diff --git a/mllib-dal/src/main/native/OneCCL.cpp b/mllib-dal/src/main/native/OneCCL.cpp
index 15bfd62f4..377ad7c9c 100644
--- a/mllib-dal/src/main/native/OneCCL.cpp
+++ b/mllib-dal/src/main/native/OneCCL.cpp
@@ -135,7 +135,6 @@ JNIEXPORT jint JNICALL Java_com_intel_oap_mllib_OneCCL_00024_c_1init(
     }
     logger::println(logger::INFO, "OneCCL (native): ccl::create_communicator(size, rank, kvs)");
     logger::println(logger::INFO, "ccl::create_communicator %d ,%d", size, rank);
-    auto comm = ccl::create_communicator(size, rank, kvs);
     {
         std::lock_guard<std::mutex> lock(g_mtx);
         g_comms.push_back(ccl::create_communicator(size, rank, kvs));
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/NaiveBayesDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/NaiveBayesDALImpl.scala
index cf3a7e987..822625149 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/NaiveBayesDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/NaiveBayesDALImpl.scala
@@ -25,6 +25,8 @@ import org.apache.spark.ml.linalg.{Matrices, Matrix, Vector}
 import org.apache.spark.ml.util.Instrumentation
 import org.apache.spark.sql.Dataset
 
+import java.time.Instant
+
 class NaiveBayesDALModel private[mllib] (
     val uid: String,
     val pi: Vector,
@@ -41,7 +43,7 @@ class NaiveBayesDALImpl(val uid: String,
             labelCol: String,
             featuresCol: String): NaiveBayesDALModel = {
     val sparkContext = labeledPoints.rdd.sparkContext
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     val kvsIPPort = getOneCCLIPPort(labeledPoints.rdd)
 
     val labeledPointsTables = if (OneDAL.isDenseDataset(labeledPoints, featuresCol)) {
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/RandomForestClassifierDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/RandomForestClassifierDALImpl.scala
index 9262e8ac8..9defb9d29 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/RandomForestClassifierDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/classification/RandomForestClassifierDALImpl.scala
@@ -29,6 +29,7 @@ import org.apache.spark.sql.Dataset
 import org.apache.spark.ml.tree
 import org.apache.spark.mllib.tree.model.ImpurityStats
 
+import java.time.Instant
 import java.util
 import java.util.{ArrayList, Map}
 import scala.collection.mutable.HashMap
@@ -58,7 +59,7 @@ class RandomForestClassifierDALImpl(val uid: String,
     val metrics_name = "RFClassifier_" + executorNum
     val rfcTimer = new Utils.AlgoTimeMetrics(metrics_name, sparkContext)
     val useDevice = sparkContext.getConf.get("spark.oap.mllib.device", Utils.DefaultComputeDevice)
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     // used run Random Forest unit test
     val isTest = sparkContext.getConf.getBoolean("spark.oap.mllib.isTest", false)
     val computeDevice = Common.ComputeDevice.getDeviceByName(useDevice)
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/feature/PCADALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/feature/PCADALImpl.scala
index 961eaa986..576d2aa2f 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/feature/PCADALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/feature/PCADALImpl.scala
@@ -17,6 +17,7 @@
 package com.intel.oap.mllib.feature
 
 import com.intel.daal.datamanagement.data.{HomogenNumericTable, NumericTable}
+
 import java.nio.DoubleBuffer
 import com.intel.oap.mllib.Utils.getOneCCLIPPort
 import com.intel.oap.mllib.{OneCCL, OneDAL, Service, Utils}
@@ -32,6 +33,8 @@ import java.util.Arrays
 import com.intel.oneapi.dal.table.{Common, HomogenTable, RowAccessor}
 import org.apache.spark.storage.StorageLevel
 
+import java.time.Instant
+
 class PCADALModel private[mllib] (
   val k: Int,
   val pc: OldDenseMatrix,
@@ -48,7 +51,7 @@ class PCADALImpl(val k: Int,
     val metrics_name = "PCA_" + executorNum
     val pcaTimer = new Utils.AlgoTimeMetrics(metrics_name, sparkContext)
     val useDevice = sparkContext.getConf.get("spark.oap.mllib.device", Utils.DefaultComputeDevice)
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     val computeDevice = Common.ComputeDevice.getDeviceByName(useDevice)
     pcaTimer.record("Preprocessing")
 
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/recommendation/ALSDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/recommendation/ALSDALImpl.scala
index 7847386a5..b6ec7077d 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/recommendation/ALSDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/recommendation/ALSDALImpl.scala
@@ -26,6 +26,7 @@ import org.apache.spark.ml.recommendation.ALS.Rating
 import org.apache.spark.rdd.RDD
 
 import java.nio.{ByteBuffer, ByteOrder, FloatBuffer}
+import java.time.Instant
 import scala.collection.mutable.ArrayBuffer
 import scala.reflect.ClassTag
 
