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https://issues.apache.org/jira/browse/HDFS-4698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-4698:
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Attachment: HDFS-4698.003.patch
When creating {{DatanodeID}} objects, {{JspHelper}} needs to use
{{InetAddress#getHostAddress}}, not {{InetAddress#toString}}. The latter
returns stuff like {{"keter/127.0.0.1"}} which can't be parsed by
{{NetUtils#createSocketAddr}} (and probably much else).
> provide client-side metrics for remote reads, local reads, and short-circuit
> reads
> ----------------------------------------------------------------------------------
>
> Key: HDFS-4698
> URL: https://issues.apache.org/jira/browse/HDFS-4698
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client
> Affects Versions: 2.0.4-alpha
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Priority: Minor
> Attachments: HDFS-4698.001.patch, HDFS-4698.002.patch,
> HDFS-4698.003.patch
>
>
> We should provide metrics to let clients know how many bytes of data they
> have read remotely, versus locally or via short-circuit local reads. This
> will allow clients to know how well they're doing at bringing the computation
> to the data, which will be useful in evaluating placement policies and
> cluster configurations.
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