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Date: Fri, 21 Sep 2012 06:43:08 +1100 (NCT)
From: "Suresh Srinivas (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <22356839.104376.1348170188774.JavaMail.jiratomcat@arcas>
Subject: [jira] [Updated] (HDFS-3961) FSEditLog preallocate() needs to reset
 the position of PREALLOCATE_BUFFER when more than 1MB size is needed
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     [ https://issues.apache.org/jira/browse/HDFS-3961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Suresh Srinivas updated HDFS-3961:
----------------------------------

    Affects Version/s:     (was: 1.2.0)
                       1.1.0
    
> FSEditLog preallocate() needs to reset the position of PREALLOCATE_BUFFER when more than 1MB size is needed
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3961
>                 URL: https://issues.apache.org/jira/browse/HDFS-3961
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Jing Zhao
>         Attachments: HDFS-3961.patch
>
>
> In the new preallocate() function, when the required size is larger 1MB, we need to reset the position for PREALLOCATION_BUFFER every time when we have allocated 1MB. Otherwise seems only 1MB can be allocated even if need is larger than 1MB.

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