vinothchandar commented on a change in pull request #2833:
URL: https://github.com/apache/hudi/pull/2833#discussion_r645869201



##########
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/client/transaction/lock/LockManager.java
##########
@@ -61,8 +61,8 @@ public void lock() {
       LockProvider lockProvider = getLockProvider();
       int retryCount = 0;
       boolean acquired = false;
-      int retries = 
lockConfiguration.getConfig().getInteger(LOCK_ACQUIRE_CLIENT_NUM_RETRIES_PROP);
-      long waitTimeInMs = 
lockConfiguration.getConfig().getInteger(LOCK_ACQUIRE_CLIENT_RETRY_WAIT_TIME_IN_MILLIS_PROP);
+      int retries = 
lockConfiguration.getConfig().getInteger(LOCK_ACQUIRE_CLIENT_NUM_RETRIES_PROP_KEY);

Review comment:
       `LockConfiguration` could also be a HoodieConfig right? 

##########
File path: 
hudi-cli/src/test/java/org/apache/hudi/cli/commands/TestUpgradeDowngradeCommand.java
##########
@@ -109,9 +109,10 @@ private void assertTableVersionFromPropertyFile() throws 
IOException {
     Path propertyFile = new Path(metaClient.getMetaPath() + "/" + 
HoodieTableConfig.HOODIE_PROPERTIES_FILE);
     // Load the properties and verify
     FSDataInputStream fsDataInputStream = 
metaClient.getFs().open(propertyFile);
-    Properties prop = new Properties();
-    prop.load(fsDataInputStream);
+    HoodieConfig hoodieConfig = new HoodieConfig();
+    hoodieConfig.load(fsDataInputStream);

Review comment:
       Ideally. we can just have a factory method 
`HoodieConfig.create(fsDataInputStream)` ? without needing the default 
constructor?

##########
File path: 
hudi-common/src/main/java/org/apache/hudi/common/config/ConfigOption.java
##########
@@ -0,0 +1,139 @@
+/*
+ * 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.common.config;
+
+import org.apache.hudi.common.util.Option;
+import org.apache.hudi.exception.HoodieException;
+
+import java.io.Serializable;
+import java.util.function.Function;
+import java.util.Map;
+import java.util.Objects;
+
+/**
+ * ConfigOption describes a configuration parameter. It contains the 
configuration
+ * key, deprecated older versions of the key, and an optional default value 
for the configuration,
+ * configuration descriptions and also the an infer mechanism to infer the 
configuration value
+ * based on other configurations.
+ *
+ * @param <T> The type of the default value.
+ */
+public class ConfigOption<T> implements Serializable {
+
+  private final String key;
+
+  private final T defaultValue;
+
+  private final String description;
+
+  private final Option<String> version;
+
+  private final String[] alternatives;

Review comment:
       I guess, its sufficient, if we don't end up changing anything the type 
of the config option. Lets go with this for now.

##########
File path: 
hudi-cli/src/test/java/org/apache/hudi/cli/commands/TestRepairsCommand.java
##########
@@ -156,10 +156,10 @@ public void testOverwriteHoodieProperties() throws 
IOException {
     CommandResult cr = getShell().executeCommand("repair 
overwrite-hoodie-props --new-props-file " + newProps.getPath());
     assertTrue(cr.isSuccess());
 
-    Map<String, String> oldProps = 
HoodieCLI.getTableMetaClient().getTableConfig().getProps();
+    Map<String, String> oldProps = 
HoodieCLI.getTableMetaClient().getTableConfig().getMapProps();

Review comment:
       rename: propsMap() ?




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