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From "Joel Knighton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10231) Null status entries on nodes that crash during decommission of a different node
Date Mon, 12 Oct 2015 03:31:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14952575#comment-14952575
] 

Joel Knighton commented on CASSANDRA-10231:
-------------------------------------------

Thanks, Stefania.

I've pushed a branch with your one nit fixed; I missed that.

Patch available as the latest commit on branch [10231-3.0-notest|https://github.com/jkni/cassandra/commits/10231-3.0-notest].

> Null status entries on nodes that crash during decommission of a different node
> -------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10231
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10231
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Joel Knighton
>            Assignee: Joel Knighton
>             Fix For: 3.0.0 rc2
>
>         Attachments: n1.log, n2.log, n3.log, n4.log, n5.log
>
>
> This issue is reproducible through a Jepsen test of materialized views that crashes and
decommissions nodes throughout the test.
> In a 5 node cluster, if a node crashes at a certain point (unknown) during the decommission
of a different node, it may start with a null entry for the decommissioned node like so:
> DN 10.0.0.5 ? 256 ? null rack1
> This entry does not get updated/cleared by gossip. This entry is removed upon a restart
of the affected node.
> This issue is further detailed in ticket [10068|https://issues.apache.org/jira/browse/CASSANDRA-10068].



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