[HDDS-11392] ChecksumByteBufferImpl's static initializer fails with java 17+

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Fix Version/s: 2.0.0
• Labels: pull-request-available
• Target Version/s: 2.0.0
• Assignee: István Fajth
• Reporter: István Fajth
• Created: 29/Aug/24 21:28
• Updated: 01/Sep/24 20:58
• Resolved: 01/Sep/24 20:58

Description

ChecksumByteBufferImpl's static initializer fails with:

ava.lang.reflect.InaccessibleObjectException: Unable to make field boolean java.nio.ByteBuffer.isReadOnly accessible: module java.base does not "opens java.nio" to unnamed module @46d56d67
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
	at org.apache.hadoop.ozone.common.ChecksumByteBufferImpl.<clinit>(ChecksumByteBufferImpl.java:51)

This exception appears with Java 17 and above as I tested it, it works for Java 9 and 11, however there is a way (according to the comment in the initializer) in Java 9 which we can use and which is identical to what we are doing with setting the field in Java 8.

So I propose to use that from Java 9, and do not try to set the isReadOnly field accessible after Java 8.

Issue Links

• links to: GitHub Pull Request #7135