[ 
https://issues.apache.org/jira/browse/RATIS-1529?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

GuoHao updated RATIS-1529:
--------------------------
    Description: 
{code:java}
2022-02-22 17:58:44,541 
[fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc-workerGroup--thread1]
 WARN org.apache.ratis.netty.server.DataStreamManagement: Failed to process 
DataStreamRequestByteBuf:clientId=client-61AA87234F6E,type=STREAM_HEADER,id=23008,offset=0,length=323
java.util.concurrent.CompletionException: java.lang.NullPointerException: 
fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc: Server 
b0403548-9f78-4fef-bca3-0121bf708629 not found: peers=[]
        at 
org.apache.ratis.netty.server.DataStreamManagement.newStreamInfo(DataStreamManagement.java:251)
        at 
org.apache.ratis.netty.server.DataStreamManagement.lambda$readImpl$4(DataStreamManagement.java:411)
        at org.apache.ratis.util.MemoizedSupplier.get(MemoizedSupplier.java:62)
        at 
org.apache.ratis.netty.server.DataStreamManagement.lambda$readImpl$5(DataStreamManagement.java:412)
        at 
java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at 
org.apache.ratis.netty.server.DataStreamManagement$StreamMap.computeIfAbsent(DataStreamManagement.java:187)
        at 
org.apache.ratis.netty.server.DataStreamManagement.readImpl(DataStreamManagement.java:412)
        at 
org.apache.ratis.netty.server.DataStreamManagement.read(DataStreamManagement.java:387)
        at 
org.apache.ratis.netty.server.NettyServerStreamRpc$1.channelRead(NettyServerStreamRpc.java:199)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at 
org.apache.ratis.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
        at 
org.apache.ratis.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at 
org.apache.ratis.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at 
org.apache.ratis.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
        at 
org.apache.ratis.thirdparty.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
        at 
org.apache.ratis.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
        at 
org.apache.ratis.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
        at 
org.apache.ratis.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
        at 
org.apache.ratis.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: 
fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc: Server 
b0403548-9f78-4fef-bca3-0121bf708629 not found: peers=[]
        at java.util.Objects.requireNonNull(Objects.java:290)
        at org.apache.ratis.util.PeerProxyMap.getProxy(PeerProxyMap.java:110)
        at 
org.apache.ratis.netty.server.NettyServerStreamRpc$Proxies.getDataStreamOutput(NettyServerStreamRpc.java:100)
        at 
org.apache.ratis.netty.server.NettyServerStreamRpc$Proxies.getDataStreamOutput(NettyServerStreamRpc.java:88)
        at 
org.apache.ratis.netty.server.DataStreamManagement$StreamInfo.<init>(DataStreamManagement.java:126)
        at 
org.apache.ratis.netty.server.DataStreamManagement.newStreamInfo(DataStreamManagement.java:249)
        ... 26 more {code}

