accumulo-notifications mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Denis Petrov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3471) Adding a new tserver puts some tables offline for few minutes
Date Mon, 12 Jan 2015 17:24:34 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14273801#comment-14273801
] 

Denis Petrov commented on ACCUMULO-3471:
----------------------------------------

Killing all the tservers and start cluster is perhaps faster than add a single server.

> Adding a new tserver puts some tables offline for few minutes
> -------------------------------------------------------------
>
>                 Key: ACCUMULO-3471
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3471
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.6.1
>         Environment: Ubuntu 12.04
>            Reporter: Denis Petrov
>
> I run an Accumulo cluster with 15 tservers with about 6000 tablets on each (disks are
quite slow - each node has 2*4Tb SATA)
> When a new tserver added to the cluster, the rebalancing procedure starts.
> During this procedure some tablets are offline and unreachable during 5-10 minutes.
> It is visible in http://monitor:50095/tables and by timeouts on client side.
> The rebalancing caused by killing a tserver converges much faster then rebalancing caused
by adding a tserver.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message