Denis Petrov created ACCUMULO-3471:
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Summary: 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.
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