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https://issues.apache.org/jira/browse/HDFS-13843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16714593#comment-16714593
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Zsolt Venczel commented on HDFS-13843:
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Thanks for your feedback [~SoumyaPN]!
{quote}Sure.It doesn't . It was related to showing up the info in UI when two
destinations are mounted to one NS.NS1->tmp1 and NS1->tmp2 then in the UI it
was not showing order.
{quote}
I might have misunderstood but based on the description _"But order information
like HASH, RANDOM is not displayed in mount entries and also not displayed in
federation router UI."_ the order information was not displayed in mount
entries *and* not displayed in the UI.
I added the order information that was missing and fixed the UI as it was not
displaying order information ever (not just in case of multiple destinations).
Based on your reply I assume the UI fix is needed only. Am I right?
{quote}There is already one JIRA addressing it.
{quote}
Can you point me to that jira? Should this jira be closed as a duplicate then?
You are right about compatibility problems. Would adding a new command to
require the Order list be more beneficial?
Best regards,
Zsolt
> RBF: When we add/update mount entry to multiple destinations, unable to see
> the order information in mount entry points and in federation router UI
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-13843
> URL: https://issues.apache.org/jira/browse/HDFS-13843
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: federation
> Reporter: Soumyapn
> Assignee: Zsolt Venczel
> Priority: Major
> Labels: RBF
> Attachments: HDFS-13843.01.patch, HDFS-13843.02.patch
>
>
> *Scenario:*
> Execute the below add/update command for single mount entry for single
> nameservice pointing to multiple destinations.
> # hdfs dfsrouteradmin -add /apps1 hacluster /tmp1
> # hdfs dfsrouteradmin -add /apps1 hacluster /tmp1,/tmp2,/tmp3
> # hdfs dfsrouteradmin -update /apps1 hacluster /tmp1,/tmp2,/tmp3 -order
> RANDOM
> *Actual*. With the above commands, mount entry is successfully updated.
> But order information like HASH, RANDOM is not displayed in mount entries and
> also not displayed in federation router UI. However order information is
> updated properly when there are multiple nameservices. This issue is with
> single nameservice having multiple destinations.
> *Expected:*
> *Order information should be updated in mount entries so that the user will
> come to know which order has been set.*
>
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