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https://issues.apache.org/jira/browse/CASSANDRA-19325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yifan Cai updated CASSANDRA-19325:
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Bug Category: Parent values: Correctness(12982)Level 1 values: Recoverable
Corruption / Loss(12986)
Complexity: Normal
Component/s: Analytics Library
Discovered By: Code Inspection
Severity: Normal
Status: Open (was: Triage Needed)
PR: [https://github.com/apache/cassandra-analytics/pull/34]
CI:
[https://app.circleci.com/pipelines/github/yifan-c/cassandra-analytics/10/workflows/5e160773-b5ca-4096-8bd0-3738b3e4599f]
> [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
> Components: Analytics Library
> Reporter: Yifan Cai
> Assignee: Yifan Cai
> Priority: Normal
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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