Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/16451#discussion_r95078070
--- Diff:
streaming/src/test/scala/org/apache/spark/streaming/CheckpointSuite.scala ---
@@ -629,7 +629,7 @@ class CheckpointSuite extends TestSuiteBase with
DStreamCheckpointTester
ssc.graph.getInputStreams().head.asInstanceOf[FileInputDStream[_,
_, _]]
val filenames =
fileInputDStream.batchTimeToSelectedFiles.synchronized
{ fileInputDStream.batchTimeToSelectedFiles.values.flatten }
- filenames.map(_.split(File.separator).last.toInt).toSeq.sorted
+ filenames.map(_.split("/").last.toInt).toSeq.sorted
--- End diff --
This is always "/" because `FileInputDStream.batchTimeToSelectedFiles` is
in form of `/a/b/c` via
https://github.com/apache/spark/blob/39e2bad6a866d27c3ca594d15e574a1da3ee84cc/streaming/src/main/scala/org/apache/spark/streaming/dstream/FileInputDStream.scala#L207
```scala
scala> import org.apache.hadoop.fs.Path
import org.apache.hadoop.fs.Path
scala> new Path("C:\\a\\b\\c").toString
res0: String = C:/a/b/c
```
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