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https://issues.apache.org/jira/browse/CASSANDRA-15946?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17178066#comment-17178066
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David Capwell commented on CASSANDRA-15946:
-------------------------------------------
Ok, now that I disabled filters I added read/write queries and getting
{code}
Caused by: org.apache.cassandra.exceptions.InvalidRequestException: Expected 4
or 0 byte int (8)
at
org.apache.cassandra.cql3.Constants$Marker.bindAndGet(Constants.java:303)
at
org.apache.cassandra.cql3.restrictions.SingleColumnRestriction$EQRestriction.appendTo(SingleColumnRestriction.java:160)
at
org.apache.cassandra.cql3.restrictions.PrimaryKeyRestrictionSet.appendTo(PrimaryKeyRestrictionSet.java:171)
at
org.apache.cassandra.cql3.restrictions.PrimaryKeyRestrictionSet.valuesAsClustering(PrimaryKeyRestrictionSet.java:163)
at
org.apache.cassandra.cql3.restrictions.PrimaryKeyRestrictionSet.values(PrimaryKeyRestrictionSet.java:223)
at
org.apache.cassandra.cql3.restrictions.StatementRestrictions.getPartitionKeys(StatementRestrictions.java:648)
at
org.apache.cassandra.cql3.statements.ModificationStatement.buildPartitionKeyNames(ModificationStatement.java:296)
at
org.apache.cassandra.cql3.statements.ModificationStatement.addUpdates(ModificationStatement.java:643)
at
org.apache.cassandra.cql3.statements.ModificationStatement.getMutations(ModificationStatement.java:632)
at
org.apache.cassandra.cql3.statements.ModificationStatement.executeWithoutCondition(ModificationStatement.java:432)
at
org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:420)
at
org.apache.cassandra.distributed.impl.Coordinator.executeInternal(Coordinator.java:100)
at
org.apache.cassandra.distributed.impl.Coordinator.lambda$executeWithResult$0(Coordinator.java:62)
{code}
In short, I think this is a much bigger issue. jvm dtest doesn't work properly
in mixed mode and there might be mixed mode bugs as well (not sure if I can
attribute this to jvm dtest or not)...
Given that, I don't think this patch solves the real problem.
> NPE when sending REQUEST_RSP from 3.0 to 4.0 in in-jvm dtests
> -------------------------------------------------------------
>
> Key: CASSANDRA-15946
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15946
> Project: Cassandra
> Issue Type: Bug
> Components: Test/dtest
> Reporter: Jacek Lewandowski
> Assignee: Jacek Lewandowski
> Priority: Normal
>
> There is a communication problem when testing upgrades using in-JVM dtest
> between Cassandra 3 and 4.
> In a method {{registerInboundFilter}} of {{Instance}}, we get a message which
> was just received and we prepare it for filtering as part of which, we
> serialize the payload again. This is fine when dealing with incoming
> Cassandra 4 message, because we can serialize it. However when we get the
> Cassandra 3 message, which uses a different protocol, and we get something
> like {{REQUEST_RSP}}, we can surely deserialize it through some special
> deserialization path, but we cannot serialize the payload for it as there is
> no serializer defined for {{REQUEST_RSP}} - no wonder, why would Cassandra
> 4.0 need to be able to serialize Cassandra 3.0 payloads?
> {code}
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.net.Message$Serializer.serializePost40(Message.java:760)
> at
> org.apache.cassandra.net.Message$Serializer.serialize(Message.java:618)
> at
> org.apache.cassandra.distributed.impl.Instance.serializeMessage(Instance.java:267)
> at
> org.apache.cassandra.distributed.impl.Instance.lambda$registerInboundFilter$4(Instance.java:234)
> at
> org.apache.cassandra.net.InboundSink$Filtered.accept(InboundSink.java:62)
> at
> org.apache.cassandra.net.InboundSink$Filtered.accept(InboundSink.java:49)
> at org.apache.cassandra.net.InboundSink.accept(InboundSink.java:93)
> at
> org.apache.cassandra.distributed.impl.Instance.lambda$null$6(Instance.java:305)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
> at
> org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$LocalSessionFutureTask.run(AbstractLocalAwareExecutorService.java:137)
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:119)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.lang.Thread.run(Thread.java:748)
> {code}
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