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Date: Thu, 11 Oct 2012 23:11:03 +0000 (UTC)
From: "Aaron T. Myers (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Updated] (HDFS-2946) HA: Put a cap on the number of
 completed edits files retained by the NN
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     [ https://issues.apache.org/jira/browse/HDFS-2946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aaron T. Myers updated HDFS-2946:
---------------------------------

    Attachment: HDFS-2946.patch

Thanks a lot for the review, Eli. Here's an updated patch which should address your feedback.

I also changed the assert to instead throw an IOE, because I think that this error is important enough that it shouldn't require asserts be enabled to stop it.
                
> HA: Put a cap on the number of completed edits files retained by the NN
> -----------------------------------------------------------------------
>
>                 Key: HDFS-2946
>                 URL: https://issues.apache.org/jira/browse/HDFS-2946
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: ha, name-node
>    Affects Versions: 2.0.1-alpha
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: HDFS-2946.patch, HDFS-2946.patch
>
>
> HDFS-2794 added a minimum number of transactions to retain in edits files. Since many underlying file systems put a cap on the number of entries in a single directory, we should put a cap on the number of edits files which will be retained by the NN.

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