Github user tdas commented on a diff in the pull request: https://github.com/apache/spark/pull/20710#discussion_r171993716 --- Diff: sql/core/src/main/java/org/apache/spark/sql/sources/v2/writer/DataWriterFactory.java --- @@ -48,6 +48,9 @@ * same task id but different attempt number, which means there are multiple * tasks with the same task id running at the same time. Implementations can * use this attempt number to distinguish writers of different task attempts. + * @param epochId A monotonically increasing id for streaming queries that are split in to + * discrete periods of execution. For queries that execute as a single batch, this --- End diff -- Also, make it clear that, this is batchId for MicroBatch processing and epochId for Continuous processing
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