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https://issues.apache.org/jira/browse/HDFS-14403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16821513#comment-16821513
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Christopher Gregorian commented on HDFS-14403:
----------------------------------------------
Popped up a new patch: combined the two approaches somewhat, moving the actual
calculation of a cost from the {{ProcessingDetails}} to a {{CostProvider}}
instead. Also restored a bit of logic that determined a {{detailedMetricsName}}
to pass to {{updateMetrics}}, now stores that name on the {{Call}} instead (not
sure if this is the best approach). Ready for more reviews!
> Cost-Based RPC FairCallQueue
> ----------------------------
>
> Key: HDFS-14403
> URL: https://issues.apache.org/jira/browse/HDFS-14403
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: ipc, namenode
> Reporter: Erik Krogen
> Assignee: Christopher Gregorian
> Priority: Major
> Labels: qos, rpc
> Attachments: CostBasedFairCallQueueDesign_v0.pdf,
> HDFS-14403.001.patch, HDFS-14403.002.patch, HDFS-14403.003.patch,
> HDFS-14403.004.patch, HDFS-14403.005.patch, HDFS-14403.branch-2.8.patch
>
>
> HADOOP-15016 initially described extensions to the Hadoop FairCallQueue
> encompassing both cost-based analysis of incoming RPCs, as well as support
> for reservations of RPC capacity for system/platform users. This JIRA intends
> to track the former, as HADOOP-15016 was repurposed to more specifically
> focus on the reservation portion of the work.
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