How to install Cassandra on MacOs Big Sur

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I installed Cassandra on MacOs using brew: brew install cassandra and ran it successfully cassandra -f.

After upgrading to MacOs Big Sur cassandra fails to start with this error:

Cannot change the number of tokens from 512 to 256
Fatal configuration error; unable to start server.  See log for stacktrace.
ERROR [main] 2021-01-05 11:53:34,647 CassandraDaemon.java:803 - Fatal configuration error
org.apache.cassandra.exceptions.ConfigurationException: Cannot change the number of tokens from 512 to 256
    at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:1050) ~[apache-cassandra-3.11.9.jar:3.11.9]
    at org.apache.cassandra.service.StorageService.initServer(StorageService.java:732) ~[apache-cassandra-3.11.9.jar:3.11.9]
    at org.apache.cassandra.service.StorageService.initServer(StorageService.java:666) ~[apache-cassandra-3.11.9.jar:3.11.9]
    at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:395) [apache-cassandra-3.11.9.jar:3.11.9]
    at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:633) [apache-cassandra-3.11.9.jar:3.11.9]
    at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:786) [apache-cassandra-3.11.9.jar:3.11.9]
INFO  [StorageServiceShutdownHook] 2021-01-05 11:53:34,649 HintsService.java:209 - Paused hints dispatch
INFO  [StorageServiceShutdownHook] 2021-01-05 11:53:34,649 Gossiper.java:1662 - Announcing shutdown
INFO  [StorageServiceShutdownHook] 2021-01-05 11:53:34,657 StorageService.java:2408 - Node localhost/127.0.0.1 state jump to shutdown
INFO  [StorageServiceShutdownHook] 2021-01-05 11:53:36,663 MessagingService.java:985 - Waiting for messaging service to quiesce
INFO  [ACCEPT-localhost/127.0.0.1] 2021-01-05 11:53:36,665 MessagingService.java:1346 - MessagingService has terminated the accept() thread
INFO  [StorageServiceShutdownHook] 2021-01-05 11:53:36,745 HintsService.java:209 - Paused hints dispatch

First I tried uninstalling Cassandra via brew, deleting the remaining files: rm -rf /usr/local/etc/cassandra and reinstalling it with brew. This didn't help.

I found this link with complex support issues which rely on finding out where Cassandra config lies and a lot of reading about what are tokens in a cassandra context. It seems a bit extreme for an automatic development environment.

How do I install Cassandra on MacOs Big Sur? Is there a quick fix

macos-big-sur cassandra
1 Answers

On a hunch I followed part of the instructions in the link and at '/usr/local/etc/cassandra' replaced num_tokens property value from 256 to 512 and it seems to work. Please post a better answer or point to a fix on brew

user_14470710
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