diff --git a/docs/dev/table/connectors/filesystem.md b/docs/dev/table/connectors/filesystem.md
index b808e3cef1b68..2b179fc62f94f 100644
--- a/docs/dev/table/connectors/filesystem.md
+++ b/docs/dev/table/connectors/filesystem.md
@@ -186,6 +186,7 @@ If enabled, file compaction will merge multiple small files into larger files ba
 When running file compaction in production, please be aware that:
 - Only files in a single checkpoint are compacted, that is, at least the same number of files as the number of checkpoints is generated.
 - The file before merging is invisible, so the visibility of the file may be: checkpoint interval + compaction time.
+- If the compaction takes too long, it will backpressure the job and extend the time period of checkpoint.
 
 ### Partition Commit
 
diff --git a/docs/dev/table/connectors/filesystem.zh.md b/docs/dev/table/connectors/filesystem.zh.md
index f1704979a9c15..4a8f69aa8da03 100644
--- a/docs/dev/table/connectors/filesystem.zh.md
+++ b/docs/dev/table/connectors/filesystem.zh.md
@@ -186,6 +186,7 @@ If enabled, file compaction will merge multiple small files into larger files ba
 When running file compaction in production, please be aware that:
 - Only files in a single checkpoint are compacted, that is, at least the same number of files as the number of checkpoints is generated.
 - The file before merging is invisible, so the visibility of the file may be: checkpoint interval + compaction time.
+- If the compaction takes too long, it will backpressure the job and extend the time period of checkpoint.
 
 ### Partition Commit