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https://issues.apache.org/jira/browse/IGNITE-1837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Denis Magda updated IGNITE-1837:
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Summary: Rebalancing on a big cluster (64 nodes and more) (was: Slow
rebalancing on a big cluster (64 nodes and more))
> Rebalancing on a big cluster (64 nodes and more)
> ------------------------------------------------
>
> Key: IGNITE-1837
> URL: https://issues.apache.org/jira/browse/IGNITE-1837
> Project: Ignite
> Issue Type: Bug
> Components: general
> Affects Versions: ignite-1.4
> Reporter: Denis Magda
> Assignee: Alexey Goncharuk
> Fix For: 1.5
>
>
> It seems that Ignite has different rebalancing related issues that appear
> when a big cluster is started.
> Under the big cluster I mean:
> - cluster of 64 server nodes;
> - cluster of 64 server and 64 client nodes.
> The issues can be divided on three main use cases.
> 1) Slow rebalancing on start.
> If to set partitions number for some cache to value bigger than default one
> (to 3200 or to 6400, etc.) then rebalancing of such caches may take several
> minutes. The caches are empty at that time.
> In addition, as a part of this issue let's document that the number of
> partitions can't exceed some value.
> 2) Slow rebalancing on client nodes shutdown.
> If to stop a significant number of client nodes at the same time then again
> by some reason the rebalancing will take serveral minutes.
> 3) Periodic rebalancing timeouts during the time a cluster is idle.
> Discussed there:
> http://apache-ignite-users.70518.x6.nabble.com/Help-with-tuning-for-larger-clusters-td1692.html#a1813
> Probably the code is not optimal and sends rebalancing related messages too
> frequently.
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