grpc (some )Threads are not closing properly

[Chandra Vennapusa Kishore Reddy]

Hello,

I am new to Grpc and so far like it very much.

30-03-2021 12:33:22.374 ^[[35m[grpc-shared-destroyer-0]^[[0;39m ^[[1;31mERROR^[[0;39m i.grpc.internal.LogExceptionRunnable.run - Exception wh$

io.grpc.netty.shaded.io.netty.channel.ChannelException: eventfd_write(...) failed: Bad file descriptor

        at io.grpc.netty.shaded.io.netty.channel.epoll.Native.eventFdWrite(Native Method)

        at io.grpc.netty.shaded.io.netty.channel.epoll.EpollEventLoop.wakeup(EpollEventLoop.java:182)

        at io.grpc.netty.shaded.io.netty.util.concurrent.SingleThreadEventExecutor.shutdownGracefully(SingleThreadEventExecutor.java:615)

        at io.grpc.netty.shaded.io.netty.util.concurrent.MultithreadEventExecutorGroup.shutdownGracefully(MultithreadEventExecutorGroup.java:$

        at io.grpc.netty.shaded.io.grpc.netty.Utils$DefaultEventLoopGroupResource.close(Utils.java:346)

        at io.grpc.netty.shaded.io.grpc.netty.Utils$DefaultEventLoopGroupResource.close(Utils.java:318)

        at io.grpc.internal.SharedResourceHolder$2.run(SharedResourceHolder.java:152)

        at io.grpc.internal.LogExceptionRunnable.run(LogExceptionRunnable.java:43)

        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)

        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)

        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)

        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)

        at java.base/java.lang.Thread.run(Thread.java:830)

[zda...@google.com]

Could you provide more context how to reproduce the issue? Is any RPC failing, or is it just a warning when the channel is shutting down?