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From "Christopher Tubbs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-4043) start-up needs to scale with the number of servers
Date Thu, 16 Feb 2017 21:39:42 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-4043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15870737#comment-15870737
] 

Christopher Tubbs commented on ACCUMULO-4043:
---------------------------------------------

A start-up delay parameter, similar to the gc startup delay, could help the user decide what
the appropriate value should be for their situation.

> start-up needs to scale with the number of servers
> --------------------------------------------------
>
>                 Key: ACCUMULO-4043
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4043
>             Project: Accumulo
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 1.6.4
>         Environment: very large production cluster
>            Reporter: Eric Newton
>            Assignee: Ivan Bella
>             Fix For: 2.0.0
>
>
> When starting a very large production cluster, the master gets running fast enough that
it loads the metadata table before all the tservers are registered and running. The result
is a very long balancing period after all servers started. The wait period for the tablet
server stabilization needs to scale somewhat with the number of tablet servers.



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