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https://issues.apache.org/jira/browse/CASSANDRA-13346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15942114#comment-15942114
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Jeremy Hanna edited comment on CASSANDRA-13346 at 3/26/17 3:23 AM:
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Is there any context around this? Were you doing any other schema modification
at the time? Also was there any other effect other than this error in the logs?
was (Author: jeromatron):
Is there any context around this? Were you doing any other schema modification
at the time?
> Failed unregistering mbean during drop keyspace
> -----------------------------------------------
>
> Key: CASSANDRA-13346
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13346
> Project: Cassandra
> Issue Type: Bug
> Environment: Cassandra 3.9
> Reporter: Gábor Auth
> Priority: Minor
> Labels: lhf
>
> All node throw exceptions about materialized views during drop keyspace:
> {code}
> WARN [MigrationStage:1] 2017-03-16 16:54:25,016 ColumnFamilyStore.java:535 -
> Failed unregistering mbean:
> org.apache.cassandra.db:type=Tables,keyspace=test20160810,table=unit_by_account
> java.lang.NullPointerException: null
> at
> java.util.concurrent.ConcurrentHashMap.replaceNode(ConcurrentHashMap.java:1106)
> ~[na:1.8.0_121]
> at
> java.util.concurrent.ConcurrentHashMap.remove(ConcurrentHashMap.java:1097)
> ~[na:1.8.0_121]
> at
> java.util.concurrent.ConcurrentHashMap$KeySetView.remove(ConcurrentHashMap.java:4569)
> ~[na:1.8.0_121]
> at
> org.apache.cassandra.metrics.TableMetrics.release(TableMetrics.java:712)
> ~[apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.db.ColumnFamilyStore.unregisterMBean(ColumnFamilyStore.java:570)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.db.ColumnFamilyStore.invalidate(ColumnFamilyStore.java:527)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.db.ColumnFamilyStore.invalidate(ColumnFamilyStore.java:517)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at org.apache.cassandra.db.Keyspace.unloadCf(Keyspace.java:365)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at org.apache.cassandra.db.Keyspace.dropCf(Keyspace.java:358)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at org.apache.cassandra.config.Schema.dropView(Schema.java:744)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.schema.SchemaKeyspace.lambda$mergeSchema$373(SchemaKeyspace.java:1287)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_121]
> at
> org.apache.cassandra.schema.SchemaKeyspace.mergeSchema(SchemaKeyspace.java:1287)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.schema.SchemaKeyspace.mergeSchemaAndAnnounceVersion(SchemaKeyspace.java:1256)
> [apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.db.DefinitionsUpdateVerbHandler$1.runMayThrow(DefinitionsUpdateVerbHandler.java:51)
> ~[apache-cassandra-3.9.0.jar:3.9.0]
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> ~[apache-cassandra-3.9.0.jar:3.9.0]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_121]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> ~[na:1.8.0_121]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ~[na:1.8.0_121]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> ~[na:1.8.0_121]
> at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_121]
> {code}
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