I am working on a StandaloneDowngrader.java based on StandaloneUpgrader.java
While working on the tests I had a problem with 2 test (testFlagArgs and testDefaultCall) that failed with: ERROR [main] 2022-12-14 10:35:20,051 SSTableReader.java:496 - Cannot open /home/claude/apache/cassandra/build/test/cassandra/data/system_schema/tables-afddfb9dbc1e30688056eed6c302ba09/nb-41-big; partitioner org.apache.cassandra.dht.ByteOrderedPartitioner does not match system partitioner org.apache.cassandra.dht.Murmur3Partitioner. Note that the default partitioner starting with Cassandra 1.2 is Murmur3Partitioner, so you will need to edit that to match your old partitioner if upgrading. The same tests failed in the StandaloneUpgraderTests on which the StandaloneDowngraderTests are based. After chatting with Jake I added code to set the partitioner using DatabaseDescriptor.setPartitionerUsafe() and a try catch block to make sure it got reset in one test. BOTH tests worked. I then removed the just added code and both tests continued to work. I restarted the IDE and both tests continued to work. So I am not sure how adding and then removing code (including the include statements) can make the tests work. But I wanted to post this here so that if there are other weird cases perhaps we can figure out what is happening.
