Chris Bowden created SPARK-19853:
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Summary: Uppercase Kafka topics fail when startingOffsets are
SpecificOffsets
Key: SPARK-19853
URL: https://issues.apache.org/jira/browse/SPARK-19853
Project: Spark
Issue Type: Bug
Components: Structured Streaming
Affects Versions: 2.1.0
Reporter: Chris Bowden
Priority: Trivial
When using the KafkaSource with Structured Streaming, consumer assignments are
not what the user expects if startingOffsets is set to an explicit set of
topics/partitions in JSON where the topic(s) happen to have uppercase
characters. When StartingOffsets is constructed, the original string value from
options is transformed toLowerCase to make matching on "earliest" and "latest"
case insensitive. However, the toLowerCase json is passed to SpecificOffsets
for the terminal condition, so topic names may not be what the user intended by
the time assignments are made with the underlying KafkaConsumer.
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