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List:       cassandra-user
Subject:    Re: Cassandra 2.0.12 - lots of "Got an IOException in internalRead!"
From:       Michael Shuler <michael () pbandjelly ! org>
Date:       2015-03-31 18:43:58
Message-ID: 551AEAEE.1010501 () pbandjelly ! org
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On 03/31/2015 10:15 AM, Caraballo, Rafael wrote:
> In Cassandra 2.0.12, we are seeing a hundreds of these warning in every
> node…
>
> WARN [Thrift-Selector_16] 2015-03-31 00:48:49,700 Message.java (line
> 364) Got an IOException in internalRead!
>
> java.io.IOException: Connection reset by peer
>
>          at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
>
>          at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)

This is indicative of network issues. Check ifconfig for errors/dropped 
values reported on the nodes and talk to your NOC to see if there are 
errors on switches, etc.

-- 
Michael

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