Martijn Visser created FLINK-40748:
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Summary: PreparedSplitterNumericParameters.withBatchSize reads
past maxVal
Key: FLINK-40748
URL: https://issues.apache.org/jira/browse/FLINK-40748
Project: Flink
Issue Type: Bug
Components: Connectors / JDBC
Affects Versions: jdbc-4.1.0
Reporter: Martijn Visser
Assignee: Martijn Visser
Fix For: jdbc-5.0.0, jdbc-4.1.1
`getParameterValues` uses the split formula
`JdbcNumericBetweenParametersProvider` had before FLINK-38046; when the batch
size does not divide the range, `bigBatchNum` goes negative and the last split
ends above `maxVal`, so the source reads rows above the configured upper bound
(`[5, 9]` in batches of 4 gives `[5,7],[8,10]`). `withBatchNum` is not affected
(exhaustive check up to 200 values).
Fix: the last split ends at `maxVal`, and `minVal > maxVal` is rejected as the
provider does.
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