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https://issues.apache.org/jira/browse/HDFS-14403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16821375#comment-16821375
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Chao Sun edited comment on HDFS-14403 at 4/18/19 6:15 PM:
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Very much looking forward to this feature as it could help a lot to our
clusters as well. Will take a look at [~cgregori]'s new patch as well.
Looking at [~daryn]'s patch, I'm wondering whether it makes sense to separate
the work into two parts: 1) adding more detailed RPC processing timing metrics
(e.g., enqueue, queue, lock free/hold/read/write, etc) which can help to better
understand RPC lifetime, and 2) cost-based fair call queue based on 1).
was (Author: csun):
Very much looking forward to this feature as it could help a lot to our
clusters as well. Will take a look at [~cgregori]'s new patch as well.
Looking at [~daryn]'s patch, I'm wondering whether it makes sense to separate
the work into two parts: 1) add detailed RPC processing timing metrics (e.g.,
enqueue, queue, lock free/hold/read/write, etc), and 2) cost-based fair call
queue.
> 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.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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