[HBASE-19386] HBase UnsafeAvailChecker returns false on Arm64

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha-1
• Fix Version/s: 2.0.0-beta-1, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Yuqi Gu
• Reporter: Yuqi Gu
• Created: 30/Nov/17 06:56
• Updated: 01/Aug/18 06:22
• Resolved: 30/Nov/17 13:13

Description

Arm64v8 supports unaligned access .
But UnsafeAvailChecker returns false due to a JDK bug.
The false of UnsafeAvailChecker return also causes the HBase Unit tests(FuzzyRowFilter, TestFuzzyRowFilterEndToEnd, TestFuzzyRowAndColumnRangeFilter) failures.
Enable Arm64 unaligned support by providing a hard-code workaround for the JDK bug.