From 0d4176d5c476e3ac77d9be6416c601aab9bf8dc7 Mon Sep 17 00:00:00 2001
From: huiruan <huiruan@tencent.com>
Date: Sat, 25 Apr 2026 19:27:45 +0800
Subject: [PATCH] HBASE-30116 Fix TableSnapshotInputFormat#getLen() returning
 zero for valid snapshot splits

---
 .../hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.java b/hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.java
index 501209f1c902..b4cf394ed8b4 100644
--- a/hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.java
+++ b/hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormatImpl.java
@@ -182,7 +182,10 @@ public String getRestoreDir() {
 
     public long getLength() {
       // TODO: We can obtain the file sizes of the snapshot here.
-      return 0;
+      // returns a valid positive length instead of 0 to avoid
+      // Spark's empty-partition filtering which was introduced via SPARK-22233
+      // and enabled by default in SPARK-34809
+      return 1L;
     }
 
     public String[] getLocations() {