HBASE-28599 RowTooBigException is thrown when duplicate increment RPC call is attempted (#5927)

The root cause is analyzed by Robin Infant A(robiee17)

Signed-off-by: Duo Zhang <zhangduo@apache.org>
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
index c55090d..fdc50bc 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
@@ -4036,7 +4036,7 @@
       assert mutation instanceof Increment || mutation instanceof Append;
       Get get = new Get(mutation.getRow());
       CellScanner cellScanner = mutation.cellScanner();
-      while (!cellScanner.advance()) {
+      while (cellScanner.advance()) {
         Cell cell = cellScanner.current();
         get.addColumn(CellUtil.cloneFamily(cell), CellUtil.cloneQualifier(cell));
       }