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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9308) Add truncateMeta() and deleteMeta() to MiniDFSCluster
Date Tue, 03 Nov 2015 02:08:27 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Lei (Eddy) Xu updated HDFS-9308:
       Resolution: Fixed
    Fix Version/s: 2.8.0
           Status: Resolved  (was: Patch Available)

Thanks a lot for woking on this, [~twu]

Committed to {{trunk}} and {{branch-2}}.

> Add truncateMeta() and deleteMeta() to MiniDFSCluster
> -----------------------------------------------------
>                 Key: HDFS-9308
>                 URL: https://issues.apache.org/jira/browse/HDFS-9308
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: HDFS, test
>    Affects Versions: 2.7.1
>            Reporter: Tony Wu
>            Assignee: Tony Wu
>            Priority: Minor
>             Fix For: 3.0.0, 2.8.0
>         Attachments: HDFS-9308.001.patch, HDFS-9308.002.patch, HDFS-9308.003.patch
> HDFS-9188 introduced {{corruptMeta()}} method to make corrupting the metadata file filesystem
agnostic. There should also be a {{truncateMeta()}} and {{deleteMeta()}} method in MiniDFSCluster
to allow truncation of metadata files on DataNodes without writing code that's specific to
underling file system. {{FsDatasetTestUtils#truncateMeta()}} is already implemented by HDFS-9188
and cam be exposed easily in {{MiniDFSCluster}}.
> This will be useful for tests such as {{TestLeaseRecovery#testBlockRecoveryWithLessMetafile}}
and {{TestCrcCorruption#testCrcCorruption}}.

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