@@ -57,7 +58,8 @@ class ALSDALImpl[@specialized(Int, Long) ID: ClassTag]( data: RDD[Rating[ID]],
   def train(): (RDD[(ID, Array[Float])], RDD[(ID, Array[Float])]) = {
     val executorNum = Utils.sparkExecutorNum(data.sparkContext)
     val executorCores = Utils.sparkExecutorCores()
-    val storePath = data.sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = data.sparkContext.getConf
+      .get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
 
     val nFeatures = data.max()(new Ordering[Rating[ID]]() {
       override def compare(x: Rating[ID], y: Rating[ID]): Int =
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/LinearRegressionDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/LinearRegressionDALImpl.scala
index c278bfb7e..f127b10a3 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/LinearRegressionDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/LinearRegressionDALImpl.scala
@@ -29,6 +29,8 @@ import org.apache.spark.mllib.linalg.{Vector => OldVector, Vectors => OldVectors
 import org.apache.spark.sql.Dataset
 import org.apache.spark.rdd.RDD
 
+import java.time.Instant
+
 
 /**
  * Model fitted by [[LinearRegressionDALImpl]].
@@ -74,7 +76,7 @@ class LinearRegressionDALImpl( val fitIntercept: Boolean,
     val metrics_name = "LinearRegression_" + executorNum
     val lrTimer = new Utils.AlgoTimeMetrics(metrics_name, sparkContext)
     val useDevice = sparkContext.getConf.get("spark.oap.mllib.device", Utils.DefaultComputeDevice)
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     val computeDevice = Common.ComputeDevice.getDeviceByName(useDevice)
 
     val isTest = sparkContext.getConf.getBoolean("spark.oap.mllib.isTest", false)
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/RandomForestRegressorDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/RandomForestRegressorDALImpl.scala
index eb814de9a..a7baa0365 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/RandomForestRegressorDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/regression/RandomForestRegressorDALImpl.scala
@@ -25,6 +25,7 @@ import org.apache.spark.ml.classification.DecisionTreeClassificationModel
 import org.apache.spark.ml.linalg.Matrix
 import org.apache.spark.sql.Dataset
 
+import java.time.Instant
 import java.util
 import scala.collection.JavaConversions._
 
@@ -50,7 +51,7 @@ class RandomForestRegressorDALImpl(val uid: String,
     val metrics_name = "RFRegressor_" + executorNum
     val rfrTimer = new Utils.AlgoTimeMetrics(metrics_name, sparkContext)
     val useDevice = sparkContext.getConf.get("spark.oap.mllib.device", Utils.DefaultComputeDevice)
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     val computeDevice = Common.ComputeDevice.getDeviceByName(useDevice)
     // used run Random Forest unit test
     val isTest = sparkContext.getConf.getBoolean("spark.oap.mllib.isTest", false)
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/CorrelationDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/CorrelationDALImpl.scala
index 92d6ee1b4..3cccb1202 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/CorrelationDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/CorrelationDALImpl.scala
@@ -24,6 +24,8 @@ import org.apache.spark.internal.Logging
 import org.apache.spark.ml.linalg.{Matrix, Vector}
 import org.apache.spark.rdd.RDD
 
+import java.time.Instant
+
 class CorrelationDALImpl(
                           val executorNum: Int,
                           val executorCores: Int)
@@ -34,7 +36,7 @@ class CorrelationDALImpl(
     val metrics_name = "Correlation_" + executorNum
     val corTimer = new Utils.AlgoTimeMetrics(metrics_name, sparkContext)
     val useDevice = sparkContext.getConf.get("spark.oap.mllib.device", Utils.DefaultComputeDevice)
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     val computeDevice = Common.ComputeDevice.getDeviceByName(useDevice)
     corTimer.record("Preprocessing")
 
diff --git a/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/SummarizerDALImpl.scala b/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/SummarizerDALImpl.scala
index 89c59a39e..c8bc25e4e 100644
--- a/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/SummarizerDALImpl.scala
+++ b/mllib-dal/src/main/scala/com/intel/oap/mllib/stat/SummarizerDALImpl.scala
@@ -26,6 +26,8 @@ import org.apache.spark.rdd.RDD
 import com.intel.oap.mllib.Utils.getOneCCLIPPort
 import com.intel.oneapi.dal.table.Common
 
+import java.time.Instant
+
 class SummarizerDALImpl(val executorNum: Int,
                         val executorCores: Int)
   extends Serializable with Logging {
@@ -35,7 +37,7 @@ class SummarizerDALImpl(val executorNum: Int,
     val metrics_name = "Summarizer_" + executorNum
     val sumTimer = new Utils.AlgoTimeMetrics(metrics_name, sparkContext)
     val useDevice = sparkContext.getConf.get("spark.oap.mllib.device", Utils.DefaultComputeDevice)
-    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath")
+    val storePath = sparkContext.getConf.get("spark.oap.mllib.kvsStorePath") + "/" + Instant.now()
     val computeDevice = Common.ComputeDevice.getDeviceByName(useDevice)
     sumTimer.record("Preprocessing")