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From "Erwin Tam (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-464) Need procedure to garbage collect ledgers
Date Thu, 08 Apr 2010 21:20:36 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12855158#action_12855158
] 

Erwin Tam commented on ZOOKEEPER-464:
-------------------------------------

Flavio, my comments a couple of entries above talks about the EntryLogger's "BKLO" header
that was causing the problem.  That was creating the issue in the junit test making it fail
intermittently.  I sent you and Ben an email about this fix too in more detail but we could
talk about it more if you want. Thanks!

> Need procedure to garbage collect ledgers
> -----------------------------------------
>
>                 Key: ZOOKEEPER-464
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-464
>             Project: Zookeeper
>          Issue Type: New Feature
>          Components: contrib-bookkeeper
>            Reporter: Flavio Paiva Junqueira
>            Assignee: Erwin Tam
>             Fix For: 3.4.0
>
>         Attachments: zookeeper-464-log.txt, ZOOKEEPER-464.patch, ZOOKEEPER-464.patch,
ZOOKEEPER-464.patch
>
>
> An application using BookKeeper is likely to use a large number of ledgers over time.
Such an application might not need all ledgers created over time and might want to delete
some of these ledgers to free up some space on bookies. The idea of this jira is to implement
a procedure that enables an application to garbage-collect unwanted ledgers.
> To garbage-collect a ledger, we need to delete the ledger metadata on ZooKeeper, and
delete the ledger data on corresponding bookies. 

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