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https://issues.apache.org/jira/browse/IGNITE-2334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov updated IGNITE-2334:
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Fix Version/s: (was: 2.0)
2.1
> Consider getting rid of XXX8 data structures.
> ---------------------------------------------
>
> Key: IGNITE-2334
> URL: https://issues.apache.org/jira/browse/IGNITE-2334
> Project: Ignite
> Issue Type: Task
> Components: cache
> Affects Versions: ignite-1.4
> Reporter: Vladimir Ozerov
> Fix For: 2.1
>
>
> Current state of Java 8 data structures differs from our "jsr166" data
> structures.
> One noticeable change is how size is handled inside ConcurrentHashMap.
> Instead of using LongAdder, it has some inlined version of adder which is
> more suitable for map operations.
> But our outdated implementation ConcurrentHashMap8 still uses LongAdder8 and
> it is seen as a hotspot in profiler.
> We should evaluate whether it still makes sense to keep our versions of
> concurrent structures.
> 1) Quickly replace all *8* data structures with their normal counterparts.
> 2) Run benchmarks with Java7 and Java8.
> 3) Decide whether change is needed.
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