
> Caused by: java.lang.NumberFormatException: empty String
> at
> sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1011)
> ~[na:1.7.0_45]
> at java.lang.Double.parseDouble(Double.java:540) ~[na:1.7.0_45]
> at
> org.apache.drill.exec.test.generated.ProjectorGen4.doEval(ProjectorTemplate.java:76)
> ~[na:na]
> at
> org.apache.drill.exec.test.generated.ProjectorGen4.projectRecords(ProjectorTemplate.java:62)
> ~[na:na]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.doWork(ProjectRecordBatch.java:172)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:93)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:129)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:146)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:105)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:95)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.xsort.ExternalSortBatch.buildSchema(ExternalSortBatch.java:189)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:127)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:105)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:95)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.svremover.RemovingRecordBatch.innerNext(RemovingRecordBatch.java:92)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:146)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:105)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:95)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.window.WindowFrameRecordBatch.buildSchema(WindowFrameRecordBatch.java:182)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:127)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:105)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:95)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:129)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:146)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:105)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:95)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:129)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:146)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:83)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:80)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:73)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:259)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:253)
> ~[drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at java.security.AccessController.doPrivileged(Native Method)
> ~[na:1.7.0_45]
> at javax.security.auth.Subject.doAs(Subject.java:415) ~[na:1.7.0_45]
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1566)
> ~[hadoop-common-2.5.1-mapr-1503.jar:na]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:253)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> ... 4 common frames omitted
> 2015-05-27 18:48:45,132 [BitServer-6] INFO
> o.a.drill.exec.work.foreman.Foreman - State change requested. RUNNING -->
> FAILED
> org.apache.drill.common.exceptions.UserRemoteException: SYSTEM ERROR:
> java.lang.NumberFormatException: empty String
> Fragment 0:0
> [Error Id: ea216af8-baf3-406b-a811-4052072dff79 on centos-02.qa.lab:31010]
> at
> org.apache.drill.exec.work.foreman.QueryManager$1.statusUpdate(QueryManager.java:458)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.rpc.control.WorkEventBus.statusUpdate(WorkEventBus.java:71)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.work.batch.ControlMessageHandler.handle(ControlMessageHandler.java:79)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.rpc.control.ControlServer.handle(ControlServer.java:61)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.rpc.control.ControlServer.handle(ControlServer.java:38)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at org.apache.drill.exec.rpc.RpcBus.handle(RpcBus.java:61)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:233)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> org.apache.drill.exec.rpc.RpcBus$InboundHandler.decode(RpcBus.java:205)
> [drill-java-exec-1.0.0-mapr-r1-rebuffed.jar:1.0.0-mapr-r1]
> at
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:89)
> [netty-codec-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.handler.timeout.ReadTimeoutHandler.channelRead(ReadTimeoutHandler.java:150)
> [netty-handler-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
> [netty-codec-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242)
> [netty-codec-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847)
> [netty-transport-4.0.27.Final.jar:4.0.27.Final]
> at
> io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:618)
> [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
> at
> io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:329)
> [netty-transport-native-epoll-4.0.27.Final-linux-x86_64.jar:na]
> at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:250)
> [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:744) [na:1.7.0_45]
> {code}
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