Github user brkyvz commented on a diff in the pull request:
https://github.com/apache/spark/pull/15949#discussion_r89017675
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamExecution.scala
---
@@ -38,6 +40,26 @@ import org.apache.spark.sql.streaming._
import org.apache.spark.util.{Clock, UninterruptibleThread, Utils}
/**
+ * Contains metadata associated with a stream execution. This information
is
+ * persisted to the offset log via the OffsetSeq metadata field. Current
+ * information contained in this object includes:
+ *
+ * 1. currentEventTimeWatermark: The current eventTime watermark, used to
+ * bound the lateness of data that will processed.
+ * 2. currentBatchTimestamp: The current batch processing timestamp
+ */
+case class StreamExecutionMetadata(
+ var currentEventTimeWatermark: Long = 0,
+ var currentBatchTimestamp: Long = 0) {
--- End diff --
Shall we name this as `currentBatchTimestampSecs` to clarify that this is
in seconds?
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