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Posted to commits@cassandra.apache.org by "Yakir Gibraltar (Jira)" <ji...@apache.org> on 2020/11/17 12:41:00 UTC
[jira] [Commented] (CASSANDRA-9608) Support Java 11
[ https://issues.apache.org/jira/browse/CASSANDRA-9608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17233556#comment-17233556 ]
Yakir Gibraltar commented on CASSANDRA-9608:
--------------------------------------------
Hi [~snazy] Possible small bug in {{cassandra-env.sh:}}
[https://github.com/apache/cassandra/blob/trunk/conf/cassandra-env.sh#L98]
The following command incorrect:
{{echo "$JVM_OPTS" | grep -q "^-[X]log:gc"}}
Should be:
{{echo "$JVM_OPTS" | grep -qe "-[X]log:gc"}}
The variable {{$JVM_OPTS}} not starting with {{-Xlog..}} , and always return 1, remove {{^}} and add {{-e}}q will solve the problem.
It's causing that {{cassandra-env.sh}} ignoring variable of {{-Xlog}} in {{jvm11-server.options}} and {{jvm8-server.options}}
> Support Java 11
> ---------------
>
> Key: CASSANDRA-9608
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9608
> Project: Cassandra
> Issue Type: Task
> Reporter: Robert Stupp
> Assignee: Robert Stupp
> Priority: Low
> Labels: Java11
> Fix For: 4.0, 4.0-alpha1
>
> Attachments: jdk_9_10.patch
>
>
> 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:
> {code}
> - <dependency groupId="net.sourceforge.cobertura" artifactId="cobertura"/>
> + <dependency groupId="net.sourceforge.cobertura" artifactId="cobertura">
> + <exclusion groupId="com.sun" artifactId="tools"/>
> + </dependency>
> {code}
> * 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.
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