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Posted to issues@spark.apache.org by "Josh Rosen (JIRA)" <ji...@apache.org> on 2016/04/01 23:15:25 UTC
[jira] [Resolved] (SPARK-12181) Check Cached unaligned-access
capability before using Unsafe
[ https://issues.apache.org/jira/browse/SPARK-12181?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Josh Rosen resolved SPARK-12181.
--------------------------------
Resolution: Fixed
Assignee: Ted Yu
Fix Version/s: 2.0.0
Marking as fixed for 2.0.0 (I think our script forgot to resolve this JIRA).
> Check Cached unaligned-access capability before using Unsafe
> ------------------------------------------------------------
>
> Key: SPARK-12181
> URL: https://issues.apache.org/jira/browse/SPARK-12181
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Reporter: Ted Yu
> Assignee: Ted Yu
> Fix For: 2.0.0
>
> Attachments: spark-12181.txt
>
>
> For MemoryMode.OFF_HEAP, Unsafe.getInt etc. are used with no restriction.
> However, the Oracle implementation uses these methods only if the class variable unaligned (commented as "Cached unaligned-access capability") is true, which seems to be calculated whether the architecture is i386, x86, amd64, or x86_64.
> I think we should perform similar check for the use of Unsafe.
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