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https://issues.apache.org/jira/browse/CASSANDRA-8655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14507006#comment-14507006
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Mike Adamson commented on CASSANDRA-8655:
-----------------------------------------
I am seeing this on a 4 node cluster running 2.1.4
> Exception on upgrade to trunk
> -----------------------------
>
> Key: CASSANDRA-8655
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8655
> Project: Cassandra
> Issue Type: Bug
> Reporter: Philip Thompson
> Assignee: Aleksey Yeschenko
> Fix For: 3.0
>
>
> The dtest
> upgrade_through_versions_test.TestUpgrade_from_cassandra_2_1_latest_tag_to_trunk_HEAD.upgrade_test_mixed
> is failing with the following exception:
> {code}
> ERROR [Thread-10] 2015-01-20 14:12:44,117 CassandraDaemon.java:170 -
> Exception in thread Thread[Thread-10,5,main]
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.db.SliceFromReadCommandSerializer.deserialize(SliceFromReadCommand.java:153)
> ~[main/:na]
> at
> org.apache.cassandra.db.ReadCommandSerializer.deserialize(ReadCommand.java:157)
> ~[main/:na]
> at
> org.apache.cassandra.db.ReadCommandSerializer.deserialize(ReadCommand.java:131)
> ~[main/:na]
> at org.apache.cassandra.net.MessageIn.read(MessageIn.java:99)
> ~[main/:na]
> at
> org.apache.cassandra.net.IncomingTcpConnection.receiveMessage(IncomingTcpConnection.java:168)
> ~[main/:na]
> at
> org.apache.cassandra.net.IncomingTcpConnection.receiveMessages(IncomingTcpConnection.java:150)
> ~[main/:na]
> at
> org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:82)
> ~[main/:na]
> {code}
> It is trying to execute a simple "SELECT k,v FROM cf WHERE k=X" query on a
> trunk node after upgrading from 2.1-HEAD.
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