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From sankalp kohli <kohlisank...@gmail.com>
Subject Re: Row Mutation Errors while upgrading to Cassandra2.0
Date Mon, 23 Sep 2013 02:31:08 GMT
You are upgrading to 2.0 in Prod? What is the urgency?


On Sun, Sep 22, 2013 at 7:02 PM, Shashilpi Krishan <
Shashilpi.Krishan@wizecommerce.com> wrote:

>  Hi Everyone.
>
>
>
> We had a Cassandra cluster (running with v1.0.7) spread across 3 data
> centers with each data center having 16 nodes. We started upgrading that to
> 2.0 but realized that we can’t go directly to 2.0 due to read failures,
> hence to avoid down time we have to go from 1.0 à 1.1 à 1.2 à 2.0.
>
>
>
> Now problem is while upgrading from 1.2 à 2.0 we saw below errors
> flooding the system.log files in one data center only until we upgraded all
> the nodes in every DC to 2.0. We think that moment last node was upgraded
> then this error was gone. Does anyone has idea what could have been causing
> this? Is it because of some version incompatibility?
>
>
>
> ERROR [MutationStage:208] 2013-09-21 17:51:08,163
> RowMutationVerbHandler.java (line 63) Error in row mutation
>
> java.io.EOFException
>
>         at java.io.DataInputStream.readFully(DataInputStream.java:197)
>
>         at
> org.apache.cassandra.net.CompactEndpointSerializationHelper.deserialize(CompactEndpointSerializationHelper.java:37)
>
>         at
> org.apache.cassandra.db.RowMutationVerbHandler.forwardToLocalNodes(RowMutationVerbHandler.java:81)
>
>         at
> org.apache.cassandra.db.RowMutationVerbHandler.doVerb(RowMutationVerbHandler.java:49)
>
>         at
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:56)
>
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>
>         at java.lang.Thread.run(Thread.java:722)
>  ------------------------------
>
> *Thanks & Regards*
>
> *
> Shashilpi Krishan*
>
>
>
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