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From "Tyler Hobbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8373) MOVED_NODE Topology Change event is never emitted
Date Fri, 19 Dec 2014 00:36:13 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14252650#comment-14252650
] 

Tyler Hobbs commented on CASSANDRA-8373:
----------------------------------------

I looked into the single-node problem briefly and it wasn't clear how to fix things.  {{updateNormalTokens()}}
gets called frequently, which has the effect of removing nodes from the "moving" set.  Since
a single node moving isn't a terribly important case, I think it's worth committing what we
have and splitting that out.  I've opened CASSANDRA-8516 and assigned it to [~brandon.williams]
to take a look at.

> MOVED_NODE Topology Change event is never emitted
> -------------------------------------------------
>
>                 Key: CASSANDRA-8373
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8373
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Adam Holmberg
>            Priority: Minor
>             Fix For: 2.0.12, 2.1.3
>
>         Attachments: 8373.txt
>
>
> lifeCycleSubscribers.onMove never gets called because [this tokenMetadata.updateNormalTokens|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/service/StorageService.java#L1585]
call [changes the endpoint moving status|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/locator/TokenMetadata.java#L190],
making the later isMoving conditional always false.



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