[SPARK-12967] NettyRPC races with SparkContext.stop() and throws exception

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 2.0.0
• Component/s: Spark Core
• Assignee: Nishkam Ravi
• Reporter: Nishkam Ravi
• Created: 22/Jan/16 22:36
• Updated: 27/Jan/16 05:15
• Resolved: 27/Jan/16 05:15

Description

This happens frequently and can be confusing:

16/01/22 13:07:34 INFO ShutdownHookManager: Shutdown hook called
16/01/22 13:07:34 WARN Dispatcher: Message RemoteProcessDisconnected(c1706.halxg.cloudera.com:52665) dropped.
java.lang.IllegalStateException: RpcEnv already stopped.
at org.apache.spark.rpc.netty.Dispatcher.postMessage(Dispatcher.scala:165)
at org.apache.spark.rpc.netty.Dispatcher.postToAll(Dispatcher.scala:110)
at org.apache.spark.rpc.netty.NettyRpcHandler.channelInactive(NettyRpcEnv.scala:618)
at org.apache.spark.network.server.TransportRequestHandler.channelInactive(TransportRequestHandler.java:99)
at org.apache.spark.network.server.TransportChannelHandler.channelInactive(TransportChannelHandler.java:104)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75)
at io.netty.handler.timeout.IdleStateHandler.channelInactive(IdleStateHandler.java:257)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
at io.netty.channel.ChannelInboundHandlerAdapter.channelInactive(ChannelInboundHandlerAdapter.java:75)
at org.apache.spark.network.util.TransportFrameDecoder.channelInactive(TransportFrameDecoder.java:183)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:208)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:194)
at io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:828)
at io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:621)
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:328)
at io.netty.util.concurrent.SingleThreadEventExecutor.confirmShutdown(SingleThreadEventExecutor.java:627)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:362)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
at java.lang.Thread.run(Thread.java:745)

Issue Links

• links to: [Github] Pull Request #10881 (nishkamravi2)