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From "Ilya Kasnacheev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-11745) Rebalancing overwhelmingly prefers some supplier nodes to others
Date Mon, 15 Apr 2019 15:06:00 GMT
Ilya Kasnacheev created IGNITE-11745:
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             Summary: Rebalancing overwhelmingly prefers some supplier nodes to others
                 Key: IGNITE-11745
                 URL: https://issues.apache.org/jira/browse/IGNITE-11745
             Project: Ignite
          Issue Type: Bug
          Components: cache
    Affects Versions: 2.7
            Reporter: Ilya Kasnacheev
            Assignee: Ilya Kasnacheev


When cache has backups, and you add third node to cluster, Ignite will only rebalance data
from single node.
When you add n-th node, Ignite will not rebalance from some nodes and it will pull 10x as
much data from some nodes than from others.

This is because we filter static nodes list by partition availability and then pick the first
one. Overwhelmingly it is the first nodes in list and nodes towards the end of list will never
get to supply partitions.



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