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https://issues.apache.org/jira/browse/HDFS-5450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Wang updated HDFS-5450:
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Attachment: hdfs-5450-1.patch
Hey Colin, good idea on the libhdfs support. I'd like to punt it out to a
follow-on though if that's okay.
Here's a patch doing just the Java part. I added a new field and getter to
BlockLocation for {{cachedHosts}} (which is what I believe InputFormats would
want, since they use getHosts right now), and also cleaned up BlockLocation
since the constructor logic was kinda messy.
> better API for getting the cached blocks locations
> --------------------------------------------------
>
> Key: HDFS-5450
> URL: https://issues.apache.org/jira/browse/HDFS-5450
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Affects Versions: 3.0.0
> Reporter: Colin Patrick McCabe
> Assignee: Andrew Wang
> Priority: Minor
> Attachments: hdfs-5450-1.patch
>
>
> Currently, we have to downcast the {{BlockLocation}] to {{HdfsBlockLocation}}
> to get information about whether a replica is cached. We should have this
> information in {{BlockLocation}} instead.
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