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https://issues.apache.org/jira/browse/IGNITE-14769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Orlov updated IGNITE-14769:
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Attachment: (was: Partition count 100.svg)
> Key hash calculation.
> ---------------------
>
> Key: IGNITE-14769
> URL: https://issues.apache.org/jira/browse/IGNITE-14769
> Project: Ignite
> Issue Type: Improvement
> Reporter: Andrey Mashenkov
> Assignee: Konstantin Orlov
> Priority: Major
> Labels: iep-54, ignite-3
> Original Estimate: 96h
> Remaining Estimate: 96h
>
> There are next possible ways for cache calculation.
> # Update hash on every write method call as it works for now.
> # Calculate for all key chunk (hash of byte[]) - all columns including a
> null-map.
> Let's choose and implement the best way and along with a better hash function,
> e.g. xxHash64 [1], Murmur3 [2]released in Apache Commons, CityHash (from
> Google) [3], FastHash32 [4].
>
> [1][https://github.com/Cyan4973/xxHash/]
> [2]https://commons.apache.org/proper/commons-codec/jacoco/org.apache.commons.codec.digest/MurmurHash3.java.html
> [3] [https://github.com/google/cityhash]
> [4] https://github.com/rurban/smhasher/blob/master/fasthash.cpp
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