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https://issues.apache.org/jira/browse/ACCUMULO-835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15859684#comment-15859684
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Ivan Bella commented on ACCUMULO-835:
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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: https://issues.apache.org/jira/browse/ACCUMULO-835
> 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 underway?
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