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From "Chip Salzenberg (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1674) Repair using abnormally large amounts of disk space
Date Wed, 17 Nov 2010 02:37:14 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12932787#action_12932787
] 

Chip Salzenberg commented on CASSANDRA-1674:
--------------------------------------------

Surely something that can overflow disks, even when below 50% usage, is worthy of fix before
0.7.0 is released...

> Repair using abnormally large amounts of disk space
> ---------------------------------------------------
>
>                 Key: CASSANDRA-1674
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1674
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Stu Hood
>             Fix For: 0.7.1
>
>         Attachments: 0001-Only-repair-the-intersecting-portion-of-a-differing-ra.txt
>
>
> I'm watching a repair on a 7 node cluster.  Repair was sent to one node; the node had
18G of data.  No other node has more than 28G.  The node where the repair initiated is now
up to 261G with 53/60 AES tasks outstanding.
> I have seen repair take more space than expected on 0.6 but nothing this extreme.
> Other nodes in the cluster are occasionally logging
> WARN [ScheduledTasks:1] 2010-10-28 08:31:14,305 MessagingService.java (line 515) Dropped
7 messages in the last 1000ms
> The cluster is quiesced except for the repair.  Not sure if the dropped messages are
contributing the the disk space (b/c of retries?).

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