diff --git a/tests/regress/expected/test_activetable_limit.out b/tests/regress/expected/test_activetable_limit.out
index 0b34e601..5b132120 100644
--- a/tests/regress/expected/test_activetable_limit.out
+++ b/tests/regress/expected/test_activetable_limit.out
@@ -14,6 +14,7 @@ INSERT INTO a02 values(generate_series(0, 500));
 INSERT INTO a03 values(generate_series(0, 500));
 \c test_tablenum_limit_02
 CREATE EXTENSION diskquota;
+-- we only read the current log file
 CREATE EXTERNAL WEB TABLE segment_logs(line text)
     EXECUTE 'cat $GP_SEG_DATADIR/pg_log/$(ls -Art $GP_SEG_DATADIR/pg_log | tail -n 1)'
     ON ALL FORMAT 'TEXT' (DELIMITER 'OFF');
diff --git a/tests/regress/expected/test_rejectmap_limit.out b/tests/regress/expected/test_rejectmap_limit.out
index f3818a5d..8e1c0eaa 100644
--- a/tests/regress/expected/test_rejectmap_limit.out
+++ b/tests/regress/expected/test_rejectmap_limit.out
@@ -13,6 +13,7 @@ SELECT diskquota.wait_for_worker_new_epoch();
  t
 (1 row)
 
+-- we only read the current log file
 CREATE EXTERNAL WEB TABLE master_log(line text)
     EXECUTE 'cat $GP_SEG_DATADIR/pg_log/$(ls -Art $GP_SEG_DATADIR/pg_log | tail -n 1)'
     ON MASTER FORMAT 'TEXT' (DELIMITER 'OFF');
diff --git a/tests/regress/sql/test_activetable_limit.sql b/tests/regress/sql/test_activetable_limit.sql
index bd94e8a0..601d7111 100644
--- a/tests/regress/sql/test_activetable_limit.sql
+++ b/tests/regress/sql/test_activetable_limit.sql
@@ -20,7 +20,7 @@ INSERT INTO a03 values(generate_series(0, 500));
 
 \c test_tablenum_limit_02
 CREATE EXTENSION diskquota;
-
+-- we only read the current log file
 CREATE EXTERNAL WEB TABLE segment_logs(line text)
     EXECUTE 'cat $GP_SEG_DATADIR/pg_log/$(ls -Art $GP_SEG_DATADIR/pg_log | tail -n 1)'
     ON ALL FORMAT 'TEXT' (DELIMITER 'OFF');
diff --git a/tests/regress/sql/test_rejectmap_limit.sql b/tests/regress/sql/test_rejectmap_limit.sql
index bed80aa4..8bed5cf9 100644
--- a/tests/regress/sql/test_rejectmap_limit.sql
+++ b/tests/regress/sql/test_rejectmap_limit.sql
@@ -12,6 +12,7 @@ CREATE DATABASE test_reject_map_limit_01;
 \c test_reject_map_limit_01
 CREATE EXTENSION diskquota;
 SELECT diskquota.wait_for_worker_new_epoch();
+-- we only read the current log file
 CREATE EXTERNAL WEB TABLE master_log(line text)
     EXECUTE 'cat $GP_SEG_DATADIR/pg_log/$(ls -Art $GP_SEG_DATADIR/pg_log | tail -n 1)'
     ON MASTER FORMAT 'TEXT' (DELIMITER 'OFF');
@@ -51,4 +52,4 @@ DROP EXTENSION diskquota;
 DROP DATABASE test_reject_map_limit_01;
 
 \! gpconfig -r diskquota.max_reject_entries > /dev/null
-\! gpstop -arf > /dev/null
\ No newline at end of file
+\! gpstop -arf > /dev/null