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From "Oleg Anastasyev (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (CASSANDRA-6862) Schema versions mismatch on large ring
Date Fri, 14 Mar 2014 23:50:43 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-6862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Oleg Anastasyev updated CASSANDRA-6862:
---------------------------------------

    Comment: was deleted

(was: LGTM. Oh those range tombstones, everybody forget about them...;-)
)

> 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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