DaveTeng0 commented on code in PR #6533:
URL: https://github.com/apache/ozone/pull/6533#discussion_r1626413859


##########
hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/repair/TransactionInfoRepair.java:
##########
@@ -0,0 +1,128 @@
+/*
+ * 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
+ *
+ * <p>http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * <p>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.hadoop.ozone.repair;
+
+import org.apache.hadoop.hdds.cli.HddsVersionProvider;
+import org.apache.hadoop.hdds.cli.SubcommandWithParent;
+import org.apache.hadoop.hdds.utils.IOUtils;
+import org.apache.hadoop.hdds.utils.TransactionInfo;
+import org.apache.hadoop.hdds.utils.db.StringCodec;
+import org.apache.hadoop.hdds.utils.db.managed.ManagedRocksDB;
+import org.apache.hadoop.ozone.debug.RocksDBUtils;
+import org.kohsuke.MetaInfServices;
+import org.rocksdb.ColumnFamilyDescriptor;
+import org.rocksdb.ColumnFamilyHandle;
+import org.rocksdb.RocksDBException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import picocli.CommandLine;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Callable;
+
+import static org.apache.hadoop.ozone.OzoneConsts.TRANSACTION_INFO_KEY;
+import static 
org.apache.hadoop.ozone.om.OmMetadataManagerImpl.TRANSACTION_INFO_TABLE;
+
+
+/**
+ * Tool to update the highest term-index in transactionInfoTable.
+ */
[email protected](
+    name = "transaction",
+    description = "CLI to update the highest index in transactionInfoTable.",
+    mixinStandardHelpOptions = true,
+    versionProvider = HddsVersionProvider.class
+)
+@MetaInfServices(SubcommandWithParent.class)
+public class TransactionInfoRepair
+    implements Callable<Void>, SubcommandWithParent  {
+
+  protected static final Logger LOG = 
LoggerFactory.getLogger(TransactionInfoRepair.class);
+
+  @CommandLine.Spec
+  private static CommandLine.Model.CommandSpec spec;
+
+  @CommandLine.ParentCommand
+  private RDBRepair parent;
+
+  @CommandLine.Option(names = {"--highest-transaction"},
+      required = true,
+      description = "Highest termIndex of transactionInfoTable. The input 
format is: {term}#{index}.")
+  private String highestTransactionTermIndex;
+
+
+  protected void setHighestTransactionTermIndex(
+      String highestTransactionTermIndex) {
+    this.highestTransactionTermIndex = highestTransactionTermIndex;
+  }
+
+  @Override
+  public Void call() throws Exception {
+    List<ColumnFamilyHandle> cfHandleList = new ArrayList<>();
+    String dbPath = getParent().getDbPath();
+    List<ColumnFamilyDescriptor> cfDescList = 
RocksDBUtils.getColumnFamilyDescriptors(
+        dbPath);
+
+    try (ManagedRocksDB db = ManagedRocksDB.open(dbPath, cfDescList, 
cfHandleList)) {
+      ColumnFamilyHandle transactionInfoCfh = 
RocksDBUtils.getColumnFamilyHandle(TRANSACTION_INFO_TABLE, cfHandleList);
+      if (transactionInfoCfh == null) {
+        System.err.println(TRANSACTION_INFO_TABLE + " is not in a column 
family in DB for the given path.");
+        return null;

Review Comment:
   definitely makes sense, my mistake and I should have chose to throw 
exception here instead! thanks for catching it, and will add verification of 
the error message and exit code in test cases.



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