Occasionally seeing NoSuchElementException

[himanshu0791]

Bug Report

java.util.NoSuchElementException: null at java.util.Arrays$ArrayItr.next(Arrays.java:4245) at io.lettuce.core.output.KeyValueListOutput.set(KeyValueListOutput.java:80) at io.lettuce.core.protocol.RedisStateMachine.safeSet(RedisStateMachine.java:810) at io.lettuce.core.protocol.RedisStateMachine.handleBytes(RedisStateMachine.java:572) at i.l.core.protocol.RedisStateMachine$State$Type.handle(RedisStateMachine.java:206) at io.lettuce.core.protocol.RedisStateMachine.doDecode(RedisStateMachine.java:334) at io.lettuce.core.protocol.RedisStateMachine.decode(RedisStateMachine.java:295) at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:842) at io.lettuce.core.protocol.CommandHandler.decode0(CommandHandler.java:793) at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:767) at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:659) at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:599) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412) at i.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) at i.n.c.e.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:800) at io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:509) at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:407) at i.n.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ... 1 common frames omitted Wrapped by: java.util.concurrent.CompletionException: java.util.NoSuchElementException at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315) at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320) at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.lang.Thread.run(Thread.java:840)

This shows time to time on our logs on v6.2.2

[tishun]

Hey @himanshu0791 ,
to help you we will need more information on how / when this happens.
Are you able to reproduce it somehow? What is the code that causes it?

Simply by looking in to the stack trace it would be hard to know what the issue is.