pvary commented on code in PR #11497:
URL: https://github.com/apache/iceberg/pull/11497#discussion_r2063931073


##########
flink/v1.20/flink/src/main/java/org/apache/iceberg/flink/maintenance/operator/DataFileRewritePlanner.java:
##########
@@ -0,0 +1,209 @@
+/*
+ * 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.flink.maintenance.operator;
+
+import java.math.RoundingMode;
+import java.util.List;
+import java.util.ListIterator;
+import java.util.Map;
+import org.apache.flink.annotation.Internal;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.metrics.Counter;
+import org.apache.flink.streaming.api.functions.ProcessFunction;
+import org.apache.flink.util.Collector;
+import org.apache.iceberg.DataFile;
+import org.apache.iceberg.FileScanTask;
+import org.apache.iceberg.SerializableTable;
+import org.apache.iceberg.actions.BinPackRewriteFilePlanner;
+import org.apache.iceberg.actions.FileRewritePlan;
+import org.apache.iceberg.actions.RewriteDataFiles;
+import org.apache.iceberg.actions.RewriteFileGroup;
+import org.apache.iceberg.flink.TableLoader;
+import org.apache.iceberg.flink.maintenance.api.Trigger;
+import org.apache.iceberg.relocated.com.google.common.base.Preconditions;
+import org.apache.iceberg.relocated.com.google.common.collect.Lists;
+import org.apache.iceberg.relocated.com.google.common.math.IntMath;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Plans the rewrite groups using the {@link BinPackRewriteFilePlanner}. The 
input is the {@link
+ * Trigger}, the output is zero, or some {@link PlannedGroup}s.
+ */
+@Internal
+public class DataFileRewritePlanner
+    extends ProcessFunction<Trigger, DataFileRewritePlanner.PlannedGroup> {
+  static final String MESSAGE_PREFIX = "[For table {} with {}[{}] at {}]: ";
+  static final String MESSAGE_FORMAT_PREFIX = "[For table %s with {%s}[{%d}] 
at {%d}]: ";
+  private static final Logger LOG = 
LoggerFactory.getLogger(DataFileRewritePlanner.class);
+
+  private final String tableName;
+  private final String taskName;
+  private final int taskIndex;
+  private final TableLoader tableLoader;
+  private final int partialProgressMaxCommits;
+  private final long maxRewriteBytes;
+  private final Map<String, String> rewriterOptions;
+  private transient Counter errorCounter;
+
+  public DataFileRewritePlanner(
+      String tableName,
+      String taskName,
+      int taskIndex,
+      TableLoader tableLoader,
+      int newPartialProgressMaxCommits,
+      long maxRewriteBytes,
+      Map<String, String> rewriterOptions) {
+    Preconditions.checkNotNull(tableName, "Table name should no be null");
+    Preconditions.checkNotNull(taskName, "Task name should no be null");
+    Preconditions.checkNotNull(tableLoader, "Table loader should no be null");
+    Preconditions.checkNotNull(rewriterOptions, "Options map should no be 
null");
+
+    this.tableName = tableName;
+    this.taskName = taskName;
+    this.taskIndex = taskIndex;
+    this.tableLoader = tableLoader;
+    this.partialProgressMaxCommits = newPartialProgressMaxCommits;
+    this.maxRewriteBytes = maxRewriteBytes;
+    this.rewriterOptions = rewriterOptions;
+  }
+
+  @Override
+  public void open(Configuration parameters) throws Exception {
+    tableLoader.open();
+    this.errorCounter =
+        TableMaintenanceMetrics.groupFor(getRuntimeContext(), tableName, 
taskName, taskIndex)
+            .counter(TableMaintenanceMetrics.ERROR_COUNTER);
+  }
+
+  @Override
+  public void processElement(Trigger value, Context ctx, 
Collector<PlannedGroup> out)
+      throws Exception {
+    LOG.debug(

Review Comment:
   Done



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