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From "Inigo Goiri (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10882) Federation State Store Interface API
Date Wed, 21 Sep 2016 21:49:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15511295#comment-15511295
] 

Inigo Goiri commented on HDFS-10882:
------------------------------------

[~jakace], a few comments:
* Could you extend the comment for {{FederationProtocolBase}}?
* In {{FederationProtocolFactory}}, could we use record and clazz instead of entity/entry
and entityType? Can you also add a javadoc for {{useProtobuf()}}.
* Do we need the constructor in {{FederationPBHelper}}?
* In general, the PBHelper is a little different to what HDFS has. However, this matches the
YARN approach; ideally, we should use the YARN {{RecordFactory}} but as this is not in commons,
this is the closest approach.
* Not sure what to do about the Federation prefix in classes like FederationPBHelper. Kind
of superfluous.

> Federation State Store Interface API
> ------------------------------------
>
>                 Key: HDFS-10882
>                 URL: https://issues.apache.org/jira/browse/HDFS-10882
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: fs
>            Reporter: Jason Kace
>            Assignee: Jason Kace
>         Attachments: HDFS-10882-HDFS-10467-001.patch, HDFS-10882-HDFS-10467-002.patch
>
>
> The minimal classes and interfaces required to create state store internal data APIs
using protobuf serialization.  This is a pre-requisite for higher level APIs such as the registration
API and the mount table API.



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