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https://issues.apache.org/jira/browse/HDFS-10466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Juan Yu updated HDFS-10466:
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Attachment: HDFS-10466.patch
> DistributedFileSystem.listLocatedStatus() should return HdfsBlockLocation
> instead of BlockLocation
> --------------------------------------------------------------------------------------------------
>
> Key: HDFS-10466
> URL: https://issues.apache.org/jira/browse/HDFS-10466
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: Juan Yu
> Assignee: Juan Yu
> Priority: Minor
> Attachments: HDFS-10466.patch
>
>
> https://issues.apache.org/jira/browse/HDFS-202 added a new API
> listLocatedStatus() to get all files' status with block locations for a
> directory. This is great that we don't need to call
> FileSystem.getFileBlockLocations() for each file. it's much faster (about
> 8-10 times).
> However, the returned LocatedFileStatus only contains basic BlockLocation
> instead of HdfsBlockLocation, the LocatedBlock details are stripped out.
> It should do the similar as DFSClient.getBlockLocations(), return
> HdfsBlockLocation which provide full block location details.
> The implementation of DistributedFileSystem. listLocatedStatus() retrieves
> HdfsLocatedFileStatus which contains all information, but when convert it to
> LocatedFileStatus, it doesn't keep LocatedBlock data. It's a simple (and
> compatible) change to make to keep the LocatedBlock details.
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