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https://issues.apache.org/jira/browse/HDFS-16283?focusedWorklogId=787420&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-787420
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ASF GitHub Bot logged work on HDFS-16283:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Jul/22 16:08
Start Date: 03/Jul/22 16:08
Worklog Time Spent: 10m
Work Description: ZanderXu commented on PR #4524:
URL: https://github.com/apache/hadoop/pull/4524#issuecomment-1173128238
Thanks @ayushtkn for your review and ideas.
If needed, I will create a new PR to support caching `availableNamespace`
Issue Time Tracking
-------------------
Worklog Id: (was: 787420)
Time Spent: 3h 50m (was: 3h 40m)
> RBF: improve renewLease() to call only a specific NameNode rather than make
> fan-out calls
> -----------------------------------------------------------------------------------------
>
> Key: HDFS-16283
> URL: https://issues.apache.org/jira/browse/HDFS-16283
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Priority: Major
> Labels: pull-request-available
> Attachments: RBF_ improve renewLease() to call only a specific
> NameNode rather than make fan-out calls.pdf
>
> Time Spent: 3h 50m
> Remaining Estimate: 0h
>
> Currently renewLease() against a router will make fan-out to all the
> NameNodes. Since renewLease() call is so frequent and if one of the NameNodes
> are slow, then eventually the router queues are blocked by all renewLease()
> and cause router degradation.
> We will make a change in the client side to keep track of NameNode Id in
> additional to current fileId so routers understand which NameNodes the client
> is renewing lease against.
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