cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jun Rao (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-640) Repair should never reuse a tree
Date Fri, 18 Dec 2009 18:28:18 GMT


Jun Rao commented on CASSANDRA-640:

The patch looks reasonable to me.

> Repair should never reuse a tree
> --------------------------------
>                 Key: CASSANDRA-640
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.5
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>             Fix For: 0.5
>         Attachments: 640-one-use-tree-and-repair-frequency.diff
> AEService currently 'caches' MerkleTrees that have been generated by the local node,
and can respond to a request for a tree with a cached version. This means that despite possibly
having performed a repair, the two nodes will still be holding cached trees, and can respond
to one another with the cached version, resulting in redundant repairs.
> Rather than a cache, the map of trees is intended to be a rendezvous point for two nodes
to exchange relatively up-to-date trees. A map still might work, but other synchronization
objects should be explored.

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

View raw message