HeartSaVioR commented on a change in pull request #32609:
URL: https://github.com/apache/spark/pull/32609#discussion_r638338036
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File path:
external/kafka-0-10-sql/src/main/scala/org/apache/spark/sql/kafka010/KafkaOffsetReader.scala
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@@ -77,6 +77,19 @@ private[kafka010] trait KafkaOffsetReader {
partitionTimestamps: Map[TopicPartition, Long],
failsOnNoMatchingOffset: Boolean): KafkaSourceOffset
+ /**
+ * Resolves the specific offsets based on timestamp per all topic-partitions
being subscribed.
+ * The returned offset for each partition is the earliest offset whose
timestamp is greater
+ * than or equal to the given timestamp in the corresponding partition. If
the matched offset
Review comment:
Let me refine the words. Basically it queries to Kafka and we are
explaining the mechanism, it seems OK to say `If Kafka doesn't return the
matched offset`.
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