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https://issues.apache.org/jira/browse/HDFS-7057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Milan Desai updated HDFS-7057:
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Attachment: HDFS-7057.patch
Attaching a patch that exposes truncate to FileSystem and adds a shell command.
The following FileSystem implementations support truncate:
DistributedFileSystem, RawLocalFileSystem, and FilterFileSystem.
HttpFSFileSystem and WebHdfsFileSystem have TODO comments for their
implementation.
The shell command usage for truncate is "truncate [-w] <length> <path> ..."
where the -w option requests the command to wait for block recovery, if
necessary. I tested the shell command on a standalone cluster.
> Expose truncate API via FileSystem and shell command
> ----------------------------------------------------
>
> Key: HDFS-7057
> URL: https://issues.apache.org/jira/browse/HDFS-7057
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Affects Versions: 3.0.0
> Reporter: Konstantin Shvachko
> Assignee: Milan Desai
> Attachments: HDFS-7057.patch
>
>
> Add truncate operation to FileSystem and expose it to users via shell command.
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