schema IAE and read path NPE after cluster re-deploy
----------------------------------------------------
Key: CASSANDRA-3932
URL: https://issues.apache.org/jira/browse/CASSANDRA-3932
Project: Cassandra
Issue Type: Bug
Components: Core
Reporter: Peter Schuller
Assignee: Peter Schuller
Fix For: 1.1.0
On the same cluster (but later) as the one where we observed CASSANDRA-3931 we
were running some performance/latency testing. ycsb reads, plus a separate
little python client. All was fine.
I then did a fast re-deploy for changed GC settings, which would have let to a
complete cluster restart almost simultaneously (triggering races?). When I
re-ran my Python client, I suddenly got an error saying Keyspace1 did not
exist. On re-run I started getting timeouts. Looking at the endpoints of the
key that I was getting a timeout for, the first error ever seen is:
{code}
java.lang.IllegalArgumentException: Unknown ColumnFamily Standard1 in keyspace
Keyspace1
at org.apache.cassandra.config.Schema.getComparator(Schema.java:234)
at
org.apache.cassandra.db.ColumnFamily.getComparatorFor(ColumnFamily.java:312)
at
org.apache.cassandra.db.ReadCommand.getComparator(ReadCommand.java:94)
at
org.apache.cassandra.db.SliceByNamesReadCommand.<init>(SliceByNamesReadCommand.java:44)
at
org.apache.cassandra.db.SliceByNamesReadCommandSerializer.deserialize(SliceByNamesReadCommand.java:113)
at
org.apache.cassandra.db.SliceByNamesReadCommandSerializer.deserialize(SliceByNamesReadCommand.java:81)
at
org.apache.cassandra.db.ReadCommandSerializer.deserialize(ReadCommand.java:134)
at
org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:53)
at
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:59)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
{code}
And later in the read path NPE:s like these:
{code}
java.lang.NullPointerException
at
org.apache.cassandra.db.Table.createReplicationStrategy(Table.java:321)
at org.apache.cassandra.db.Table.<init>(Table.java:277)
at org.apache.cassandra.db.Table.open(Table.java:120)
at org.apache.cassandra.db.Table.open(Table.java:103)
at
org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:54)
at
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:59)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
{code}
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