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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-919) delay file garbage collection to survive name node failure
Date Fri, 11 Jan 2013 18:10:13 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13551333#comment-13551333
] 

Hudson commented on ACCUMULO-919:
---------------------------------

Integrated in Accumulo-Trunk #629 (See [https://builds.apache.org/job/Accumulo-Trunk/629/])
    ACCUMULO-919 moveToTrash throws an exception if the file does not exists, which is different
than the way delete behaves (Revision 1432173)

     Result = SUCCESS
ecn : 
Files : 
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/gc/SimpleGarbageCollector.java

                
> delay file garbage collection to survive name node failure
> ----------------------------------------------------------
>
>                 Key: ACCUMULO-919
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-919
>             Project: Accumulo
>          Issue Type: Bug
>          Components: gc
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>            Priority: Blocker
>             Fix For: 1.5.0
>
>
> Consider the catastrophic loss of the namenode.
> Assuming you have a previous snapshot, you can recover the namenode using another node
back to that snapshot.
> However, the most recently deleted files will show as corrupt, because the slightly older
state will point to blocks that are now gone.
> If the gc delayed file collection for a period of time longer than the age of a snapshot,
accumulo could be recovered with the snapshot.

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