[jira] [Commented] (IGNITE-12238) RobinHoodBackwardShiftHashMap works incorrectly on big endian architectures

["Alexey Goncharuk (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-12238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16941077#comment-16941077 ] 

Alexey Goncharuk commented on IGNITE-12238:
-------------------------------------------

Good catch! The changes look good to me.

> RobinHoodBackwardShiftHashMap works incorrectly on big endian architectures
> ---------------------------------------------------------------------------
>
>                 Key: IGNITE-12238
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12238
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Andrey N. Gura
>            Assignee: Andrey N. Gura
>            Priority: Major
>             Fix For: 2.8
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> {{RobinHoodBackwardShiftHashMap}} has bug that can be reproduced only on big endinan architectures. In order to reproduce the problem run the following tests:
> * {{RobinHoodBackwardShiftHashMapTest.testCollisionOnRemove}}
> * {{testRandomOpsPutRemove}}
> The problem is {{setIdealBucket()}} method writes {{long}} value to the offheap memory, while {{getIdealBucket()}} reads {{int}} value. For little endian architectures it works because meaningful 4 bytes will written first  to the memory and leading zero bytes will be rewriteen by the next operation. On big endian architecture always 4 zero bytes will be written to the memory.



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