Github user frreiss commented on a diff in the pull request:
https://github.com/apache/spark/pull/14553#discussion_r76498251
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/StreamExecution.scala
---
@@ -244,6 +250,21 @@ class StreamExecution(
logDebug(s"Resuming with committed offsets: $committedOffsets")
}
+ // Compare the offsets we just read from the checkpoint against the
+ // sources' own checkpoint data.
+ val offsetChanges = mutable.Map[Source, Offset]()
+ committedOffsets.foreach {
+ case (src, checkptOffset) =>
+ val srcOffset = src.getMinOffset
+ if (srcOffset.isDefined && srcOffset.get > checkptOffset) {
+ logWarning(s"Source $src lost offsets between $checkptOffset
" +
+ s"and ${srcOffset.get} when resuming. Skipping ahead to
${srcOffset.get}.")
+ offsetChanges += (src -> srcOffset.get)
+ }
+ }
+ committedOffsets ++= offsetChanges
+
+
--- End diff --
Fixed in my local copy.
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