slfan1989 commented on code in PR #13832:
URL: https://github.com/apache/iceberg/pull/13832#discussion_r2286711332


##########
flink/v2.0/flink/src/main/java/org/apache/iceberg/flink/maintenance/api/RewriteDataFilesConfig.java:
##########
@@ -31,39 +31,73 @@
 public class RewriteDataFilesConfig {
   public static final String PREFIX = FlinkMaintenanceConfig.PREFIX + 
"rewrite.";
 
+  // Configuration option for maximum rewrite bytes
   public static final String MAX_BYTES = PREFIX + "max-bytes";
   public static final ConfigOption<Long> MAX_BYTES_OPTION =
-      ConfigOptions.key(MAX_BYTES).longType().defaultValue(Long.MAX_VALUE);
+      ConfigOptions.key(MAX_BYTES)
+          .longType()
+          .defaultValue(Long.MAX_VALUE)
+          .withDescription(
+              "The maximum number of bytes allowed for the rewrite operation. "
+                  + "If the total size of the data files to be rewritten 
exceeds this value, "
+                  + "the rewrite operation will be split into multiple 
parts.");

Review Comment:
   Thank you for your suggestion! I have refined this part based on your 
feedback.



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