Alan Boudreault created CASSANDRA-15680:
-------------------------------------------
Summary: Transient Replication: java.lang.AssertionError null
error
Key: CASSANDRA-15680
URL: https://issues.apache.org/jira/browse/CASSANDRA-15680
Project: Cassandra
Issue Type: Bug
Components: Feature/Transient Replication
Reporter: Alan Boudreault
Attachments: debug.log
This bug happens randomly. It seems that for some reason,
_Replicas.ReplicaCount.allReplicas()_ or _Replicas.ReplicaCount.fullReplicas()_
can be *null* instead of *0* ?
stacktrace:
{code}
ERROR [Native-Transport-Requests-1] 2020-04-01 12:00:20,024 Message.java:874 -
Unexpected exception during request; channel = [id: 0x9891b4c8,
L:/127.0.0.1:9042 - R:/127.0.0.1:48542]
java.lang.AssertionError: null
at
org.apache.cassandra.exceptions.UnavailableException.create(UnavailableException.java:38)
at
org.apache.cassandra.locator.ReplicaPlans.assureSufficientLiveReplicas(ReplicaPlans.java:126)
at
org.apache.cassandra.locator.ReplicaPlans.assureSufficientLiveReplicasForRead(ReplicaPlans.java:109)
at
org.apache.cassandra.locator.ReplicaPlans.forRead(ReplicaPlans.java:593)
at
org.apache.cassandra.service.reads.AbstractReadExecutor.getReadExecutor(AbstractReadExecutor.java:191)
at
org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:1798)
at
org.apache.cassandra.service.StorageProxy.readRegular(StorageProxy.java:1709)
at
org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:1626)
at
org.apache.cassandra.db.SinglePartitionReadCommand.execute(SinglePartitionReadCommand.java:382)
at
org.apache.cassandra.service.pager.AbstractQueryPager.fetchPage(AbstractQueryPager.java:69)
at
org.apache.cassandra.service.pager.SinglePartitionPager.fetchPage(SinglePartitionPager.java:32)
at
org.apache.cassandra.cql3.statements.SelectStatement$Pager$NormalPager.fetchPage(SelectStatement.java:352)
at
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:400)
at
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:250)
at
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:88)
at
org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:216)
at
org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:489)
at
org.apache.cassandra.cql3.QueryProcessor.processPrepared(QueryProcessor.java:467)
at
org.apache.cassandra.cql3.CustomPayloadMirroringQueryHandler.processPrepared(CustomPayloadMirroringQueryHandler.java:67)
at
org.apache.cassandra.transport.messages.ExecuteMessage.execute(ExecuteMessage.java:140)
at
org.apache.cassandra.transport.Message$Request.execute(Message.java:253)
at
org.apache.cassandra.transport.Message$Dispatcher.processRequest(Message.java:725)
at
org.apache.cassandra.transport.Message$Dispatcher.lambda$channelRead0$0(Message.java:630)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:165)
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:119)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)
{code}
I can reproduce relativity easily with this python driver test (1 out of 5
runs):
https://github.com/datastax/python-driver/blob/master/tests/integration/long/test_loadbalancingpolicies.py#L622
This was tested with 4.0-alpha3 and trunk. I can help to debug if needed.
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