Philip Thompson created CASSANDRA-7836:
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Summary: Data loss after moving tokens
Key: CASSANDRA-7836
URL: https://issues.apache.org/jira/browse/CASSANDRA-7836
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: OSX and Ubuntu 14.04
Reporter: Philip Thompson
Fix For: 2.1.1
Attachments: topology_test.py
The dtest topology_test:TestTopology.movement_test is failing on 2.1.0 and
2.1-HEAD. The test, which has been attached, goes through the following
workflow:
- Create an unbalanced three node cluster without vnodes
- Create a keyspace with RF=1
- Load data into the cluster
- Flush the cluster with nodetool flush
- Move the tokens around to balance the cluster, using nodetool move
- Run nodetool cleanup
At this point, the test checks that all 10,000 of the originally inserted rows
are still there. In 2.0.10 that is true, however in 2.1, only ~4000 rows exist.
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