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From "Flavio Paiva Junqueira (JIRA)" <j...@apache.org>
Subject [jira] Commented: (ZOOKEEPER-464) Need procedure to garbage collect ledgers
Date Mon, 26 Apr 2010 16:07:31 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12860970#action_12860970
] 

Flavio Paiva Junqueira commented on ZOOKEEPER-464:
--------------------------------------------------

Hi Erwin, Sorry about the delay to review it. I think this patch is pretty much ready to get
in. I have just a couple of tiny requests:

# I noticed that the two commands you modified in the documentation (bookkeeperStated.xml
and bookkeeperConfig.xml) are going over the paper margin for the generated pdfs. Could you
please break up the lines?
# In LedgerDeleteTest, you're using "//" for multi-line comments. I believe we have been using
"/**/" instead. This is just to keep it consistent with comments in other parts of the code.

Otherwise, it looks good.  If you fix these two things, then I think we will be able to get
it in shortly after.

> 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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