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From "Rakesh R (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3810) Implement format() for BKJM
Date Thu, 23 Aug 2012 06:58:42 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440088#comment-13440088

Rakesh R commented on HDFS-3810:

Looks good apart from the following thoughts.
- Better, would use org.apache.zookeeper.ZKUtil.deleteRecursive(ZooKeeper zk, final String
pathRoot) for deleting zkc.getChildren(basePath, false); instead of iterating through children
- BTW, I was thinking about the concurrent/consecutive NN formatting. Its good to have one
testcase showing concurrent/consecutive formatting behaviour. Here one would success and other
would get exception. I mean the testcase can show even after the exception, BKJM should continue
without any problem.

> Implement format() for BKJM
> ---------------------------
>                 Key: HDFS-3810
>                 URL: https://issues.apache.org/jira/browse/HDFS-3810
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: 3.0.0
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>         Attachments: HDFS-3810.diff
> At the moment, formatting for BKJM is done on initialization. Reinitializing is a manual
process. This JIRA is to implement the JournalManager#format API, so that BKJM can be formatting
along with all other storage methods.

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