ZanderXu commented on code in PR #6833:
URL: https://github.com/apache/hadoop/pull/6833#discussion_r1607709901


##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/driver/StateStoreRecordOperations.java:
##########
@@ -127,6 +128,17 @@ <T extends BaseRecord> StateStoreOperationResult putAll(
   @AtMostOnce
   <T extends BaseRecord> boolean remove(T record) throws IOException;
 
+  /**
+   * Remove multiple records.
+   *
+   * @param <T> Record class of the records.
+   * @param records Records to be removed.
+   * @return Map of record -> boolean indicating if the record has being 
removed successfully.

Review Comment:
   ```
   [ERROR] Failed to execute goal 
org.apache.maven.plugins:maven-javadoc-plugin:3.0.1:javadoc-no-fork 
(default-cli) on project hadoop-hdfs-rbf: An error has occurred in Javadoc 
report generation: 
   [ERROR] Exit code: 1 - javadoc: warning - You have specified the HTML 
version as HTML 4.01 by using the -html4 option.
   [ERROR] The default is currently HTML5 and the support for HTML 4.01 will be 
removed
   [ERROR] in a future release. To suppress this warning, please ensure that 
any HTML constructs
   [ERROR] in your comments are valid in HTML5, and remove the -html4 option.
   [ERROR] 
/home/jenkins/jenkins-agent/workspace/hadoop-multibranch_PR-6833/ubuntu-focal/src/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/driver/StateStoreRecordOperations.java:136:
 error: bad use of '>'
   [ERROR]    * @return Map of record -> boolean indicating any entries being 
deleted by this record.
   [ERROR]                             ^
   [ERROR] javadoc: warning - invalid usage of tag >
   ```
   
   @kokonguyen191 It seems that `->` is not allowed in the javadoc.



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