org.apache.bookkeeper.proto.BookieRequestHandler - Unhandled exception occurred in I/O thread or han

在使用pulsar的过程中报了这个么个错误：

22:11:15.867 [bookie-io-1-19] ERROR org.apache.bookkeeper.proto.BookieRequestHandler - Unhandled exception occurred in I/O thread or handler on [id: 0x50be42ef, L:/172.19.148.137:3181 - R:/172.19.148.138:57452]
io.netty.handler.codec.TooLongFrameException: Adjusted frame length exceeds 5253120: 7051363 - discarded
at io.netty.handler.codec.LengthFieldBasedFrameDecoder.fail(LengthFieldBasedFrameDecoder.java:503) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.LengthFieldBasedFrameDecoder.failIfNecessary(LengthFieldBasedFrameDecoder.java:489) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.LengthFieldBasedFrameDecoder.exceededFrameLength(LengthFieldBasedFrameDecoder.java:376) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode(LengthFieldBasedFrameDecoder.java:419) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode(LengthFieldBasedFrameDecoder.java:332) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:501) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:440) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276) ~[io.netty-netty-codec-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [io.netty-netty-transport-4.1.51.Final.jar:4.1.51.Final]
at io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:792) [io.netty-netty-transport-native-epoll-4.1.51.Final-linux-x86_64.jar:4.1.51.Final]
at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:475) [io.netty-netty-transport-native-epoll-4.1.51.Final-linux-x86_64.jar:4.1.51.Final]
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:378) [io.netty-netty-transport-native-epoll-4.1.51.Final-linux-x86_64.jar:4.1.51.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [io.netty-netty-common-4.1.51.Final.jar:4.1.51.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [io.netty-netty-common-4.1.51.Final.jar:4.1.51.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [io.netty-netty-common-4.1.51.Final.jar:4.1.51.Final]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]

原因：是netty的长度检测报错，pulsar的broker有个配置maxMessageSize限制单条数据大小，相应的bookeeper配置文件了也有配置文件nettyMaxFrameSizeBytes，默认都是5M，我的数据长度超过5M，就把broker的配置改成了20M，因为不知道bookeeper也有限制所以报错了。

解决方法：把两个配置改大，我改成了20M，问题解决。