[CASSANDRA-9608] Support Java 11

• Type: Task
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 4.0-alpha1, 4.0
• Labels: Java11
• Assignee: Robert Stupp
• Reporter: Robert Stupp

Authors

Robert Stupp

Reviewers

Jason Brown

• Created: 17/Jun/15 14:55
• Updated: 06/Feb/23 03:48
• Resolved: 26/Jul/18 16:23

Description

This ticket is intended to group all issues found to support Java 9 in the future.

From what I've found out so far:

• Maven dependency com.sun:tools:jar:0 via cobertura cannot be resolved. It can be easily solved using this patch:

  -        <dependency groupId="net.sourceforge.cobertura" artifactId="cobertura"/>
  +        <dependency groupId="net.sourceforge.cobertura" artifactId="cobertura">
  +          <exclusion groupId="com.sun" artifactId="tools"/>
  +        </dependency>
  

• Another issue is that sun.misc.Unsafe no longer contains the methods monitorEnter + monitorExit. These methods are used by o.a.c.utils.concurrent.Locks which is only used by o.a.c.db.AtomicBTreeColumns.

I don't mind to start working on this yet since Java 9 is in a too early development phase.

Issue Links

• Dependency: CASSANDRA-14466 Enable Direct I/O
• Dependency: CASSANDRA-13903 Add JDK9 vectorizedMismatch array compare support
• Dependency: CASSANDRA-13908 Add JDK9 new CRC32C checksum
• duplicates: CASSANDRA-12612 cassandra doesn't build on jdk 9
• incorporates: CASSANDRA-14142 logs directory for gc.log doesn't exist on first start
• is duplicated by: CASSANDRA-14446 Cassandra will not start on JRE 10
• is duplicated by: CASSANDRA-14137 Cassandra crashes on startup. Crash Problematic frame: # C [sigar-amd64-winnt.dll+0x14ed4] using JRE version: Java(TM) SE Runtime Environment (9.0+11)
• is duplicated by: CASSANDRA-11987 Cassandra support for JDK 9
• is related to: CASSANDRA-14757 GCInspector "Error accessing field of java.nio.Bits" under java11
• relates to: CASSANDRA-13107 Remove -XX:ThreadPriorityPolicy=42 jvm flag
• relates to: CASSANDRA-12612 cassandra doesn't build on jdk 9
• relates to: CASSANDRA-14606 Add documentation for java 11 support
• relates to: CASSANDRA-14607 Explore optimizations in AbstractBtreePartiton, java 11 variant
• relates to: CASSANDRA-14608 Confirm correctness of windows scripts post-9608
• relates to: CASSANDRA-14609 Update circleci builds/env to support java 11
• relates to: CASSANDRA-16894 Java 11 support - remove the experimental flag
• links to: GitHub Pull Request #31

Sub-Tasks

• Remove -XX:ThreadPriorityPolicy=42 jvm flag: Resolved