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https://issues.apache.org/jira/browse/FLINK-9057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16416867#comment-16416867
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ASF GitHub Bot commented on FLINK-9057:
---------------------------------------
Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/5747
> NPE in CreditBasedSequenceNumberingViewReader when cancelling before
> initilization was complete
> -----------------------------------------------------------------------------------------------
>
> Key: FLINK-9057
> URL: https://issues.apache.org/jira/browse/FLINK-9057
> Project: Flink
> Issue Type: Bug
> Components: Network
> Affects Versions: 1.5.0, 1.6.0
> Reporter: Nico Kruber
> Assignee: Nico Kruber
> Priority: Blocker
> Fix For: 1.5.0
>
>
> {{RescalingITCase}} unveiled an exception which may occur when shutting down
> before completely initializing the network stack:
> https://travis-ci.org/apache/flink/jobs/356612100
> {code}
> 01:08:13,458 WARN
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline - An
> exception was thrown by a user handler's exceptionCaught() method while
> handling the following exception:
> java.lang.NullPointerException
> at
> org.apache.flink.runtime.io.network.netty.CreditBasedSequenceNumberingViewReader.releaseAllResources(CreditBasedSequenceNumberingViewReader.java:192)
> at
> org.apache.flink.runtime.io.network.netty.PartitionRequestQueue.releaseAllResources(PartitionRequestQueue.java:322)
> at
> org.apache.flink.runtime.io.network.netty.PartitionRequestQueue.channelInactive(PartitionRequestQueue.java:298)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:237)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:223)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:237)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:223)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:237)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:223)
> at
> org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:294)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:237)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:223)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:829)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:610)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
> at
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
> at
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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