[GitHub] [iceberg] nastra commented on a diff in pull request #7447: Display Spark read metrics on Spark SQL UI

["nastra (via GitHub)" <gi...@apache.org>]

nastra commented on code in PR #7447:
URL: https://github.com/apache/iceberg/pull/7447#discussion_r1187476500


##########
spark/v3.4/spark/src/main/java/org/apache/iceberg/spark/source/metrics/TotalPlanningDuration.java:
##########
@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.iceberg.spark.source.metrics;
+
+import java.util.Arrays;
+import org.apache.spark.sql.connector.metric.CustomMetric;
+
+public class TotalPlanningDuration implements CustomMetric {
+
+  static final String name = "planningDuration";

Review Comment:
   should this be `totalPlanningDuration` instead? Same in the description



##########
spark/v3.4/spark/src/main/java/org/apache/iceberg/spark/source/metrics/SparkReadMetricReporter.java:
##########
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.iceberg.spark.source.metrics;
+
+import java.util.Optional;
+import org.apache.iceberg.metrics.MetricsReport;
+import org.apache.iceberg.metrics.MetricsReporter;
+import org.apache.iceberg.metrics.ScanReport;
+
+public class SparkReadMetricReporter implements MetricsReporter {
+
+  private MetricsReport metricsReport;
+
+  @Override
+  public void report(MetricsReport report) {
+    this.metricsReport = report;
+  }
+
+  public Optional<ScanReport> getScanReport() {
+    return Optional.ofNullable((ScanReport) metricsReport);

Review Comment:
   ```suggestion
       return metricsReport instanceof ScanReport
           ? Optional.of((ScanReport) metricsReport)
           : Optional.empty();
   ```



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