diff --git a/core/pom.xml b/core/pom.xml
index 1df685c8..3e5ee1e7 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -19,18 +19,18 @@
         <dependency>
             <groupId>org.apache.spark</groupId>
             <artifactId>spark-core_2.12</artifactId>
-            <version>3.0.0</version>
+            <version>3.1.1</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
             <artifactId>spark-network-common_2.12</artifactId>
-            <version>3.0.0</version>
+            <version>3.1.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.spark</groupId>
             <artifactId>spark-core_2.12</artifactId>
-            <version>3.0.0</version>
+            <version>3.1.1</version>
             <type>test-jar</type>
             <scope>test</scope>
         </dependency>
@@ -47,7 +47,7 @@
         <dependency>
             <groupId>org.scalatest</groupId>
             <artifactId>scalatest_2.12</artifactId>
-            <version>3.0.3</version>
+            <version>3.1.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/core/src/main/scala/org/apache/spark/shuffle/pmof/PmofShuffleManager.scala b/core/src/main/scala/org/apache/spark/shuffle/pmof/PmofShuffleManager.scala
index cf411061..63b8241b 100644
--- a/core/src/main/scala/org/apache/spark/shuffle/pmof/PmofShuffleManager.scala
+++ b/core/src/main/scala/org/apache/spark/shuffle/pmof/PmofShuffleManager.scala
@@ -59,12 +59,12 @@ private[spark] class PmofShuffleManager(conf: SparkConf) extends ShuffleManager
     }
   }
 
-  override def getReader[K, C](handle: _root_.org.apache.spark.shuffle.ShuffleHandle, startPartition: Int, endPartition: Int, context: _root_.org.apache.spark.TaskContext, readMetrics: ShuffleReadMetricsReporter): _root_.org.apache.spark.shuffle.ShuffleReader[K, C] = {
+  override def getReader[K, C](handle: _root_.org.apache.spark.shuffle.ShuffleHandle, startMapIndex: Int, endMapIndex: Int, startPartition: Int, endPartition: Int, context: _root_.org.apache.spark.TaskContext, readMetrics: ShuffleReadMetricsReporter): _root_.org.apache.spark.shuffle.ShuffleReader[K, C] = {
     val blocksByAddress = SparkEnv.get.mapOutputTracker.getMapSizesByExecutorId(
-      handle.shuffleId, startPartition, endPartition)
+      handle.shuffleId, startMapIndex, endMapIndex, startPartition, endPartition)
     if (pmofConf.enableRdma) {
       new RdmaShuffleReader(handle.asInstanceOf[BaseShuffleHandle[K, _, C]],
-        startPartition, endPartition, context, pmofConf)
+        startMapIndex, endMapIndex, startPartition, endPartition, context, pmofConf)
     } else {
       new BaseShuffleReader(
         handle.asInstanceOf[BaseShuffleHandle[K, _, C]], blocksByAddress, startPartition, endPartition, context, readMetrics, pmofConf)
@@ -100,5 +100,4 @@ private[spark] class PmofShuffleManager(conf: SparkConf) extends ShuffleManager
       new IndexShuffleBlockResolver(conf)
   }
 
-  override def getReaderForRange[K, C](handle: ShuffleHandle, startMapIndex: Int, endMapIndex: Int, startPartition: Int, endPartition: Int, context: TaskContext, metrics: ShuffleReadMetricsReporter): ShuffleReader[K, C] = ???
 }
diff --git a/core/src/main/scala/org/apache/spark/shuffle/pmof/RdmaShuffleReader.scala b/core/src/main/scala/org/apache/spark/shuffle/pmof/RdmaShuffleReader.scala
index 92af5417..c2270592 100644
--- a/core/src/main/scala/org/apache/spark/shuffle/pmof/RdmaShuffleReader.scala
+++ b/core/src/main/scala/org/apache/spark/shuffle/pmof/RdmaShuffleReader.scala
@@ -17,6 +17,8 @@ import org.apache.spark.util.configuration.pmof.PmofConf
   * requesting them from other nodes' block stores.
   */
 private[spark] class RdmaShuffleReader[K, C](handle: BaseShuffleHandle[K, _, C],
+                                             startMapIndex: Int,
+                                             endMapIndex: Int,
                                              startPartition: Int,
                                              endPartition: Int,
                                              context: TaskContext,
@@ -36,7 +38,7 @@ private[spark] class RdmaShuffleReader[K, C](handle: BaseShuffleHandle[K, _, C],
       context,
       PmofTransferService.getTransferServiceInstance(pmofConf, blockManager),
       blockManager,
-      mapOutputTracker.getMapSizesByExecutorId(handle.shuffleId, startPartition, endPartition),
+      mapOutputTracker.getMapSizesByExecutorId(handle.shuffleId, startMapIndex, endMapIndex, startPartition, endPartition),
       serializerManager.wrapStream,
       // Note: we use getSizeAsMb when no suffix is provided for backwards compatibility
       SparkEnv.get.conf.getSizeAsMb("spark.reducer.maxSizeInFlight", "48m") * 1024 * 1024,
diff --git a/core/src/main/scala/org/apache/spark/storage/pmof/PersistentMemoryHandler.scala b/core/src/main/scala/org/apache/spark/storage/pmof/PersistentMemoryHandler.scala
index 8d6900fd..73a58e89 100644
--- a/core/src/main/scala/org/apache/spark/storage/pmof/PersistentMemoryHandler.scala
+++ b/core/src/main/scala/org/apache/spark/storage/pmof/PersistentMemoryHandler.scala
@@ -18,7 +18,10 @@ import org.apache.spark.util.configuration.pmof.PmofConf
 import scala.concurrent.Future
 import scala.concurrent.ExecutionContext.Implicits.global
 
