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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Commented] (HDFS-10880) Federation Mount Table State Store internal API
Date Mon, 05 Mar 2018 04:46:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16385604#comment-16385604
] 

Íñigo Goiri commented on HDFS-10880:
------------------------------------

Thanks [~maobaolong] for reminding me about this. I opened HDFS-13224 to track that work.

> Federation Mount Table State Store internal API
> -----------------------------------------------
>
>                 Key: HDFS-10880
>                 URL: https://issues.apache.org/jira/browse/HDFS-10880
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: fs
>            Reporter: Jason Kace
>            Assignee: Íñigo Goiri
>            Priority: Major
>             Fix For: 2.9.0, 3.0.0
>
>         Attachments: HDFS-10880-HDFS-10467-000.patch, HDFS-10880-HDFS-10467-001.patch,
HDFS-10880-HDFS-10467-002.patch, HDFS-10880-HDFS-10467-003.patch, HDFS-10880-HDFS-10467-004.patch,
HDFS-10880-HDFS-10467-005.patch, HDFS-10880-HDFS-10467-006.patch, HDFS-10880-HDFS-10467-007.patch,
HDFS-10880-HDFS-10467-008.patch
>
>
> The Federation Mount Table State encapsulates the mapping of file paths in the global
namespace to a specific NN(nameservice) and local NN path.  The mount table is shared by all
router instances and represents a unified view of the global namespace.   The state store
API for the mount table allows the related records to be queried, updated and deleted.



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