[CASSANDRA-6177] remove all sleeps in the dtests

• Type: Improvement
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Component/s: Test/dtest/python
• Assignee: Unassigned
• Reporter: Brandon Williams
• Created: 09/Oct/13 21:31
• Updated: 30/May/19 06:34

Description

The dtests use a ton of sleep calls for various things, most of which is guessing if Cassandra has finished doing something or not. Guessing is problematic and shouldn't be necessary – a prime example of this is creating a ks or cf. When done over cql, we sleep and hope it's done propagating, but when done over thrift we actually check for schema agreement. We should be able to eliminate the sleeps and reliably detect when it's time for the next step programmatically.