[SPARK-27981] Remove `Illegal reflective access` warning for `java.nio.Bits.unaligned()`

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: Spark Core
• Assignee: Dongjoon Hyun
• Reporter: Dongjoon Hyun
• Created: 08/Jun/19 06:20
• Updated: 12/Jan/21 03:34
• Resolved: 08/Jun/19 23:40

Description

This PR aims to remove the following warnings for `java.nio.Bits.unaligned` at JDK9/10/11/12. Please note that there are more warnings which is beyond of this PR's scope.

bin/spark-shell --driver-java-options=--illegal-access=warn
WARNING: Illegal reflective access by org.apache.spark.unsafe.Platform (file:/Users/dhyun/APACHE/spark-release/spark-3.0/assembly/target/scala-2.12/jars/spark-unsafe_2.12-3.0.0-SNAPSHOT.jar) to method java.nio.Bits.unaligned()
...

Issue Links

• is depended upon by: SPARK-31540 Backport SPARK-27981 Remove `Illegal reflective access` warning for `java.nio.Bits.unaligned()` in JDK9+
• links to: GitHub Pull Request #24825