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From "Benedict (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8399) Reference Counter exception when dropping user type
Date Fri, 02 Jan 2015 21:59:35 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8399?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14263265#comment-14263265
] 

Benedict commented on CASSANDRA-8399:
-------------------------------------

Sure. I'll take a look soon.

> Reference Counter exception when dropping user type
> ---------------------------------------------------
>
>                 Key: CASSANDRA-8399
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8399
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Philip Thompson
>            Assignee: Joshua McKenzie
>             Fix For: 2.1.3
>
>         Attachments: 8399_fix_empty_results.txt, 8399_v2.txt, node2.log, ubuntu-8399.log
>
>
> When running the dtest {{user_types_test.py:TestUserTypes.test_type_keyspace_permission_isolation}}
with the current 2.1-HEAD code, very frequently, but not always, when dropping a type, the
following exception is seen:{code}
> ERROR [MigrationStage:1] 2014-12-01 13:54:54,824 CassandraDaemon.java:170 - Exception
in thread Thread[MigrationStage:1,5,main]
> java.lang.AssertionError: Reference counter -1 for /var/folders/v3/z4wf_34n1q506_xjdy49gb780000gn/T/dtest-eW2RXj/test/node2/data/system/schema_keyspaces-b0f2235744583cdb9631c43e59ce3676/system-sche
> ma_keyspaces-ka-14-Data.db
>         at org.apache.cassandra.io.sstable.SSTableReader.releaseReference(SSTableReader.java:1662)
~[main/:na]
>         at org.apache.cassandra.io.sstable.SSTableScanner.close(SSTableScanner.java:164)
~[main/:na]
>         at org.apache.cassandra.utils.MergeIterator.close(MergeIterator.java:62) ~[main/:na]
>         at org.apache.cassandra.db.ColumnFamilyStore$8.close(ColumnFamilyStore.java:1943)
~[main/:na]
>         at org.apache.cassandra.db.ColumnFamilyStore.filter(ColumnFamilyStore.java:2116)
~[main/:na]
>         at org.apache.cassandra.db.ColumnFamilyStore.getRangeSlice(ColumnFamilyStore.java:2029)
~[main/:na]
>         at org.apache.cassandra.db.ColumnFamilyStore.getRangeSlice(ColumnFamilyStore.java:1963)
~[main/:na]
>         at org.apache.cassandra.db.SystemKeyspace.serializedSchema(SystemKeyspace.java:744)
~[main/:na]
>         at org.apache.cassandra.db.SystemKeyspace.serializedSchema(SystemKeyspace.java:731)
~[main/:na]
>         at org.apache.cassandra.config.Schema.updateVersion(Schema.java:374) ~[main/:na]
>         at org.apache.cassandra.config.Schema.updateVersionAndAnnounce(Schema.java:399)
~[main/:na]
>         at org.apache.cassandra.db.DefsTables.mergeSchema(DefsTables.java:167) ~[main/:na]
>         at org.apache.cassandra.db.DefinitionsUpdateVerbHandler$1.runMayThrow(DefinitionsUpdateVerbHandler.java:49)
~[main/:na]
>         at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[main/:na]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) ~[na:1.7.0_67]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262) ~[na:1.7.0_67]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_67]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[na:1.7.0_67]
>         at java.lang.Thread.run(Thread.java:745) [na:1.7.0_67]{code}
> Log of the node with the error is attached.



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