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Posted to hdfs-issues@hadoop.apache.org by "Jing Zhao (JIRA)" <ji...@apache.org> on 2012/09/20 20:32:09 UTC

[jira] [Updated] (HDFS-3961) FSEditLog preallocate() needs to reset the position of PREALLOCATE_BUFFER when more than 1MB size is needed

     [ https://issues.apache.org/jira/browse/HDFS-3961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jing Zhao updated HDFS-3961:
----------------------------

    Priority: Major  (was: Critical)
    
> 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: 1.2.0
>            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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