Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/5853#discussion_r29543300
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/rdd/WriteAheadLogBackedBlockRDD.scala
---
@@ -108,9 +110,13 @@ class WriteAheadLogBackedBlockRDD[T: ClassTag](
// writing log data. However, the directory is not needed if
data needs to be read, hence
// a dummy path is provided to satisfy the method parameter
requirements.
// FileBasedWriteAheadLog will not create any file or directory
at that path.
- val dummyDirectory = FileUtils.getTempDirectoryPath()
+ // FileBasedWriteAheadLog will not create any file or directory
at that path. Also,
+ // this dummy directory should not already exist otherwise the
WAL will try to recover
+ // past events from the directory and throw errors.
+ val nonExistentDirectory = new File(
+ FileUtils.getTempDirectory(),
UUID.randomUUID().toString).getAbsolutePath
--- End diff --
Actually it cannot be Utils.createTempDir because that actually created the
directory, which I dont want it to. But I can very easily replace
FileUtils.getTimeDirectory with System.getProperty("java.io.tmpDir")
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