[
https://issues.apache.org/jira/browse/HDFS-13443?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16460723#comment-16460723
]
Mohammad Arshad commented on HDFS-13443:
----------------------------------------
Addressed all the comments, except above two comments, submitted new patch
HDFS-13443.006.patch.
bq. I would probably call it TestRemoteRouterMountTableRefresh or similar; no
need for the ZK suffix either
changed to TestRouterMountTableCacheRefresh
bq. For stopping one Router, just pick one, no need to go through the list.
Need to go through the list to pick the router which is not selected for other
admin operations
> RBF: Update mount table cache immediately after changing (add/update/remove)
> mount table entries.
> -------------------------------------------------------------------------------------------------
>
> Key: HDFS-13443
> URL: https://issues.apache.org/jira/browse/HDFS-13443
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: fs
> Reporter: Mohammad Arshad
> Assignee: Mohammad Arshad
> Priority: Major
> Labels: RBF
> Attachments: HDFS-13443-branch-2.001.patch,
> HDFS-13443-branch-2.002.patch, HDFS-13443.001.patch, HDFS-13443.002.patch,
> HDFS-13443.003.patch, HDFS-13443.004.patch, HDFS-13443.005.patch
>
>
> Currently mount table cache is updated periodically, by default cache is
> updated every minute. After change in mount table, user operations may still
> use old mount table. This is bit wrong.
> To update mount table cache, maybe we can do following
> * *Add refresh API in MountTableManager which will update mount table cache.*
> * *When there is a change in mount table entries, router admin server can
> update its cache and ask other routers to update their cache*. For example if
> there are three routers R1,R2,R3 in a cluster then add mount table entry API,
> at admin server side, will perform following sequence of action
> ## user submit add mount table entry request on R1
> ## R1 adds the mount table entry in state store
> ## R1 call refresh API on R2
> ## R1 calls refresh API on R3
> ## R1 directly freshest its cache
> ## Add mount table entry response send back to user.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
