Github user frreiss commented on a diff in the pull request:
https://github.com/apache/spark/pull/15067#discussion_r79662093
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamingQuerySuite.scala
---
@@ -125,6 +125,32 @@ class StreamingQuerySuite extends StreamTest with
BeforeAndAfter {
)
}
+ testQuietly("StreamExecution metadata garbarge collection") {
+ val inputData = MemoryStream[Int]
+ val mapped = inputData.toDS().map(6 / _)
+
+ // Run a few batches through the application
+ testStream(mapped)(
+ AddData(inputData, 1, 2),
+ CheckAnswer(6, 3),
+ AddData(inputData, 1, 2),
+ CheckAnswer(6, 3, 6, 3),
+ AddData(inputData, 4, 6),
+ CheckAnswer(6, 3, 6, 3, 1, 1),
+
+ // Three batches have run, but only one set of metadata should be
present
+ AssertOnQuery(
+ q => {
+ val metadataLogDir = new
java.io.File(q.offsetLog.metadataPath.toString)
+ val logFileNames =
metadataLogDir.listFiles().toSeq.map(_.getName())
+ val toTest = logFileNames.filter(! _.endsWith(".crc")) //
Workaround for SPARK-17475
+ toTest.size == 1 && toTest.head == "2"
--- End diff --
Oops, didn't notice I had left that "true" at the end of that block of
code. @petermaxlee , let me know if you need help preparing the final version
for merge.
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