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https://issues.apache.org/jira/browse/ACCUMULO-3471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14273811#comment-14273811
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Josh Elser commented on ACCUMULO-3471:
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I'm going to see if I can reproduce this (albeit at a smaller scale). If I can
pick out a change to make, we can try to get this into 1.6.2. Otherwise, we can
let this fall to 1.6.3.
> 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
> Fix For: 1.6.2, 1.7.0
>
>
> 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.
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