diff --git a/externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLog.scala b/externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLog.scala
index 3f37cdf09..67f3d11a6 100644
--- a/externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLog.scala
+++ b/externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLog.scala
@@ -89,8 +89,8 @@ object OperationLog extends Logging {
 
 class OperationLog(path: Path) extends Logging {
 
-  private lazy val writer = Files.newBufferedWriter(path, StandardCharsets.UTF_8)
-  private lazy val reader = Files.newBufferedReader(path, StandardCharsets.UTF_8)
+  private val writer = Files.newBufferedWriter(path, StandardCharsets.UTF_8)
+  private val reader = Files.newBufferedReader(path, StandardCharsets.UTF_8)
 
   /**
    * write log to the operation log file
diff --git a/externals/kyuubi-spark-sql-engine/src/test/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLogSuite.scala b/externals/kyuubi-spark-sql-engine/src/test/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLogSuite.scala
index 82d76d5fb..080d11fa7 100644
--- a/externals/kyuubi-spark-sql-engine/src/test/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLogSuite.scala
+++ b/externals/kyuubi-spark-sql-engine/src/test/scala/org/apache/kyuubi/engine/spark/operation/log/OperationLogSuite.scala
@@ -100,4 +100,19 @@ class OperationLogSuite extends KyuubiFunSuite {
     assert(list2.isEmpty)
     operationLog.close()
   }
+
+  test("exception when creating log files") {
+    val sHandle = SessionHandle(TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V10)
+    val logRoot = Paths.get(OperationLog.LOG_ROOT, sHandle.identifier.toString).toFile
+    logRoot.deleteOnExit()
+    Files.createFile(Paths.get(OperationLog.LOG_ROOT, sHandle.identifier.toString))
+    assert(logRoot.exists())
+    OperationLog.createOperationLogRootDirectory(sHandle)
+    assert(logRoot.isFile)
+    val oHandle = OperationHandle(
+      OperationType.EXECUTE_STATEMENT, TProtocolVersion.HIVE_CLI_SERVICE_PROTOCOL_V10)
+    val log = OperationLog.createOperationLog(sHandle, oHandle)
+    assert(log === null)
+
+  }
 }