nastra commented on code in PR #15104:
URL: https://github.com/apache/iceberg/pull/15104#discussion_r2799327596


##########
spark/v4.1/spark/src/main/java/org/apache/iceberg/spark/SparkWriteUtil.java:
##########
@@ -256,4 +286,101 @@ private static SortOrder[] orderBy(Expression... exprs) {
   private static SortOrder sort(Expression expr) {
     return Expressions.sort(expr, SortDirection.ASCENDING);
   }
+
+  public static CustomMetric[] supportedCustomMetrics() {
+    return new CustomMetric[] {
+      new AddedDataFiles(),
+      new AddedDeleteFiles(),
+      new AddedEqualityDeletes(),
+      new AddedEqualityDeleteFiles(),
+      new AddedFileSizeInBytes(),
+      new AddedPositionalDeletes(),
+      new AddedPositionalDeleteFiles(),
+      new AddedRecords(),
+      new RemovedDataFiles(),
+      new RemovedDeleteFiles(),
+      new RemovedRecords(),
+      new RemovedEqualityDeleteFiles(),
+      new RemovedEqualityDeletes(),
+      new RemovedFileSizeInBytes(),
+      new RemovedPositionalDeleteFiles(),
+      new RemovedPositionalDeletes(),
+      new TotalDataFiles(),
+      new TotalDeleteFiles(),
+      new TotalEqualityDeletes(),
+      new TotalFileSizeInBytes(),
+      new TotalPositionalDeletes(),
+      new TotalRecords()
+    };
+  }
+
+  public static CustomTaskMetric[] customTaskMetrics(InMemoryMetricsReporter 
metricsReporter) {
+    List<CustomTaskMetric> taskMetrics = Lists.newArrayList();
+    if (metricsReporter != null) {
+      CommitReport commitReport = metricsReporter.commitReport();
+      if (commitReport != null) {
+        CommitMetricsResult metricsResult = commitReport.commitMetrics();
+        addMetricValue(new AddedDataFiles(), metricsResult.addedDataFiles(), 
taskMetrics);
+        addMetricValue(new AddedDeleteFiles(), 
metricsResult.addedDeleteFiles(), taskMetrics);
+        addMetricValue(
+            new AddedEqualityDeletes(), metricsResult.addedEqualityDeletes(), 
taskMetrics);
+        addMetricValue(
+            new AddedEqualityDeleteFiles(), 
metricsResult.addedEqualityDeleteFiles(), taskMetrics);
+        addMetricValue(
+            new AddedFileSizeInBytes(), metricsResult.addedFilesSizeInBytes(), 
taskMetrics);
+        addMetricValue(
+            new AddedPositionalDeletes(), 
metricsResult.addedPositionalDeletes(), taskMetrics);
+        addMetricValue(
+            new AddedPositionalDeleteFiles(),
+            metricsResult.addedPositionalDeleteFiles(),
+            taskMetrics);
+        addMetricValue(new AddedRecords(), metricsResult.addedRecords(), 
taskMetrics);
+        addMetricValue(new RemovedDataFiles(), 
metricsResult.removedDataFiles(), taskMetrics);
+        addMetricValue(new RemovedDeleteFiles(), 
metricsResult.removedDeleteFiles(), taskMetrics);
+        addMetricValue(new RemovedRecords(), metricsResult.removedRecords(), 
taskMetrics);
+        addMetricValue(
+            new RemovedEqualityDeleteFiles(),
+            metricsResult.removedEqualityDeleteFiles(),
+            taskMetrics);
+        addMetricValue(
+            new RemovedEqualityDeletes(), 
metricsResult.removedEqualityDeletes(), taskMetrics);
+        addMetricValue(
+            new RemovedFileSizeInBytes(), 
metricsResult.removedFilesSizeInBytes(), taskMetrics);
+        addMetricValue(
+            new RemovedPositionalDeleteFiles(),
+            metricsResult.removedPositionalDeleteFiles(),
+            taskMetrics);
+        addMetricValue(
+            new RemovedPositionalDeletes(), 
metricsResult.removedPositionalDeletes(), taskMetrics);
+        addMetricValue(new TotalDataFiles(), metricsResult.totalDataFiles(), 
taskMetrics);
+        addMetricValue(new TotalDeleteFiles(), 
metricsResult.totalDeleteFiles(), taskMetrics);
+        addMetricValue(
+            new TotalEqualityDeletes(), metricsResult.totalEqualityDeletes(), 
taskMetrics);
+        addMetricValue(
+            new TotalFileSizeInBytes(), metricsResult.totalFilesSizeInBytes(), 
taskMetrics);
+        addMetricValue(
+            new TotalPositionalDeletes(), 
metricsResult.totalPositionalDeletes(), taskMetrics);
+        addMetricValue(new TotalRecords(), metricsResult.totalRecords(), 
taskMetrics);
+      }
+    }
+    return taskMetrics.toArray(new CustomTaskMetric[0]);
+  }
+
+  private static void addMetricValue(

Review Comment:
   ```suggestion
     private static void addValue(
   ```



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