  was:
{code:java}

2022-02-22 17:58:44,541 
[fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc-workerGroup--thread1]
 WARN org.apache.ratis.netty.server.DataStreamManagement: Failed to process 
DataStreamRequestByteBuf:clientId=client-61AA87234F6E,type=STREAM_HEADER,id=23008,offset=0,length=323
java.util.concurrent.CompletionException: java.lang.NullPointerException: 
fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc: Server 
b0403548-9f78-4fef-bca3-0121bf708629 not found: peers=[]
        at 
org.apache.ratis.netty.server.DataStreamManagement.newStreamInfo(DataStreamManagement.java:251)
        at 
org.apache.ratis.netty.server.DataStreamManagement.lambda$readImpl$4(DataStreamManagement.java:411)
        at org.apache.ratis.util.MemoizedSupplier.get(MemoizedSupplier.java:62)
        at 
org.apache.ratis.netty.server.DataStreamManagement.lambda$readImpl$5(DataStreamManagement.java:412)
        at 
java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
        at 
org.apache.ratis.netty.server.DataStreamManagement$StreamMap.computeIfAbsent(DataStreamManagement.java:187)
        at 
org.apache.ratis.netty.server.DataStreamManagement.readImpl(DataStreamManagement.java:412)
        at 
org.apache.ratis.netty.server.DataStreamManagement.read(DataStreamManagement.java:387)
        at 
org.apache.ratis.netty.server.NettyServerStreamRpc$1.channelRead(NettyServerStreamRpc.java:199)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at 
org.apache.ratis.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
        at 
org.apache.ratis.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at 
org.apache.ratis.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
        at 
org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
        at 
org.apache.ratis.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
        at 
org.apache.ratis.thirdparty.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
        at 
org.apache.ratis.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
        at 
org.apache.ratis.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
        at 
org.apache.ratis.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
        at 
org.apache.ratis.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException: 
fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc: Server 
b0403548-9f78-4fef-bca3-0121bf708629 not found: peers=[]
        at java.util.Objects.requireNonNull(Objects.java:290)
        at org.apache.ratis.util.PeerProxyMap.getProxy(PeerProxyMap.java:110)
        at 
org.apache.ratis.netty.server.NettyServerStreamRpc$Proxies.getDataStreamOutput(NettyServerStreamRpc.java:100)
        at 
org.apache.ratis.netty.server.NettyServerStreamRpc$Proxies.getDataStreamOutput(NettyServerStreamRpc.java:88)
        at 
org.apache.ratis.netty.server.DataStreamManagement$StreamInfo.<init>(DataStreamManagement.java:126)
        at 
org.apache.ratis.netty.server.DataStreamManagement.newStreamInfo(DataStreamManagement.java:249)
        ... 26 more {code}


> Fix NettyServerStreamRpc.Proxies#getProxy NPE
> ---------------------------------------------
>
>                 Key: RATIS-1529
>                 URL: https://issues.apache.org/jira/browse/RATIS-1529
>             Project: Ratis
>          Issue Type: Sub-task
>            Reporter: GuoHao
>            Assignee: GuoHao
>            Priority: Major
>
> {code:java}
> 2022-02-22 17:58:44,541 
> [fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc-workerGroup--thread1]
>  WARN org.apache.ratis.netty.server.DataStreamManagement: Failed to process 
> DataStreamRequestByteBuf:clientId=client-61AA87234F6E,type=STREAM_HEADER,id=23008,offset=0,length=323
> java.util.concurrent.CompletionException: java.lang.NullPointerException: 
> fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc: Server 
> b0403548-9f78-4fef-bca3-0121bf708629 not found: peers=[]
>         at 
> org.apache.ratis.netty.server.DataStreamManagement.newStreamInfo(DataStreamManagement.java:251)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement.lambda$readImpl$4(DataStreamManagement.java:411)
>         at 
> org.apache.ratis.util.MemoizedSupplier.get(MemoizedSupplier.java:62)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement.lambda$readImpl$5(DataStreamManagement.java:412)
>         at 
> java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement$StreamMap.computeIfAbsent(DataStreamManagement.java:187)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement.readImpl(DataStreamManagement.java:412)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement.read(DataStreamManagement.java:387)
>         at 
> org.apache.ratis.netty.server.NettyServerStreamRpc$1.channelRead(NettyServerStreamRpc.java:199)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
>         at 
> org.apache.ratis.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
>         at 
> org.apache.ratis.thirdparty.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:795)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:480)
>         at 
> org.apache.ratis.thirdparty.io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378)
>         at 
> org.apache.ratis.thirdparty.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
>         at 
> org.apache.ratis.thirdparty.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
>         at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.NullPointerException: 
> fc12e60f-0cae-475e-8233-5b08287c70cf-NettyServerStreamRpc: Server 
> b0403548-9f78-4fef-bca3-0121bf708629 not found: peers=[]
>         at java.util.Objects.requireNonNull(Objects.java:290)
>         at org.apache.ratis.util.PeerProxyMap.getProxy(PeerProxyMap.java:110)
>         at 
> org.apache.ratis.netty.server.NettyServerStreamRpc$Proxies.getDataStreamOutput(NettyServerStreamRpc.java:100)
>         at 
> org.apache.ratis.netty.server.NettyServerStreamRpc$Proxies.getDataStreamOutput(NettyServerStreamRpc.java:88)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement$StreamInfo.<init>(DataStreamManagement.java:126)
>         at 
> org.apache.ratis.netty.server.DataStreamManagement.newStreamInfo(DataStreamManagement.java:249)
>         ... 26 more {code}



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