Where to change jvm options for Cassandra on MAC

Question

I Installed cassandra 3.11.4 using Brew. cassandra -v suggests me the cassandra is installed. But when I tried to do cassandra -f, I'm getting following error:

[0.001s][warning][gc] -Xloggc is deprecated. Will use -Xlog:gc:/usr/local/Cellar/cassandra/3.11.4/libexec/logs/gc.log instead.
intx ThreadPriorityPolicy=42 is outside the allowed range [ 0 ... 1 ]
Improperly specified VM option 'ThreadPriorityPolicy=42'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

Installed JDK Version: 11

How can I fix this error?

It may be related to java version: https://stackoverflow.com/a/37297330 — João Matos, Jun 10 '19 at 15:49
Try to install java 8, you can have multiple versions installed alongside: https://stackoverflow.com/q/26252591. See the most voted answer, you can use brew to do this. — João Matos, Jun 10 '19 at 16:07
Cassandra 3.11.4 supports Java 11, we have been testing it for the last months and have been taking advantage of the zgc garbage collection with good results so far — Carlos Monroy Nieblas, Jun 11 '19 at 13:12

score 2 · Answer 1 · answered Jun 10 '19 at 16:17

The issue that you are having is that the jvm.options file has the default policy -XX:ThreadPriorityPolicy=42, if you are using Java 11 you should comment it. This file is located in the same directory where you can find the cassandra.yaml configuration file.

Also note that if you are using Java 11, you will need to replace all the gc-related settings with -Xlog:gc:/<your cassandra log path>/gc.log

Where to change jvm options for Cassandra on MAC

1 Answers1