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ASF GitHub Bot logged work on HDFS-16283: ----------------------------------------- Author: ASF GitHub Bot Created on: 06/Jul/22 14:44 Start Date: 06/Jul/22 14:44 Worklog Time Spent: 10m Work Description: ayushtkn commented on PR #4524: URL: https://github.com/apache/hadoop/pull/4524#issuecomment-1176312209 @Hexiaoqiao I am ok with using path, but if I catch correct, the only save with using path will be like we won't be exposing the namespaces to the end client? but in exchange we will be saving I think a bunch of RPCs, especially in case of multi destination mount points. May be from the performance point of view, it might be better with namespaces( the present approach). But I don't have any strong objections, if you feel we shouldn't expose the namespaces to end client. if there is a particular use case where we shouldn't expose namespace to end client, in that case we may hide this change behind a config, and this optimisation won't work in that case, but in general ViewFs also knows about all namespaces and usually a lot of clients too have these namespaces defined in their configs. so, that is not a big secret, and this namespace info will also be their in back-end and I even don't think exposing them via this route can have any security issue? But I am Ok, with whichever approach you folks feel better.. Issue Time Tracking ------------------- Worklog Id: (was: 788285) Time Spent: 5h 10m (was: 5h) > 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: 5h 10m > 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. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org