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https://issues.apache.org/jira/browse/IGNITE-2834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov closed IGNITE-2834.
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> IGFS: Introduce optional co-location of metadata.
> -------------------------------------------------
>
> Key: IGNITE-2834
> URL: https://issues.apache.org/jira/browse/IGNITE-2834
> Project: Ignite
> Issue Type: Task
> Components: IGFS
> Affects Versions: 1.5.0.final
> Reporter: Vladimir Ozerov
> Assignee: Vladimir Ozerov
> Fix For: 1.6
>
>
> *Description*
> IGFS meta manager heavily relies on transactions in REPLICATED cache. Some
> transactions operate on more than 1 keys. As key affinity is not specified at
> the moment, different Ignite nodes host different primary keys. As a result,
> transaction on multiple keys might lead to relatively big number of network
> requests during 2PC.
> *Solution*
> If we co-located all metadata on a single node, transaction commit will
> require less network trips, thus decreasing latency and contention.
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