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https://issues.apache.org/jira/browse/CASSANDRA-13737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118103#comment-16118103
 ] 

ASF GitHub Bot commented on CASSANDRA-13737:
--------------------------------------------

Github user adelapena closed the pull request at:

    https://github.com/apache/cassandra-dtest/pull/4


> Node start can fail if the base table of a materialized view is not found
> -------------------------------------------------------------------------
>
>                 Key: CASSANDRA-13737
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13737
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Distributed Metadata, Materialized Views
>            Reporter: Andrés de la Peña
>            Assignee: Andrés de la Peña
>             Fix For: 3.0.x, 3.11.x, 4.x
>
>
> Node start can fail if the base table of a materialized view is not found, 
> which is something that can happen under certain circumstances. There is a 
> dtest reproducing the problem:
> {code}
> cluster = self.cluster
> cluster.populate(3)
> cluster.start()
> node1, node2, node3 = self.cluster.nodelist()
> session = self.patient_cql_connection(node1, 
> consistency_level=ConsistencyLevel.QUORUM)
> create_ks(session, 'ks', 3)
> session.execute('CREATE TABLE users (username varchar PRIMARY KEY, state 
> varchar)')
> node3.stop(wait_other_notice=True)
> # create a materialized view only in nodes 1 and 2
> session.execute(('CREATE MATERIALIZED VIEW users_by_state AS '
>                  'SELECT * FROM users WHERE state IS NOT NULL AND username IS 
> NOT NULL '
>                  'PRIMARY KEY (state, username)'))
> node1.stop(wait_other_notice=True)
> node2.stop(wait_other_notice=True)
> # drop the base table only in node 3
> node3.start(wait_for_binary_proto=True)
> session = self.patient_cql_connection(node3, 
> consistency_level=ConsistencyLevel.QUORUM)
> session.execute('DROP TABLE ks.users')
> cluster.stop()
> cluster.start()  # Fails
> {code}
> This is the error during node start:
> {code}
> java.lang.IllegalArgumentException: Unknown CF 
> 958ebc30-76e4-11e7-869a-9d8367a71c76
>       at 
> org.apache.cassandra.db.Keyspace.getColumnFamilyStore(Keyspace.java:215) 
> ~[main/:na]
>       at 
> org.apache.cassandra.db.view.ViewManager.addView(ViewManager.java:143) 
> ~[main/:na]
>       at 
> org.apache.cassandra.db.view.ViewManager.reload(ViewManager.java:113) 
> ~[main/:na]
>       at org.apache.cassandra.schema.Schema.alterKeyspace(Schema.java:618) 
> ~[main/:na]
>       at org.apache.cassandra.schema.Schema.lambda$merge$18(Schema.java:591) 
> ~[main/:na]
>       at 
> java.util.Collections$UnmodifiableMap$UnmodifiableEntrySet.lambda$entryConsumer$0(Collections.java:1575)
>  ~[na:1.8.0_131]
>       at java.util.HashMap$EntrySet.forEach(HashMap.java:1043) ~[na:1.8.0_131]
>       at 
> java.util.Collections$UnmodifiableMap$UnmodifiableEntrySet.forEach(Collections.java:1580)
>  ~[na:1.8.0_131]
>       at org.apache.cassandra.schema.Schema.merge(Schema.java:591) ~[main/:na]
>       at 
> org.apache.cassandra.schema.Schema.mergeAndAnnounceVersion(Schema.java:564) 
> ~[main/:na]
>       at 
> org.apache.cassandra.schema.MigrationTask$1.response(MigrationTask.java:89) 
> ~[main/:na]
>       at 
> org.apache.cassandra.net.ResponseVerbHandler.doVerb(ResponseVerbHandler.java:53)
>  ~[main/:na]
>       at 
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72) 
> ~[main/:na]
>       at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> ~[na:1.8.0_131]
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
> ~[na:1.8.0_131]
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  ~[na:1.8.0_131]
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  [na:1.8.0_131]
>       at 
> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:81)
>  [main/:na]
>       at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_131]
> {code}



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