HeartSaVioR commented on code in PR #38911:
URL: https://github.com/apache/spark/pull/38911#discussion_r1042164208
##########
connector/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaMicroBatchSourceSuite.scala:
##########
@@ -234,6 +235,108 @@ abstract class KafkaMicroBatchSourceSuiteBase extends
KafkaSourceSuiteBase {
assert(index == 3)
}
+ test("Query with Trigger.AvailableNow should throw error when topic
partitions got unavailable " +
+ "during subsequent batches") {
+ val topic = newTopic()
+ testUtils.createTopic(topic, partitions = 5)
+
+ testUtils.sendMessages(topic, (0 until 15).map { case x =>
+ s"foo-$x"
+ }.toArray, Some(0))
+
+ val reader = spark
+ .readStream
+ .format("kafka")
+ .option("kafka.bootstrap.servers", testUtils.brokerAddress)
+ .option("kafka.metadata.max.age.ms", "1")
+ .option("maxOffsetsPerTrigger", 5)
+ .option("subscribe", topic)
+ .option("startingOffsets", "earliest")
+ // the query should fail regardless of this option
+ .option("failOnDataLoss", "true")
+ .load()
+
+ def startTriggerAvailableNowQuery(): StreamingQuery = {
+ reader.writeStream
+ .foreachBatch((_: Dataset[Row], batchId: Long) => {
+ testUtils.deleteTopic(topic)
+ // create partitions less than the kafka data source figured out as
an end state
+ testUtils.createTopic(topic, partitions = 3)
+ // offset will keep the same
+ testUtils.sendMessages(topic, (0 until 15).map { case x =>
+ s"foo-$x"
+ }.toArray, Some(0))
+ null.asInstanceOf[Unit]
+ })
+ .trigger(Trigger.AvailableNow)
+ .start()
+ }
+
+ val exc = intercept[Exception] {
+ val query = startTriggerAvailableNowQuery()
+ try {
+ assert(query.awaitTermination(streamingTimeout.toMillis))
+ } finally {
+ query.stop()
+ }
+ }
+ TestUtils.assertExceptionMsg(exc, "Some of partitions in Kafka topic(s)
have been lost " +
Review Comment:
New exceptions don't define a new error class. I don't feel like we have
constructed the best practice to apply error class framework to "Data sources",
especially if it's 3rd party one. (Pretty sure Kafka is built-in, but this is
also a reference implementation for 3rd party developers.)
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