[jira] [Updated] (CASSANDRA-3884) Intermittent SchemaDisagreementException

["Pavel Yaskevich (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-3884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pavel Yaskevich updated CASSANDRA-3884:
---------------------------------------

    Attachment: CASSANDRA-3884.patch

I have localized and fixed the problem which was that coordinator wasn't sending the mutations used to change schema but a snapshot of the schema itself after each of the migrations.
                
> 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
>            Assignee: Pavel Yaskevich
>             Fix For: 1.1.0
>
>         Attachments: CASSANDRA-3884.patch
>
>
> 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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