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From "Ivan Bella (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-835) not balancing because tablets are offline
Date Thu, 09 Feb 2017 15:51:41 GMT


Ivan Bella commented on ACCUMULO-835:

Another similar scenario is when there are some long running major compactions running, which
are holding up migrations, and subsequently all balancing activities are halted until that
is complete.  This scenario is not uncommon for us on our larger clusters.  The workaround
is to fail the compactions and bounce the tservers that are holding up the migrations.

> not balancing because tablets are offline
> -----------------------------------------
>                 Key: ACCUMULO-835
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>          Components: master
>            Reporter: Eric Newton
>            Priority: Minor
> I started a large merge and chopping took a long time.  I added a new server, and it
didn't get any new tablets because the merge had several tablets offline.  There needs to
be a better heuristic for balancing even if a few tablets are offline.  Perhaps run balancing
if the imbalance is greater than the number of offline tablets and there are no migrations

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