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From "Ekaterina Dimitrova (Jira)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-13649) Uncaught exceptions in Netty pipeline
Date Tue, 03 Aug 2021 19:45:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-13649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17392492#comment-17392492
] 

Ekaterina Dimitrova commented on CASSANDRA-13649:
-------------------------------------------------

Hey [~norman],

Any advice about the status of this ticket?

 

> Uncaught exceptions in Netty pipeline
> -------------------------------------
>
>                 Key: CASSANDRA-13649
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13649
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Legacy/Streaming and Messaging, Legacy/Testing
>            Reporter: Stefan Podkowinski
>            Assignee: Norman Maurer
>            Priority: Normal
>              Labels: patch
>             Fix For: 2.2.x, 3.0.x, 3.11.x, 4.0.x
>
>         Attachments: 0001-CASSANDRA-13649-Ensure-all-exceptions-are-correctly-.patch,
test_stdout.txt
>
>
> I've noticed some netty related errors in trunk in [some of the dtest results|https://builds.apache.org/view/A-D/view/Cassandra/job/Cassandra-devbranch-dtest/106/#showFailuresLink].
Just want to make sure that we don't have to change anything related to the exception handling
in our pipeline and that this isn't a netty issue. Actually if this causes flakiness but is
otherwise harmless, we should do something about it, even if it's just on the dtest side.
> {noformat}
> WARN  [epollEventLoopGroup-2-9] 2017-06-28 17:23:49,699 Slf4JLogger.java:151 - An exceptionCaught()
event was fired, and it reached at the tail of the pipeline. It usually means the last handler
in the pipeline did not handle the exception.
> io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed: Connection
reset by peer
> 	at io.netty.channel.unix.FileDescriptor.readAddress(...)(Unknown Source) ~[netty-all-4.0.44.Final.jar:4.0.44.Final]
> {noformat}
> And again in another test:
> {noformat}
> WARN  [epollEventLoopGroup-2-8] 2017-06-29 02:27:31,300 Slf4JLogger.java:151 - An exceptionCaught()
event was fired, and it reached at the tail of the pipeline. It usually means the last handler
in the pipeline did not handle the exception.
> io.netty.channel.unix.Errors$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]
> {noformat}
> Edit:
> The {{io.netty.channel.unix.Errors$NativeIoException: syscall:read(...)() failed}} error
also causes tests to fail for 3.0 and 3.11. 



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