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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10630) Federation State Store FS Implementation
Date Wed, 12 Apr 2017 05:00:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15965369#comment-15965369
] 

Chris Douglas commented on HDFS-10630:
--------------------------------------

* Are the File impls primarily for testing? Or do routers communicate through the FS?
* Should {{StateStoreConnectionMonitorService#serviceInit}} call {{super.serviceInit(conf)}}?
* {{PeriodicService}} probably shouldn't accept calls to its set\* methods after it's started
* start/stop of {{PeriodicService}} should probably be synchronized
* Why is the {{StateStoreService}} a singleton? It doesn't seem to follow, or benefit, from
the {{Service}} pattern.
* The {{StateStoreUtils}} serialization methods using reflection are very general...

> Federation State Store FS Implementation
> ----------------------------------------
>
>                 Key: HDFS-10630
>                 URL: https://issues.apache.org/jira/browse/HDFS-10630
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs
>            Reporter: Inigo Goiri
>            Assignee: Jason Kace
>         Attachments: HDFS-10630.001.patch, HDFS-10630.002.patch, HDFS-10630-HDFS-10467-003.patch,
HDFS-10630-HDFS-10467-004.patch, HDFS-10630-HDFS-10467-005.patch
>
>
> Interface to store the federation shared state across Routers.



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