Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/18799#discussion_r132050517
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/HDFSMetadataLog.scala
---
@@ -437,4 +441,48 @@ object HDFSMetadataLog {
}
}
}
+
+ /**
+ * Verify if batchIds are continuous and between `startId` and `endId`.
+ *
+ * @param batchIds the sorted ids to verify.
+ * @param startId the start id. If it's set, batchIds should start with
this id.
+ * @param endId the start id. If it's set, batchIds should end with this
id.
+ */
+ def verifyBatchIds(batchIds: Seq[Long], startId: Option[Long], endId:
Option[Long]): Unit = {
+ // Verify that we can get all batches between `startId` and `endId`.
+ if (startId.isDefined || endId.isDefined) {
+ if (batchIds.isEmpty) {
+ throw new IllegalStateException(s"batch
${startId.orElse(endId).get} doesn't exist")
--- End diff --
would be good to print the range that was asked for. otherwise its hard to
see what was expected while debugging.
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