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https://issues.apache.org/jira/browse/CASSANDRA-3884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205571#comment-13205571
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Tyler Patterson commented on CASSANDRA-3884:
--------------------------------------------
I found another problem that might be related. When I drop and re-create a
column family while that column family is being compacted, I sometimes see the
following error in the logs:
{% code %}
ERROR [NonPeriodicTasks:1] 2012-02-10 00:32:27,773 SSTableDeletingTask.java
(line 76) Unable to delete
/tmp/dtest-l4IQpd/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-73-Data.db
(it will be removed on server restart; we'll also retry after GC)
INFO [CompactionExecutor:4] 2012-02-10 00:32:27,774 CompactionTask.java (line
226) Compacted to
[/tmp/dtest-l4IQpd/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-82-Data.db,].
94,406,208 to 11,542,817 (~12% of original) bytes for 302,584 keys at
1.436150MB/s. Time: 7,665ms.
ERROR [NonPeriodicTasks:1] 2012-02-10 00:32:27,774 SSTableDeletingTask.java
(line 76) Unable to delete
/tmp/dtest-l4IQpd/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-69-Data.db
(it will be removed on server restart; we'll also retry after GC)
ERROR [NonPeriodicTasks:1] 2012-02-10 00:32:27,778 SSTableDeletingTask.java
(line 76) Unable to delete
/tmp/dtest-l4IQpd/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-80-Data.db
(it will be removed on server restart; we'll also retry after GC)
ERROR [NonPeriodicTasks:1] 2012-02-10 00:32:27,779 SSTableDeletingTask.java
(line 76) Unable to delete
/tmp/dtest-l4IQpd/test/node1/data/Keyspace1/Standard1/Keyspace1-Standard1-hc-79-Data.db
(it will be removed on server restart; we'll also retry after GC)
{% code %}
failing_tests/change_schema_under_load.py
> Intermittent SchemaDisagreementException
> ----------------------------------------
>
> Key: CASSANDRA-3884
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3884
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.0
> Environment: using ccm on ubuntu.
> Reporter: Tyler Patterson
>
> Set up a cluster of two nodes (on cassandra-1.1), create some keyspaces and
> column families, and then make several schema changes. Everything is being
> done through only one of the nodes. About once every 10 times (on my setup)
> I get a SchemaDisagreementException when creating and dropping keyspaces.
> There is a dtest for this: schema_changes_test.py. If your environment
> behaves like mine, you might need to run it 10 times to get the error.
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