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Posted to issues@ignite.apache.org by "Denis Magda (JIRA)" <ji...@apache.org> on 2016/06/06 14:38:21 UTC
[jira] [Updated] (IGNITE-3261) AffinityKey is not stored in the
metadata cache
[ https://issues.apache.org/jira/browse/IGNITE-3261?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Denis Magda updated IGNITE-3261:
--------------------------------
Attachment: Ignite-MarshallBenchmark.zip
> AffinityKey is not stored in the metadata cache
> -----------------------------------------------
>
> Key: IGNITE-3261
> URL: https://issues.apache.org/jira/browse/IGNITE-3261
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 1.5.0.final
> Reporter: Denis Magda
> Priority: Critical
> Labels: community, important
> Fix For: 1.7
>
> Attachments: Ignite-MarshallBenchmark.zip
>
>
> Presently we don't register predefined and system classes in metadata cache which can lead to significant performance drops when these types used as keys.
> As an example we have {{AffinityKey}} class. It's not registered in the metadata cache and as a result client nodes don't update their {{CacheObjectBinaryProcessorImpl.clientMetaDataCache}}. After that when a client node needs to get {{AffinityKey}} metadata using {{CacheObjectBinaryProcessorImpl.metadata(typeId)}} it will always call metadata cache and this is a bottleneck. The drop can be significant because this method is called from methods like {{GridAffinityProcessor.mapKeyToPrimaryAndBackups}}.
> In attach you can find a simple benchmark that shows how slower a result if AffinityKey is used.
> As a solution we can register {{AffinityKey}} and other system and predefined classes (?) in the metadata cache.
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