Yifan Cai created CASSANDRA-19325:
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Summary: [Analytics] Fix range splitting that can produce
overlapping ranges
Key: CASSANDRA-19325
URL: https://issues.apache.org/jira/browse/CASSANDRA-19325
Project: Cassandra
Issue Type: Bug
Reporter: Yifan Cai
Assignee: Yifan Cai
The range splitting implementation can produce the following false results.
- Given a tiny range, it can produce duplicated ranges, leading to spark
executors working on the same data set.
- The produced ranges are closed on both ends, making the same tokens being
shared by 2 ranges, leading to data duplication.
Besides the splitting error, during write process, the split sub-ranges are
unordered. It does not seem to affect correctness, but can be confusing.
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