hudi-agent commented on code in PR #19805:
URL: https://github.com/apache/hudi/pull/19805#discussion_r3915740220


##########
hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/sink/bootstrap/TimeBoundedRLIBootstrapOperator.java:
##########
@@ -0,0 +1,236 @@
+/*
+ * 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.hudi.sink.bootstrap;
+
+import org.apache.hudi.client.common.HoodieFlinkEngineContext;
+import org.apache.hudi.client.model.HoodieFlinkInternalRow;
+import org.apache.hudi.common.data.HoodiePairData;
+import org.apache.hudi.common.function.SerializableFunctionUnchecked;
+import org.apache.hudi.common.model.FileSlice;
+import org.apache.hudi.common.model.HoodieRecordGlobalLocation;
+import org.apache.hudi.common.table.HoodieTableConfig;
+import org.apache.hudi.common.table.HoodieTableMetaClient;
+import org.apache.hudi.common.util.Functions;
+import org.apache.hudi.common.util.VisibleForTesting;
+import org.apache.hudi.common.util.hash.BucketIndexUtil;
+import org.apache.hudi.configuration.FlinkOptions;
+import org.apache.hudi.metadata.HoodieBackedTableMetadata;
+import org.apache.hudi.metadata.MetadataPartitionType;
+import org.apache.hudi.util.StreamerUtil;
+import org.apache.hudi.utils.RuntimeContextUtils;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.runtime.state.StateInitializationContext;
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
+
+import java.time.LocalDate;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Bootstrap operator that preload of time bounded partitioned record level 
index (RLI) data
+ * from the metadata table.
+ *
+ * <p>Only data table partitions that fall within the last {@link 
FlinkOptions#INDEX_RLI_CACHE_ROCKSDB_BOOTSTRAP_DAYS}
+ * days are eagerly preloaded; the partition path of each partition is parsed 
as a date using
+ * {@link FlinkOptions#PARTITION_FORMAT} (default {@link 
FlinkOptions#PARTITION_FORMAT_DAY}) to
+ * determine whether it falls inside the window. Partitions outside the 
window, and partitions whose
+ * path cannot be parsed as a date, are skipped here and are expected to be 
loaded on demand later.
+ *
+ * <p>Setting {@link FlinkOptions#INDEX_RLI_CACHE_ROCKSDB_BOOTSTRAP_DAYS} to 
{@code 0} disables preloading
+ * entirely, which is the expected fallback for non-temporal (non 
date-partitioned) tables.
+ */
+@Slf4j
+public class TimeBoundedRLIBootstrapOperator
+    extends AbstractBootstrapOperator {
+
+  private transient HoodieBackedTableMetadata tableMetadata;
+  private transient long loadedCnt;
+  private int parallelism;
+  private int taskID;

Review Comment:
   🤖 nit: could you spell this out as `loadedCount`? `loadedCnt` is a small 
abbreviation but it reads slightly awkwardly next to the surrounding 
unabbreviated field names.
   
   <sub><i>⚠️ AI-generated; verify before applying. React 👍/👎 to flag 
quality.</i></sub>



##########
hudi-flink-datasource/hudi-flink/src/test/java/org/apache/hudi/configuration/TestOptionsResolver.java:
##########
@@ -407,6 +407,23 @@ void testConflictResolutionStrategies() {
         OptionsResolver.getConflictResolutionStrategy(conf));
   }
 
+  @Test

Review Comment:
   🤖 nit: `testPartitionedRLIWithRocksDBBackend` only exercises cases where the 
method returns `false` — it might be worth adding one `assertTrue` with 
`INDEX_TYPE=RECORD_LEVEL_INDEX`, `INDEX_RLI_BACKEND_TYPE=rocksdb`, and 
`INDEX_RLI_CACHE_ROCKSDB_BOOTSTRAP_DAYS > 0` to confirm the happy path.
   
   <sub><i>⚠️ AI-generated; verify before applying. React 👍/👎 to flag 
quality.</i></sub>



