diff --git a/python/ray/data/_internal/planner/plan_read_op.py b/python/ray/data/_internal/planner/plan_read_op.py
index e9d800045139..962035b18f1f 100644
--- a/python/ray/data/_internal/planner/plan_read_op.py
+++ b/python/ray/data/_internal/planner/plan_read_op.py
@@ -20,7 +20,8 @@
 from ray.data.context import DataContext
 from ray.data.datasource.datasource import ReadTask
 
-TASK_SIZE_WARN_THRESHOLD_BYTES = 100000
+# As one readTask can contain multiple paths, we increase to 1MB to prevent excessive log messages.
+TASK_SIZE_WARN_THRESHOLD_BYTES = 1000000
 
 # Transient errors that can occur during longer reads. Trigger retry when these occur.
 READ_FILE_RETRY_ON_ERRORS = ["AWS Error NETWORK_CONNECTION", "AWS Error ACCESS_DENIED"]