diff --git a/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/StateStoreRDDSuite.scala b/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/StateStoreRDDSuite.scala
index 65b39f0fbd73d..579a364ebc3e5 100644
--- a/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/StateStoreRDDSuite.scala
+++ b/sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/state/StateStoreRDDSuite.scala
@@ -55,7 +55,7 @@ class StateStoreRDDSuite extends SparkFunSuite with BeforeAndAfter with BeforeAn
 
   test("versioning and immutability") {
     withSparkSession(SparkSession.builder.config(sparkConf).getOrCreate()) { spark =>
-      val path = Utils.createDirectory(tempDir, Random.nextString(10)).toString
+      val path = Utils.createDirectory(tempDir, Random.nextFloat.toString).toString
       val rdd1 = makeRDD(spark.sparkContext, Seq("a", "b", "a")).mapPartitionsWithStateStore(
             spark.sqlContext, operatorStateInfo(path, version = 0), keySchema, valueSchema, None)(
             increment)
@@ -73,7 +73,7 @@ class StateStoreRDDSuite extends SparkFunSuite with BeforeAndAfter with BeforeAn
   }
 
   test("recovering from files") {
-    val path = Utils.createDirectory(tempDir, Random.nextString(10)).toString
+    val path = Utils.createDirectory(tempDir, Random.nextFloat.toString).toString
 
     def makeStoreRDD(
         spark: SparkSession,
@@ -101,7 +101,7 @@ class StateStoreRDDSuite extends SparkFunSuite with BeforeAndAfter with BeforeAn
   test("usage with iterators - only gets and only puts") {
     withSparkSession(SparkSession.builder.config(sparkConf).getOrCreate()) { spark =>
       implicit val sqlContext = spark.sqlContext
-      val path = Utils.createDirectory(tempDir, Random.nextString(10)).toString
+      val path = Utils.createDirectory(tempDir, Random.nextFloat.toString).toString
       val opId = 0
 
       // Returns an iterator of the incremented value made into the store
@@ -149,7 +149,7 @@ class StateStoreRDDSuite extends SparkFunSuite with BeforeAndAfter with BeforeAn
     quietly {
       val queryRunId = UUID.randomUUID
       val opId = 0
-      val path = Utils.createDirectory(tempDir, Random.nextString(10)).toString
+      val path = Utils.createDirectory(tempDir, Random.nextFloat.toString).toString
 
       withSparkSession(SparkSession.builder.config(sparkConf).getOrCreate()) { spark =>
         implicit val sqlContext = spark.sqlContext
@@ -189,7 +189,7 @@ class StateStoreRDDSuite extends SparkFunSuite with BeforeAndAfter with BeforeAn
           .config(sparkConf.setMaster("local-cluster[2, 1, 1024]"))
           .getOrCreate()) { spark =>
         implicit val sqlContext = spark.sqlContext
-        val path = Utils.createDirectory(tempDir, Random.nextString(10)).toString
+        val path = Utils.createDirectory(tempDir, Random.nextFloat.toString).toString
         val opId = 0
         val rdd1 = makeRDD(spark.sparkContext, Seq("a", "b", "a")).mapPartitionsWithStateStore(
           sqlContext, operatorStateInfo(path, version = 0), keySchema, valueSchema, None)(increment)