+import scala.util.control.Breaks._
+
 private[spark] class PersistentMemoryHandler(
+    val pmofConf: PmofConf,
     val root_dir: String,
     val path_list: List[String],
     val shuffleId: String,
@@ -87,21 +90,45 @@ private[spark] class PersistentMemoryHandler(
   def getPartitionManagedBuffer(blockId: String): ManagedBuffer = {
     new PmemManagedBuffer(this, blockId)
   }
+  
+  def fileDeletion(path: String): Unit = synchronized {
+    try {
+      if (new File(path).delete()) {
+        logInfo("File deleted successfully: " + poolFile)
+      } else {
+        logWarning("Failed to delete file: " + poolFile)
+      }
+      } catch {
+        case e: Exception => e.printStackTrace()
+      }
+  }
 
   def close(): Unit = synchronized {
+    val timeout = pmofConf.fileEmptyTimeout
+    val interval = pmofConf.fileEmptyInterval
+    val startTime = System.currentTimeMillis()
+    var first = true
       if (isFsdaxFile) {
-        try {
-          if (new File(poolFile).delete()) {
-            logInfo("File deleted successfully: " + poolFile)
-          } else {
-            logWarning("Failed to delete file: " + poolFile)
+        var currentTime = System.currentTimeMillis()
+        breakable{
+          while(currentTime - startTime < timeout * 1000){
+            if(!Files.exists(Paths.get(poolFile))){
+              break
+            }
+            if (!first){
+              /**
+              The slept thread will be terminated immediately
+              Thread.sleep(interval * 1000)
+              **/
+            }
+            fileDeletion(poolFile)
+            currentTime = System.currentTimeMillis()
+            first = false
           }
-        } catch {
-          case e: Exception => e.printStackTrace()
-        }
+        } 
       } else {
-        pmpool.close()
         pmMetaHandler.remove()
+        Runtime.getRuntime.exec("pmempool rm " + poolFile)
       }
   }
 
@@ -119,7 +146,7 @@ object PersistentMemoryHandler {
   private var stopped: Boolean = _
   def getPersistentMemoryHandler(pmofConf: PmofConf, root_dir: String, path_arg: List[String], shuffleBlockId: String, pmPoolSize: Long): PersistentMemoryHandler = synchronized {
     if (persistentMemoryHandler == null) {
-      persistentMemoryHandler = new PersistentMemoryHandler(root_dir, path_arg, shuffleBlockId, pmPoolSize)
+      persistentMemoryHandler = new PersistentMemoryHandler(pmofConf, root_dir, path_arg, shuffleBlockId, pmPoolSize)
       persistentMemoryHandler.log("Use persistentMemoryHandler Object: " + this)
       if (pmofConf.enableRdma) {
         val blockManager = SparkEnv.get.blockManager
diff --git a/core/src/main/scala/org/apache/spark/util/configuration/pmof/PmofConf.scala b/core/src/main/scala/org/apache/spark/util/configuration/pmof/PmofConf.scala
index f3551704..fe8c0453 100644
--- a/core/src/main/scala/org/apache/spark/util/configuration/pmof/PmofConf.scala
+++ b/core/src/main/scala/org/apache/spark/util/configuration/pmof/PmofConf.scala
@@ -27,4 +27,6 @@ class PmofConf(conf: SparkConf) {
   val shuffleBlockSize: Int = conf.getInt("spark.shuffle.pmof.shuffle_block_size", defaultValue = 2048)
   val pmemCapacity: Long = conf.getLong("spark.shuffle.pmof.pmem_capacity", defaultValue = 264239054848L)
   val pmemCoreMap = conf.get("spark.shuffle.pmof.dev_core_set", defaultValue = "/dev/dax0.0:0-17,36-53").split(";").map(_.trim).map(_.split(":")).map(arr => arr(0) -> arr(1)).toMap
+  val fileEmptyTimeout: Int = conf.getInt("spark.shuffle.pmof.file_empty_timeout", defaultValue = 30)
+  val fileEmptyInterval: Int = conf.getInt("spark.shuffle.pmof.file_empty_interval", defaultValue = 5)
 }