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From "Yu Li (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-17202) Master takes a long time to initialize
Date Wed, 30 Nov 2016 06:11:58 GMT

     [ https://issues.apache.org/jira/browse/HBASE-17202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yu Li resolved HBASE-17202.
---------------------------
    Resolution: Duplicate

Duplicate with HBASE-16570, please refer to the [addendum patch v7|https://issues.apache.org/jira/secure/attachment/12837729/HBASE-16570_addnum_v7.patch]
and [comment|https://issues.apache.org/jira/browse/HBASE-16570?focusedCommentId=15649981&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15649981]
there for more details.

> Master takes a long time to initialize
> --------------------------------------
>
>                 Key: HBASE-17202
>                 URL: https://issues.apache.org/jira/browse/HBASE-17202
>             Project: HBase
>          Issue Type: Improvement
>          Components: Balancer, master
>            Reporter: Ashu Pachauri
>            Assignee: Ashu Pachauri
>
> On master failover or a full cluster restart, we create the RegionLocationFinder cache
by calculating block locations for every region; this cache is used by the balancer for calculating
region locality. This greatly increases the time it takes for the assignment manager to start
and affects region availability in scenarios of full cluster restart.
> We should initialize assignment manager with the bare minimum information and asynchronously
load the block location cache.



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