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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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Aaron T. Myers updated HDFS-4698:
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Fix Version/s: 3.0.0
I've just committed this to trunk.
The patch doesn't apply cleanly to branch-2 because that branch doesn't yet
include the HDFS-347 work. I'm going to leave this JIRA open for now and will
merge this to branch-2 after HDFS-347 is merged.
> 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
> Fix For: 3.0.0
>
> Attachments: HDFS-4698.001.patch, HDFS-4698.002.patch,
> HDFS-4698.003.patch, HDFS-4698.004.patch, HDFS-4698.005.patch,
> HDFS-4698.006.patch, HDFS-4698.007.patch, HDFS-4698.008.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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