diff --git a/src/main/asciidoc/_chapters/backup_restore.adoc b/src/main/asciidoc/_chapters/backup_restore.adoc
index fbf93777f24..592faebfc16 100644
--- a/src/main/asciidoc/_chapters/backup_restore.adoc
+++ b/src/main/asciidoc/_chapters/backup_restore.adoc
@@ -50,6 +50,23 @@ restore feature is ideal for creating "cold" copies of data (where a manual step
 Previously, users only had the ability to create full backups via the ExportSnapshot functionality. The incremental
 backup implementation is the novel improvement over the previous "art" provided by ExportSnapshot.
 
+The backup and restore feature uses DistCp to transfer files between clusters .
+link:https://issues.apache.org/jira/browse/HADOOP-15850[HADOOP-15850] fixes a bug where CopyCommitter#concatFileChunks
+unconditionally tried to concatenate the files being DistCp'ed to target cluster (though the files are
+independent) . Without the fix from
+link:https://issues.apache.org/jira/browse/HADOOP-15850[HADOOP-15850] , the transfer would fail.
+So the backup and restore feature need hadoop version as below
+
+* 2.7.x
+* 2.8.x
+* 2.9.2+
+* 2.10.0+
+* 3.0.4+
+* 3.1.2+
+* 3.2.0+
+* 3.3.0+
+
+
 [[br.terminology]]
 == Terminology