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 --> 1.1 --> 1.2 --> 2.0.
Now problem is while upgrading from 1.2 --> 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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