Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/21819#discussion_r210500530 --- Diff: external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/JsonUtils.scala --- @@ -95,4 +95,20 @@ private object JsonUtils { } Serialization.write(result) } + + /** + * Write per-topic partition lag as json string + */ + def partitionLags(latestOffsets: Map[TopicPartition, Long], + processedOffsets: Map[TopicPartition, Long]): String = { --- End diff -- Please go ahead if possible.
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