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https://issues.apache.org/jira/browse/CASSANDRA-21545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18100675#comment-18100675
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Stefan Miklosovic commented on CASSANDRA-21545:
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[~marcuse] [~samt] any ideas?
> CQL load interference with Cassandra 6 cold startup
> ---------------------------------------------------
>
> Key: CASSANDRA-21545
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21545
> Project: Apache Cassandra
> Issue Type: Bug
> Components: Cluster/Membership
> Reporter: Svyatoslav Kushnarev
> Priority: Normal
>
> _*{{CQL}}*_ traffic during first cold start can fail _*TCM/CMS*_ election
> with empty {{{_}ReplicaGroups{_}.}}
> On first cold start, while Cassandra is still running _*TCM/CMS*_ election,
> concurrent client _*CQL*_ load can cause *_Paxos_* prepare failures against
> empty ownership metadata:
> {{_IllegalStateException: Could not find range for token -9223372036854775808
> in ReplicaGroups: ReplicaGroups{}_}}
> That failure then surfaces as *{{WriteFailureException}}* in
> *{{DistributedMetadataLogKeyspace}}* CAS, and TCM election fails so the node
> errors out.
> With no concurrent _*CQL*_ client traffic during cold start, the same
> _*Cassandra 6.0-alpha1*_ start completes successfully.
> h3. Steps to reproduce:
> # Start a fresh *_Cassandra 6.0-alpha1_* node/cluster (first CMS
> initialisation).
> # While it is still booting, repeatedly issue light *_CQL_* against the
> native port
> # Paxos prepare fails on empty {{{}ReplicaGroups{}{{}}}},
> {{DistributedMetadataLogKeyspace}} CAS fails, and first-CMS initialization /
> election aborts.
> {*}Error log below{*}:
> {code:java}
> INFO o.apache.cassandra.tcm.log.LocalLog Enacted PreInitialize. New tail is
> Epoch{epoch=1} ERROR o.a.c.s.paxos.PaxosRequestCallback Failed to apply
> Prepare(823cca62-596f-11f1-94a1-186780f5f064) locally
> java.lang.IllegalStateException: Could not find range for token
> -9223372036854775808 in ReplicaGroups: ReplicaGroups{} at
> org.apache.cassandra.tcm.ownership.ReplicaGroups.forRange(ReplicaGroups.java:150)
> at
> org.apache.cassandra.tcm.ownership.ReplicaGroups.forToken(ReplicaGroups.java:155)
> at
> org.apache.cassandra.locator.EndpointsForToken.natural(EndpointsForToken.java:167)
> at
> org.apache.cassandra.service.paxos.Paxos.isInRangeAndShouldProcess(Paxos.java:1181)
> at
> org.apache.cassandra.service.paxos.PaxosPrepare$RequestHandler.execute(PaxosPrepare.java:1120)
> at
> org.apache.cassandra.service.paxos.PaxosRequestCallback.executeOnSelf(PaxosRequestCallback.java:61)
> at
> org.apache.cassandra.service.paxos.PaxosPrepare.lambda$start$0(PaxosPrepare.java:429)
> at
> org.apache.cassandra.concurrent.ExecutionFailure$1.run(ExecutionFailure.java:138)
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:156) at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.base/java.lang.Thread.run(Thread.java:840) ERROR
> o.a.c.s.DistributedMetadataLogKeyspace Caught an exception while trying to
> CAS org.apache.cassandra.exceptions.WriteFailureException: Operation failed -
> received 0 responses and 1 failures: UNKNOWN from /100.29.27.6:7000 at
> org.apache.cassandra.service.paxos.Paxos$MaybeFailure.markAndThrowAsTimeoutOrFailure(Paxos.java:640)
> at org.apache.cassandra.service.paxos.Paxos.begin(Paxos.java:1150) at
> org.apache.cassandra.service.paxos.Paxos.cas(Paxos.java:734) at
> org.apache.cassandra.service.StorageProxy.cas(StorageProxy.java:393) at
> org.apache.cassandra.cql3.statements.ModificationStatement.executeWithCondition(ModificationStatement.java:700)
> at
> org.apache.cassandra.cql3.statements.ModificationStatement.execute(ModificationStatement.java:658)
> at org.apache.cassandra.cql3.QueryProcessor.execute(QueryProcessor.java:601)
> at org.apache.cassandra.cql3.QueryProcessor.execute(QueryProcessor.java:584)
> at
> org.apache.cassandra.schema.DistributedMetadataLogKeyspace.initialize(DistributedMetadataLogKeyspace.java:90)
> at
> org.apache.cassandra.schema.DistributedMetadataLogKeyspace.tryCommit(DistributedMetadataLogKeyspace.java:127)
> at
> org.apache.cassandra.tcm.PaxosBackedProcessor.tryCommitOne(PaxosBackedProcessor.java:69)
> at
> org.apache.cassandra.tcm.AbstractLocalProcessor.commit(AbstractLocalProcessor.java:99)
> at
> org.apache.cassandra.tcm.ClusterMetadataService$SwitchableProcessor.commit(ClusterMetadataService.java:973)
> at org.apache.cassandra.tcm.Processor.commit(Processor.java:50) at
> org.apache.cassandra.tcm.ClusterMetadataService.commit(ClusterMetadataService.java:613)
> at
> org.apache.cassandra.tcm.ClusterMetadataService.commit(ClusterMetadataService.java:578)
> at
> org.apache.cassandra.tcm.Startup.initializeAsFirstCMSNode(Startup.java:153)
> at org.apache.cassandra.tcm.migration.Election.finish(Election.java:139) at
> org.apache.cassandra.tcm.migration.Election.nominateSelf(Election.java:99) at
> org.apache.cassandra.tcm.Startup.initializeForDiscovery(Startup.java:239) at
> org.apache.cassandra.tcm.Startup.initialize(Startup.java:122) at
> org.apache.cassandra.tcm.Startup.initialize(Startup.java:97) at
> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:280)
> at
> org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:839)
> at
> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:993)
> ERROR o.a.c.s.paxos.PaxosRequestCallback Failed to apply
> Prepare(825d4ab2-596f-11f1-eb80-c8da9957f64b) locally
> java.lang.IllegalStateException: Could not find range for token
> -9223372036854775808 in ReplicaGroups: ReplicaGroups{} at
> org.apache.cassandra.tcm.ownership.ReplicaGroups.forRange(ReplicaGroups.java:150)
> at
> org.apache.cassandra.tcm.ownership.ReplicaGroups.forToken(ReplicaGroups.java:155)
> at
> org.apache.cassandra.locator.EndpointsForToken.natural(EndpointsForToken.java:167)
> at
> org.apache.cassandra.service.paxos.Paxos.isInRangeAndShouldProcess(Paxos.java:1181)
> at
> org.apache.cassandra.service.paxos.PaxosPrepare$RequestHandler.execute(PaxosPrepare.java:1120)
> at
> org.apache.cassandra.service.paxos.PaxosRequestCallback.executeOnSelf(PaxosRequestCallback.java:61)
> at
> org.apache.cassandra.service.paxos.PaxosPrepare.lambda$start$0(PaxosPrepare.java:429)
> at
> org.apache.cassandra.concurrent.ExecutionFailure$1.run(ExecutionFailure.java:138)at
> org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:156) at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)at
> java.base/java.lang.Thread.run(Thread.java:840) {code}
> h3. Expectations:
> External factors (client _*CQL*_ traffic during cold start) must not break
> bootstrap. Cassandra should tolerate concurrent client traffic during
> _*TCM/CMS*_ initialisation on cold start (especially _*CQL*_ hitting the
> native port early).
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