Github user kunalkhamar commented on a diff in the pull request:
https://github.com/apache/spark/pull/17216#discussion_r106033678
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamSuite.scala ---
@@ -389,6 +390,61 @@ class StreamSuite extends StreamTest {
query.stop()
assert(query.exception.isEmpty)
}
+
+ test("SPARK-19873: streaming aggregation with change in number of
partitions") {
+ val inputData = MemoryStream[(Int, Int)]
+ val agg = inputData.toDS().groupBy("_1").count()
+
+ testStream(agg, OutputMode.Complete())(
+ AddData(inputData, (1, 0), (2, 0)),
+ StartStream(additionalConfs = Map(SQLConf.SHUFFLE_PARTITIONS.key ->
"2")),
+ CheckAnswer((1, 1), (2, 1)),
+ StopStream,
+ AddData(inputData, (3, 0), (2, 0)),
+ StartStream(additionalConfs = Map(SQLConf.SHUFFLE_PARTITIONS.key ->
"5")),
+ CheckAnswer((1, 1), (2, 2), (3, 1)),
+ StopStream,
+ AddData(inputData, (3, 0), (1, 0)),
+ StartStream(additionalConfs = Map(SQLConf.SHUFFLE_PARTITIONS.key ->
"1")),
+ CheckAnswer((1, 2), (2, 2), (3, 2)))
+ }
+
+ test("SPARK-19873: backward compat with checkpoints that do not record
shuffle partitions") {
+ val inputData = MemoryStream[Int]
+ inputData.addData(1, 2, 3, 4)
+ inputData.addData(3, 4, 5, 6)
+ inputData.addData(5, 6, 7, 8)
+
+ val resourceUri =
+
this.getClass.getResource("/structured-streaming/checkpoint-version-2.1.0").toURI
+ val checkpointDir = new File(resourceUri).getCanonicalPath
+ val query = inputData
+ .toDF()
+ .groupBy($"value")
+ .agg(count("*"))
+ .writeStream
+ .queryName("counts")
+ .outputMode("complete")
+ .option("checkpointLocation", checkpointDir)
+ .format("memory")
+
+ // Checkpoint data was generated by a query with 10 shuffle partitions.
+ // Test if recovery from checkpoint is successful.
+ withSQLConf(SQLConf.SHUFFLE_PARTITIONS.key -> "10") {
+ query.start().processAllAvailable()
+
+ QueryTest.checkAnswer(spark.table("counts").toDF(),
+ Row("1", 1) :: Row("2", 1) :: Row("3", 2) :: Row("4", 2) ::
+ Row("5", 2) :: Row("6", 2) :: Row("7", 1) :: Row("8", 1) :: Nil)
+ }
+
+ // If the number of partitions is greater, should throw exception.
+ withSQLConf(SQLConf.SHUFFLE_PARTITIONS.key -> "15") {
--- End diff --
Seems okay to me. Underlying cause is `FileNotFoundException`. Error
message indicates _Error reading delta file
/Users/path/to/checkpoint/state/[operator]/[partition]/[batch].delta_
> [info] - SPARK-19873: backward compatibility - recover with wrong num
shuffle partitions *** FAILED *** (12 seconds, 98 milliseconds)
[info] org.apache.spark.sql.streaming.StreamingQueryException: Query
badQuery [id = dddc5e7f-1e71-454c-8362-de184444fb5a, runId =
b2960c74-257a-4eb1-b242-61d13e20655f] terminated with exception: Job aborted
due to stage failure: Task 10 in stage 1.0 failed 1 times, most recent failure:
Lost task 10.0 in stage 1.0 (TID 11, localhost, executor driver):
java.lang.IllegalStateException: Error reading delta file
/Users/kunalkhamar/spark/target/tmp/spark-2816c3be-610f-450c-a821-6d0c68a12d91/state/0/10/1.delta
of HDFSStateStoreProvider[id = (op=0, part=10), dir =
/Users/kunalkhamar/spark/target/tmp/spark-2816c3be-610f-450c-a821-6d0c68a12d91/state/0/10]:
/Users/kunalkhamar/spark/target/tmp/spark-2816c3be-610f-450c-a821-6d0c68a12d91/state/0/10/1.delta
does not exist
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider.org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$updateFromDeltaFile(HDFSBackedStateStoreProvider.scala:384)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider$$anonfun$org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$loadMap$1$$anonfun$6.apply(HDFSBackedStateStoreProvider.scala:336)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider$$anonfun$org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$loadMap$1$$anonfun$6.apply(HDFSBackedStateStoreProvider.scala:333)
[info] at scala.Option.getOrElse(Option.scala:121)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider$$anonfun$org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$loadMap$1.apply(HDFSBackedStateStoreProvider.scala:333)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider$$anonfun$org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$loadMap$1.apply(HDFSBackedStateStoreProvider.scala:332)
[info] at scala.Option.getOrElse(Option.scala:121)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider.org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$loadMap(HDFSBackedStateStoreProvider.scala:332)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider.getStore(HDFSBackedStateStoreProvider.scala:239)
[info] at
org.apache.spark.sql.execution.streaming.state.StateStore$.get(StateStore.scala:191)
[info] at
org.apache.spark.sql.execution.streaming.state.StateStoreRDD.compute(StateStoreRDD.scala:61)
[info] at
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:323)
[info] at org.apache.spark.rdd.RDD.iterator(RDD.scala:287)
[info] at
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
[info] at
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:323)
[info] at org.apache.spark.rdd.RDD.iterator(RDD.scala:287)
[info] at
org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)
[info] at
org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:323)
[info] at org.apache.spark.rdd.RDD.iterator(RDD.scala:287)
[info] at
org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
[info] at org.apache.spark.scheduler.Task.run(Task.scala:108)
[info] at
org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:317)
[info] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[info] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[info] at java.lang.Thread.run(Thread.java:745)
[info] Caused by: java.io.FileNotFoundException: File
/Users/kunalkhamar/spark/target/tmp/spark-2816c3be-610f-450c-a821-6d0c68a12d91/state/0/10/1.delta
does not exist
[info] at
org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(RawLocalFileSystem.java:539)
[info] at
org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(RawLocalFileSystem.java:752)
[info] at
org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:529)
[info] at
org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:409)
[info] at
org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:142)
[info] at
org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:346)
[info] at
org.apache.spark.DebugFilesystem.open(DebugFilesystem.scala:61)
[info] at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:766)
[info] at
org.apache.spark.sql.execution.streaming.state.HDFSBackedStateStoreProvider.org$apache$spark$sql$execution$streaming$state$HDFSBackedStateStoreProvider$$updateFromDeltaFile(HDFSBackedStateStoreProvider.scala:381)
[info] ... 24 more
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