Sumanth Pasupuleti created CASSANDRA-14909:
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Summary: Netty IOExceptions caused by unclean client disconnects
being logged at INFO instead of TRACE
Key: CASSANDRA-14909
URL: https://issues.apache.org/jira/browse/CASSANDRA-14909
Project: Cassandra
Issue Type: Bug
Reporter: Sumanth Pasupuleti
Fix For: 4.0
Observed spam logs on 3.0.17 cluster with redundant Netty IOExceptions caused
due to client-side disconnections.
{code:java}
INFO [epollEventLoopGroup-2-28] 2018-11-20 23:23:04,386 Message.java:619 -
Unexpected exception during request; channel = [id: 0x12995bc1,
L:/xxx.xx.xxx.xxx:7104 - R:/xxx.xx.xxx.xxx:33754]
io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed:
Connection reset by peer
at io.netty.channel.unix.FileDescriptor.readAddress(...)(Unknown
Source) ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
{code}
{code:java}
INFO [epollEventLoopGroup-2-23] 2018-11-20 13:16:33,263 Message.java:619 -
Unexpected exception during request; channel = [id: 0x98bd7c0e,
L:/xxx.xx.xxx.xxx:7104 - R:/xxx.xx.xx.xx:33350]
io.netty.channel.unix.Errors$NativeIoException: readAddress() failed:
Connection timed out
at io.netty.channel.unix.Errors.newIOException(Errors.java:117)
~[netty-all-4.0.44.Final.jar:4.0.44.Final]
at io.netty.channel.unix.Errors.ioResult(Errors.java:138)
~[netty-all-4.0.44.Final.jar:4.0.44.Final]
at
io.netty.channel.unix.FileDescriptor.readAddress(FileDescriptor.java:175)
~[netty-all-4.0.44.Final.jar:4.0.44.Final]
at
io.netty.channel.epoll.AbstractEpollChannel.doReadBytes(AbstractEpollChannel.java:238)
~[netty-all-4.0.44.Final.jar:4.0.44.Final]
at
io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:926)
~[netty-all-4.0.44.Final.jar:4.0.44.Final]
at
io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:397)
[netty-all-4.0.44.Final.jar:4.0.44.Final]
at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:302)
[netty-all-4.0.44.Final.jar:4.0.44.Final]
at
io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
[netty-all-4.0.44.Final.jar:4.0.44.Final]
at
io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
[netty-all-4.0.44.Final.jar:4.0.44.Final]
{code}
[CASSANDRA-7849|https://issues.apache.org/jira/browse/CASSANDRA-7849] addresses
this for JAVA IO Exception like "java.io.IOException: Connection reset by
peer", but not for Netty IOException since the exception message in Netty
includes method name.
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