diff --git a/src/snowflake/snowpark/_internal/data_source/utils.py b/src/snowflake/snowpark/_internal/data_source/utils.py
index f3fbebbd71..626529abfa 100644
--- a/src/snowflake/snowpark/_internal/data_source/utils.py
+++ b/src/snowflake/snowpark/_internal/data_source/utils.py
@@ -196,6 +196,8 @@ def _task_fetch_data_from_source_with_retry(
     parquet_queue: Union[mp.Queue, queue.Queue],
     stop_event: threading.Event = None,
 ):
+    start = time.perf_counter()
+    logger.debug(f"Partition {partition_idx} fetch start")
     _retry_run(
         _task_fetch_data_from_source,
         worker,
@@ -204,6 +206,10 @@ def _task_fetch_data_from_source_with_retry(
         parquet_queue,
         stop_event,
     )
+    end = time.perf_counter()
+    logger.debug(
+        f"Partition {partition_idx} fetch finished, used {end - start} seconds"
+    )
 
 
 def _upload_and_copy_into_table(
@@ -253,6 +259,8 @@ def _upload_and_copy_into_table_with_retry(
     on_error: Optional[str] = "abort_statement",
     statements_params: Optional[Dict[str, str]] = None,
 ):
+    start = time.perf_counter()
+    logger.debug(f"Parquet file {parquet_id} upload and copy into table start")
     try:
         _retry_run(
             _upload_and_copy_into_table,
@@ -269,6 +277,10 @@ def _upload_and_copy_into_table_with_retry(
         # proactively close the buffer to release memory
         parquet_buffer.close()
         backpressure_semaphore.release()
+    end = time.perf_counter()
+    logger.debug(
+        f"Parquet file {parquet_id} upload and copy into table finished, used {end - start} seconds"
+    )
 
 
 def _retry_run(func: Callable, *args, **kwargs) -> Any:
diff --git a/tests/integ/test_data_source_api.py b/tests/integ/test_data_source_api.py
index 69403dabed..ad736ab2aa 100644
--- a/tests/integ/test_data_source_api.py
+++ b/tests/integ/test_data_source_api.py
@@ -387,7 +387,7 @@ def test_partition_unsupported_type(session):
 
 
 @pytest.mark.parametrize("fetch_with_process", [True, False])
-def test_telemetry(session, fetch_with_process):
+def test_telemetry(session, fetch_with_process, caplog):
     with patch(
         "snowflake.snowpark._internal.telemetry.TelemetryClient.send_data_source_perf_telemetry"
     ) as mock_telemetry:
@@ -406,6 +406,14 @@ def test_telemetry(session, fetch_with_process):
     assert "upload_and_copy_into_sf_table_duration" in telemetry_json
     assert "end_to_end_duration" in telemetry_json
 
+    assert "upload and copy into table start" in caplog.text
+    if not fetch_with_process:
+        assert "fetch start" in caplog.text
+
+    assert "upload and copy into table finished, used" in caplog.text
+    if not fetch_with_process:
+        assert "fetch finished, used" in caplog.text
+
 
 @pytest.mark.parametrize("fetch_with_process", [True, False])
 def test_telemetry_tracking(caplog, session, fetch_with_process):