GitHub user uncleGen opened a pull request: https://github.com/apache/spark/pull/17209
[SPARK-19853][SS] uppercase kafka topics fail when startingOffsets are SpecificOffsets ## What changes were proposed in this pull request? 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. KafkaSourceProvider.scala: ``` val startingOffsets = caseInsensitiveParams.get(STARTING_OFFSETS_OPTION_KEY).map(_.trim.toLowerCase) match { case Some("latest") => LatestOffsets case Some("earliest") => EarliestOffsets case Some(json) => SpecificOffsets(JsonUtils.partitionOffsets(json)) case None => LatestOffsets } ``` ## How was this patch tested? Jenkins You can merge this pull request into a Git repository by running: $ git pull https://github.com/uncleGen/spark SPARK-19853 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/17209.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #17209 ---- commit e2a26bf8fb8554fb030e7f5bd2197befb9ed55e2 Author: uncleGen <husty...@gmail.com> Date: 2017-03-08T11:59:17Z Uppercase Kafka topics fail when startingOffsets are SpecificOffsets ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org