[CASSANDRA-16345] Test SSTables are in the correct location after range movement with 1/5/20 data directories

• Type: Sub-task
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0-rc1, 4.0
• Component/s: Test/benchmark
• Change Category: Quality Assurance
• Complexity: Normal
• Platform: All

Source Control Link

none

Test and Documentation Plan

Test Plan

1. Create 4 nodes cluster and create keyspace with RF == 3
2. Run data prepopulation
3. Run steady state load for X seconds as Phase 1.
4. Trigger token move and wait for completion
5. Let the traffic continue for Y seconds, then trigger relocatesstable and wait for completion
6. Let the traffic continue for Z seconds, then trigger relocatesstable again.

The expectation is that the second relocatesstable should be a no-op.

The workload used in the test was generated from tlp-stress.

Steady state load Read : Write : Delete == 5 : 4 : 1, and the QPS was kept at 3K/s.

• Assignee: Yifan Cai
• Reporter: Yifan Cai

Authors

Yifan Cai

Reviewers

Marcus Eriksson

• Created: 12/Dec/20 00:34
• Updated: 24/Feb/21 14:33
• Resolved: 24/Feb/21 14:12

Description

The testing cluster should be pre-populated with ~200GB data in each node. Change the token ranges and verify that each data directory only contains SSTables belongs to it. In other word, no SSTables are relocated by running nodetool "relocatesstables". Both LCS and STCS need to be covered.

Issue Links

• relates to: CASSANDRA-16460 Document the side-effect of Zero Copy Streaming when in a multiple data directories setup