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Date: Tue, 28 Aug 2012 06:46:07 +1100 (NCT)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <1762099230.2902.1346096767805.JavaMail.jiratomcat@arcas>
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Subject: [jira] [Updated] (HDFS-3845) Fixes for edge cases in QJM recovery
 protocol
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     [ https://issues.apache.org/jira/browse/HDFS-3845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon updated HDFS-3845:
------------------------------

    Attachment: hdfs-3845.txt

Here's the same patch with just a bit more spit and polish (eg added some javadoc, cleaned up a few comments, and removed some spurious whitespace changes). Functionally identical. I verified that all of the QJM test cases pass.
                
> Fixes for edge cases in QJM recovery protocol
> ---------------------------------------------
>
>                 Key: HDFS-3845
>                 URL: https://issues.apache.org/jira/browse/HDFS-3845
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: QuorumJournalManager (HDFS-3077)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>         Attachments: hdfs-3845.txt, hdfs-3845.txt, hdfs-3845.txt
>
>
> After running the randomized tests from HDFS-3800 for several machine-weeks, we identified a few edge cases in the recovery protocol that weren't properly designed for. This JIRA is to modify the protocol slightly to address these edge cases.

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