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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1518) remember ring state between restarts
Date Sat, 18 Sep 2010 21:51:33 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12911100#action_12911100
] 

Brandon Williams commented on CASSANDRA-1518:
---------------------------------------------

I think Jonathan is just proposing that we enhance the token tracking we already perform.
 State is never stored, that is the FailureDetector's job to determine on startup.

> remember ring state between restarts
> ------------------------------------
>
>                 Key: CASSANDRA-1518
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1518
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Brandon Williams
>             Fix For: 0.7.0
>
>
> default behavior should be to remember the nodes we've seen before.  we're already storing
ip/token pairs in systemtable, but we're not removing them when removetoken is issued.
> we probably want to leave some trace of nodes-that-used-to-participate-but-were-removed,
but instead of having a historical track in systemtable let's just add something to the gossip
listener in StorageService that logs token when a node comes up.
> finally, there should be a flag (-D?  config?) for bringing up a node in don't-assume-anything-about-the-ring
mode as a fallback in case we run into more funky token-related bugs.

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