conn_config = "cache_size=10MB"

cursor = self.session.open_cursor(self.uri) 
self.session.begin_transaction() 
for i in range(1,1000000000):
 cursor[i] = str(i)

 
The test outputs the following error:

_wiredtiger.WiredTigerRollbackError: WT_ROLLBACK: conflict between concurrent operations 

The error mentions that a rollback occurred due to conflict between concurrent operations, however, that is not the case. The actual reason for the rollback is increased cache pressure. This is misleading and should be fixed.