cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jaakko Laine (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-673) bootstrapping does not work properly using multiple key space
Date Fri, 15 Jan 2010 13:25:54 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12800690#action_12800690
] 

Jaakko Laine commented on CASSANDRA-673:
----------------------------------------

System table should probably not be included in the transfer?


> bootstrapping does not work properly using multiple key space
> -------------------------------------------------------------
>
>                 Key: CASSANDRA-673
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-673
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: 1.	cluster has at least one empty key-space
> 2.	one node be added into cluster to do bootstrap
>            Reporter: Michael Lee
>            Assignee: Jaakko Laine
>            Priority: Minor
>             Fix For: 0.5
>
>         Attachments: 0001-keep-track-of-table-and-node-while-bootstrapping.patch
>
>
> when use multiple key-spaces, and one key-space has no SSTable, then bootstrap may not
work right.
> Say nodes A, B, C, D have key spaces "KS1" and "KS2", KS1 is empty, now add empty node
E into cluster.
> Suppose E decide to drag data from A and B(bootstrap source), E will send range to A
and B, and A, B will scan all key-spaces they got and send ack to E, which contains list of
key-space name(StreamContextManager.StreamContext),
> when E get ack from A and B, it scan this list, but when encounter first empty key-space,
it will stop and remove node from bootstrap sources list:
> StreamInitiateVerbHandler.doVerb:
> ......
>                 if (streamContexts.length == 0 && StorageService.instance().isBootstrapMode())
>                 {
>                     if (logger.isDebugEnabled())
>                         logger.debug("no data needed from " + message.getFrom());
>                     StorageService.instance().removeBootstrapSource(message.getFrom());
>                     return;
>                 }
> ......
> If list of bootstrap sources is empty, E will finish bootstrapping
> So, the result is: E get nothing from source A, B, even KS2 has lots of data.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message