[ 
https://issues.apache.org/jira/browse/HBASE-20548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16476568#comment-16476568
 ] 

Andrew Purtell commented on HBASE-20548:
----------------------------------------

> My proposal is to refresh HDFS block distribution at the end of master 
> initialization and not at retainAssignment()'s createCluster(). 

I think this makes sense. Reasonable to say that O(region) or O(file) tasks 
shouldn't block initialization, even if done in parallel. Schedule it or start 
it in the background. 

> Master fails to startup on large clusters, refreshing block distribution
> ------------------------------------------------------------------------
>
>                 Key: HBASE-20548
>                 URL: https://issues.apache.org/jira/browse/HBASE-20548
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 1.4.4
>            Reporter: Thiruvel Thirumoolan
>            Assignee: Thiruvel Thirumoolan
>            Priority: Major
>             Fix For: 1.5.0, 1.4.5
>
>
> On our large clusters with, master has failed to startup within specified 
> time and aborted itself since it was initializing HDFS block distribution. 
> Enable table also takes time for larger tables for the same reason. My 
> proposal is to refresh HDFS block distribution at the end of master 
> initialization and not at retainAssignment()'s createCluster(). This would 
> address HBASE-16570's intention, but avoid the problems we ran into.
> cc [~aoxiang] [~tedyu]



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Reply via email to