cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-5351) Avoid repairing already-repaired data by default
Date Thu, 02 Jan 2014 15:03:18 GMT

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

Jonathan Ellis updated CASSANDRA-5351:
--------------------------------------

    Reviewer: Marcus Eriksson  (was: Sylvain Lebresne)

> 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: repair
>             Fix For: 2.1
>
>         Attachments: node1.log, node1_v2_full.log, node2.log, node2_v2_full.log, node3.log,
node3_v2_full.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
(v6.1.5#6160)

Mime
View raw message