cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Shawn Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-5351) Avoid repairing already-repaired data by default
Date Tue, 03 Jun 2014 18:23:05 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shawn Kumar updated CASSANDRA-5351:
-----------------------------------

    Labels: qa-resolved repair  (was: repair)

> Avoid repairing already-repaired data by default
> ------------------------------------------------
>
>                 Key: CASSANDRA-5351
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5351
>             Project: Cassandra
>          Issue Type: Task
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Lyuben Todorov
>              Labels: qa-resolved, repair
>             Fix For: 2.1 beta1
>
>         Attachments: 0001-Incremental-repair-wip.patch, 0001-keep-repairedAt-time-when-scrubbing-and-no-bad-rows-.patch,
5351_node1.log, 5351_node2.log, 5351_node3.log, 5351_nodetool.log
>
>
> Repair has always built its merkle tree from all the data in a columnfamily, which is
guaranteed to work but is inefficient.
> We can improve this by remembering which sstables have already been successfully repaired,
and only repairing sstables new since the last repair.  (This automatically makes CASSANDRA-3362
much less of a problem too.)
> The tricky part is, compaction will (if not taught otherwise) mix repaired data together
with non-repaired.  So we should segregate unrepaired sstables from the repaired ones.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message