diff --git a/hbase-common/src/main/resources/hbase-default.xml b/hbase-common/src/main/resources/hbase-default.xml
index 66f5e73..27e9f51 100644
--- a/hbase-common/src/main/resources/hbase-default.xml
+++ b/hbase-common/src/main/resources/hbase-default.xml
@@ -1602,6 +1602,8 @@ possible configurations would overwhelm and obscure the important.
The period that ExpiredMobFileCleanerChore runs. The unit is second.
The default value is one day.
+ The file name uses only the date part of the file creation time in it.
+ The removal of TTL expired MOB files might be delayed and the max delay is 24 hours.