[SPARK-26496][SS][TEST] Avoid to use Random.nextString in StreamingIn…

…nerJoinSuite ## What changes were proposed in this pull request? Similar with apache#21446. Looks random string is not quite safe as a directory name. ```scala scala> val prefix = Random.nextString(10); val dir = new File("/tmp", "del_" + prefix + "-" + UUID.randomUUID.toString); dir.mkdirs() prefix: String = 窽텘⒘駖ⵚ駢⡞Ρ닋੎ dir: java.io.File = /tmp/del_窽텘⒘駖ⵚ駢⡞Ρ닋੎-a3f99855-c429-47a0-a108-47bca6905745 res40: Boolean = false // nope, didn't like this one ``` ## How was this patch tested? Unit test was added, and manually. Closes apache#23405 from HyukjinKwon/SPARK-26496. Authored-by: Hyukjin Kwon <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]> (cherry picked from commit e63243d) Signed-off-by: Dongjoon Hyun <[email protected]>
kai-chi · Aug 1, 2019 · 6612588 · 6612588
1 parent 9632058
commit 6612588
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamingJoinSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamingJoinSuite.scala
@@ -350,7 +350,7 @@ class StreamingInnerJoinSuite extends StreamTest with StateStoreMetricsTest with
     withTempDir { tempDir =>
       val queryId = UUID.randomUUID
       val opId = 0
-      val path = Utils.createDirectory(tempDir.getAbsolutePath, Random.nextString(10)).toString
+      val path = Utils.createDirectory(tempDir.getAbsolutePath, Random.nextFloat.toString).toString
       val stateInfo = StatefulOperatorStateInfo(path, queryId, opId, 0L, 5)
 
       implicit val sqlContext = spark.sqlContext