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From "Semen Boikov (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (IGNITE-3073) Possible thread starvation due to rebalancing
Date Wed, 04 May 2016 11:28:12 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-3073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Semen Boikov closed IGNITE-3073.
--------------------------------

> Possible thread starvation due to rebalancing
> ---------------------------------------------
>
>                 Key: IGNITE-3073
>                 URL: https://issues.apache.org/jira/browse/IGNITE-3073
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache
>    Affects Versions: 1.5.0.final
>            Reporter: Valentin Kulichenko
>            Priority: Critical
>             Fix For: 1.6
>
>
> We're currently rebalancing the utility cache in the system pool. This can cause starvation,
for example in this scenario:
> # Start several nodes and a cache with indexing configured.
> # Continuously load the system with puts.
> # Add one more node. It will join and will start processing put requests immediately.
> # For each request, indexing processor will try to get binary metadata and will block
on utility cache rebalance future. This will block all threads in the system pool.
> # Utility cache rebalancing will be scheduled but will never start, because all threads
in system pool are blocked.
> I think we should rebalance utility cache synchronously in exchange worker, like we do
with the marshaller cache.



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