diff --git a/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeBytesBufferArray.scala b/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeBytesBufferArray.scala
index 7192586cfc0bb..57d961b575d09 100644
--- a/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeBytesBufferArray.scala
+++ b/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeBytesBufferArray.scala
@@ -76,15 +76,13 @@ case class UnsafeBytesBufferArray(
     assert(bytesBuffer.length == bytesBufferLengths(index))
     // first to allocate underlying long array
     if (null == longArray && index == 0) {
-      log.debug(s"allocate array $totalBytes, actual longArray size ${(totalBytes + 7) / 8}")
+      log.warn(s"allocate array $totalBytes, actual longArray size ${(totalBytes + 7) / 8}")
       longArray = allocateArray((totalBytes + 7) / 8)
     }
-    if (log.isDebugEnabled) {
-      log.debug(s"put bytesBuffer at index $index bytesBuffer's length is ${bytesBuffer.length}")
-      log.debug(
-        s"bytesBuffer at index $index " +
-          s"digest ${calculateMD5(bytesBuffer).mkString("Array(", ", ", ")")}")
-    }
+    log.warn(s"put bytesBuffer at index $index bytesBuffer's length is ${bytesBuffer.length}")
+    log.warn(
+      s"bytesBuffer at index $index " +
+        s"digest ${calculateMD5(bytesBuffer).mkString("Array(", ", ", ")")}")
     Platform.copyMemory(
       bytesBuffer,
       Platform.BYTE_ARRAY_OFFSET,
@@ -104,18 +102,16 @@ case class UnsafeBytesBufferArray(
       return new Array[Byte](0)
     }
     val bytes = new Array[Byte](bytesBufferLengths(index))
-    log.debug(s"get bytesBuffer at index $index bytesBuffer length ${bytes.length}")
+    log.warn(s"get bytesBuffer at index $index bytesBuffer length ${bytes.length}")
     Platform.copyMemory(
       longArray.getBaseObject,
       longArray.getBaseOffset + bytesBufferOffset(index),
       bytes,
       Platform.BYTE_ARRAY_OFFSET,
       bytesBufferLengths(index))
-    if (log.isDebugEnabled) {
-      log.debug(
-        s"get bytesBuffer at index $index " +
-          s"digest ${calculateMD5(bytes).mkString("Array(", ", ", ")")}")
-    }
+    log.warn(
+      s"get bytesBuffer at index $index " +
+        s"digest ${calculateMD5(bytes).mkString("Array(", ", ", ")")}")
     bytes
   }
 
@@ -141,7 +137,7 @@ case class UnsafeBytesBufferArray(
   override def finalize(): Unit = {
     try {
       if (longArray != null) {
-        log.debug(s"BytesArrayInOffheap finalize $arraySize")
+        log.warn(s"BytesArrayInOffheap finalize $arraySize")
         freeArray(longArray)
         longArray = null
       }
diff --git a/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeColumnarBuildSideRelation.scala b/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeColumnarBuildSideRelation.scala
index 5d73ffec024aa..014642becff99 100644
--- a/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeColumnarBuildSideRelation.scala
+++ b/backends-velox/src/main/scala/org/apache/spark/sql/execution/unsafe/UnsafeColumnarBuildSideRelation.scala
@@ -81,6 +81,7 @@ case class UnsafeColumnarBuildSideRelation(
     )
     val batchesSize = bytesBufferArray.length
     for (i <- 0 until batchesSize) {
+      log.warn(s"this $i--- ${bytesBufferArray(i).length}")
       batches.putBytesBuffer(i, bytesBufferArray(i))
     }
   }
@@ -94,6 +95,7 @@ case class UnsafeColumnarBuildSideRelation(
     out.writeLong(batches.totalBytes)
     for (i <- 0 until batches.arraySize) {
       val bytes = batches.getBytesBuffer(i)
+      log.warn(s"writeExternal index $i with length ${bytes.length}")
       out.write(bytes)
     }
   }
@@ -107,6 +109,7 @@ case class UnsafeColumnarBuildSideRelation(
     out.writeLong(batches.totalBytes)
     for (i <- 0 until batches.arraySize) {
       val bytes = batches.getBytesBuffer(i)
+      log.warn(s"write index $i with length ${bytes.length}")
       out.write(bytes)
     }
   }
@@ -141,6 +144,7 @@ case class UnsafeColumnarBuildSideRelation(
       val length = bytesBufferLengths(i)
       val tmpBuffer = new Array[Byte](length)
       in.read(tmpBuffer)
+      log.warn(s"readExternal $i--- $length")
       batches.putBytesBuffer(i, tmpBuffer)
     }
   }
@@ -167,6 +171,7 @@ case class UnsafeColumnarBuildSideRelation(
       val length = bytesBufferLengths(i)
       val tmpBuffer = new Array[Byte](length)
       in.read(tmpBuffer)
+      log.warn(s"read $i--- $length")
       batches.putBytesBuffer(i, tmpBuffer)
     }
   }