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https://issues.apache.org/jira/browse/CASSANDRA-6862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14195265#comment-14195265
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Aleksey Yeschenko commented on CASSANDRA-6862:
----------------------------------------------

One of us is, because I've lost the thread.

What do you think the current issue is, under what circumstances does it 
happen, and why?

> Schema versions mismatch on large ring
> --------------------------------------
>
>                 Key: CASSANDRA-6862
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6862
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: 2.0
>            Reporter: Oleg Anastasyev
>            Assignee: Oleg Anastasyev
>             Fix For: 2.0.7
>
>         Attachments: 6862-v2.txt, SchemaVersionLiveColumns.txt
>
>
> We have a large cluster with several hundreds nodes in 1 ring. Sometimes, 
> especially after massive restarts, schema versions reported on different 
> nodes mismatch.
> Investigated and found, that difference is not in schema itsself, but in 
> thombstones (different nodes have different set of thombstones applied to 
> system tables).
> Fixed by digesting schema with thombstones removed first.



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