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https://issues.apache.org/jira/browse/HDFS-9308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tony Wu updated HDFS-9308:
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Attachment: HDFS-9308.002.patch
* Add {{truncateMeta()}} and {{deleteMeta()}} method to truncate/delete meta
data files on DataNodes.
* Modify {{TestLeaseRecovery#testBlockRecoveryWithLessMetafile}} to use the new
APIs.
* Enhance {{TestLeaseRecovery#testBlockRecoveryWithLessMetafile}} to check the
file size after lease recovery is complete. Truncating the metadata file on
DataNodes will effectively reduce the file size after lease recovery. The test
should verify the new file size as well.
* Modify {{TestCrcCorruption#thistest}} to use the new APIs.
> 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
> Attachments: HDFS-9308.001.patch, HDFS-9308.002.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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