[
https://issues.apache.org/jira/browse/CASSANDRA-981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869458#action_12869458
]
Vijay commented on CASSANDRA-981:
---------------------------------
Things can get complicated when there is a network outage and the network being
smart trys to re-roue the traffic in the more expensive route, in which case
the whole equation changes.... I am not sure if this sorting has to be done
only once when the node comes up? even then we dont know if during
bootstrapping there was a network outage.....
> Dynamic endpoint snitch
> -----------------------
>
> Key: CASSANDRA-981
> URL: https://issues.apache.org/jira/browse/CASSANDRA-981
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Jonathan Ellis
> Fix For: 0.7
>
>
> An endpoint snitch that automatically and dynamically infers "distance" to
> other machines without having to explicitly configure rack and datacenter
> positions solves two problems:
> The killer feature here is adapting to things like compaction or a
> failing-but-not-yet-dead disk. This is important, since when we are doing
> reads we pick the "closest" replica for actually reading data from (and only
> read md5s from other replicas). This means that if the closest replica by
> network topology is temporarily slow due to compaction (for instance), we'll
> have to block for its reply even if we get the other replies much much faster.
> Not having to manually re-sync your configuration with your network topology
> when changes (adding machines) are made is a nice bonus.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
