Merge branch 'temp_cloudberry' of https://github.com/ZTE-EBASE/cloudberry into temp_cloudberry

Author: 王平10304955

src/backend/utils/misc/fstream/gfile.c

@@ -241,8 +241,17 @@ bz_file_read(gfile_t *fd, void *ptr, size_t len)
 
 		while (z->in_size < sizeof z->in)
 		{
-			s = read_and_retry(fd, z->in + z->in_size, sizeof z->in
-					- z->in_size);
+			if (fd->is_sftp)
+			{
+#ifdef LIBSSH2
+				gfile_printf_then_putc_newline("sftp_rean : Read bz files from an SFTP server");
+				s = sftp_read(fd, z->in + z->in_size, sizeof z->in - z->in_size);
+#endif
+			}
+
+			else
+				s = read_and_retry(fd, z->in + z->in_size, sizeof z->in
+						- z->in_size);
 			if (s == 0)
 				break;
 			if (s < 0)