##########
hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/sink/bootstrap/TimeBoundedRLIBootstrapOperator.java:
##########
@@ -0,0 +1,236 @@
+/*
+ * 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.hudi.sink.bootstrap;
+
+import org.apache.hudi.client.common.HoodieFlinkEngineContext;
+import org.apache.hudi.client.model.HoodieFlinkInternalRow;
+import org.apache.hudi.common.data.HoodiePairData;
+import org.apache.hudi.common.function.SerializableFunctionUnchecked;
+import org.apache.hudi.common.model.FileSlice;
+import org.apache.hudi.common.model.HoodieRecordGlobalLocation;
+import org.apache.hudi.common.table.HoodieTableConfig;
+import org.apache.hudi.common.table.HoodieTableMetaClient;
+import org.apache.hudi.common.util.Functions;
+import org.apache.hudi.common.util.VisibleForTesting;
+import org.apache.hudi.common.util.hash.BucketIndexUtil;
+import org.apache.hudi.configuration.FlinkOptions;
+import org.apache.hudi.metadata.HoodieBackedTableMetadata;
+import org.apache.hudi.metadata.MetadataPartitionType;
+import org.apache.hudi.util.StreamerUtil;
+import org.apache.hudi.utils.RuntimeContextUtils;
+
+import lombok.extern.slf4j.Slf4j;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.runtime.state.StateInitializationContext;
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;
+
+import java.time.LocalDate;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+/**
+ * Bootstrap operator that preload of time bounded partitioned record level 
index (RLI) data
+ * from the metadata table.
+ *
+ * <p>Only data table partitions that fall within the last {@link 
FlinkOptions#INDEX_RLI_CACHE_ROCKSDB_BOOTSTRAP_DAYS}
+ * days are eagerly preloaded; the partition path of each partition is parsed 
as a date using
+ * {@link FlinkOptions#PARTITION_FORMAT} (default {@link 
FlinkOptions#PARTITION_FORMAT_DAY}) to
+ * determine whether it falls inside the window. Partitions outside the 
window, and partitions whose
+ * path cannot be parsed as a date, are skipped here and are expected to be 
loaded on demand later.
+ *
+ * <p>Setting {@link FlinkOptions#INDEX_RLI_CACHE_ROCKSDB_BOOTSTRAP_DAYS} to 
{@code 0} disables preloading
+ * entirely, which is the expected fallback for non-temporal (non 
date-partitioned) tables.
+ */
+@Slf4j
+public class TimeBoundedRLIBootstrapOperator
+    extends AbstractBootstrapOperator {
+
+  private transient HoodieBackedTableMetadata tableMetadata;
+  private transient long loadedCnt;
+  private int parallelism;
+  private int taskID;
+  /**
+   * Functions for calculating the task partition to dispatch.
+   */
+  @VisibleForTesting
+  Functions.Function3<Integer, String, Integer, Integer> partitionIndexFunc;
+
+  public TimeBoundedRLIBootstrapOperator(Configuration conf) {
+    super(conf);
+  }
+
+  @Override
+  public void initializeState(StateInitializationContext context) throws 
Exception {
+    loadedCnt = 0;
+    this.taskID = 
RuntimeContextUtils.getIndexOfThisSubtask(getRuntimeContext());
+
+    int bootstrapDays = 
conf.get(FlinkOptions.INDEX_RLI_CACHE_ROCKSDB_BOOTSTRAP_DAYS);
+    if (bootstrapDays <= 0) {
+      log.info("Skip preloading partitioned RLI records because bootstrap days 
is configured as {}, taskId = {}",
+          bootstrapDays, taskID);
+      waitForBootstrapReady(taskID);
+      return;
+    }
+
+    HoodieTableMetaClient metaClient = StreamerUtil.createMetaClient(conf);
+    this.tableMetadata = createTableMetadata(metaClient);
+
+    this.parallelism = 
RuntimeContextUtils.getNumberOfParallelSubtasks(getRuntimeContext());
+    this.partitionIndexFunc = 
BucketIndexUtil.getPartitionIndexFunc(parallelism);
+    preLoadPartitionedRLIRecords(metaClient.getTableConfig(), bootstrapDays);
+  }
+
+  @Override
+  public void close() throws Exception {
+    closeMetadataTable();
+    super.close();
+  }
+
+  // -------------------------------------------------------------------------
+  //  Utilities
+  // -------------------------------------------------------------------------
+
+  @VisibleForTesting
+  HoodieBackedTableMetadata createTableMetadata(HoodieTableMetaClient 
metaClient) {
+    return new HoodieBackedTableMetadata(
+        HoodieFlinkEngineContext.DEFAULT,
+        metaClient.getStorage(),
+        StreamerUtil.metadataConfig(conf),
+        conf.get(FlinkOptions.PATH));
+  }
+
+  private void preLoadPartitionedRLIRecords(HoodieTableConfig tableConfig, int 
bootstrapDays) {
+    if (!tableMetadata.enabled()) {
+      if (tableConfig.isMetadataTableAvailable()) {
+        throw new RuntimeException("Can not initialize the table metadata");
+      }
+      log.info("Skip preloading partitioned RLI records because table metadata 
is not initialized, taskId = {}", taskID);
+      waitForBootstrapReady(taskID);
+      closeMetadataTable();
+      return;
+    }
+
+    if 
(!tableConfig.isMetadataPartitionAvailable(MetadataPartitionType.RECORD_INDEX)) 
{
+      log.info("Skip preloading partitioned RLI records because record index 
is not available yet, taskId = {}", taskID);
+      waitForBootstrapReady(taskID);
+      closeMetadataTable();
+      return;
+    }
+
+    Map<String, List<FileSlice>> partitionedFileGroups =
+        
tableMetadata.getBucketizedFileGroupsForPartitionedRLI(MetadataPartitionType.RECORD_INDEX);
+    List<String> partitionsInWindow = 
filterPartitionsInWindow(partitionedFileGroups.keySet(), bootstrapDays);
+
+    log.info("Start preloading partitioned RLI records from metadata table for 
{}/{} partitions within the last {} days, "
+            + "taskId = {}, parallelism = {}",
+        partitionsInWindow.size(), partitionedFileGroups.size(), 
bootstrapDays, taskID, parallelism);
+
+    long startTime = System.currentTimeMillis();
+    for (String partitionPath : partitionsInWindow) {
+      preLoadPartition(partitionPath, 
partitionedFileGroups.get(partitionPath), taskID, parallelism);
+    }
+    long costMs = System.currentTimeMillis() - startTime;
+    log.info("Finish preloading partitioned RLI records, total records: {}, 
cost: {} ms, taskId = {}", loadedCnt, costMs, taskID);
+
+    // Wait for other tasks to complete
+    waitForBootstrapReady(taskID);
+
+    // Cleanup resources
+    closeMetadataTable();
+  }
+
+  private void preLoadPartition(String partitionPath, List<FileSlice> 
fileSlices, int taskID, int parallelism) {
+    List<FileSlice> filteredFileSlices = new ArrayList<>();
+    for (int i = 0; i < fileSlices.size(); i++) {

Review Comment:
   🤖 nit: `parallelism` is passed in here but never used inside the method body 
— might be worth dropping it from the signature and letting `shouldLoadBucket` 
and the log statement read off the captured `taskID` only.
   
   <sub><i>⚠️ AI-generated; verify before applying. React 👍/👎 to flag 
quality.</i></sub>



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