hive standalone can't find MaterializationsCacheCleanerTask

[second_comet.yahoo.com via user]

May i know is MaterializationsCacheCleanerTask removed since 3.1 ? I can find 
it iin 3.0 but for latest version of hive, i cant find it. Can advice?
 <property>
          <name>metastore.task.threads.always</name>
          
<value>org.apache.hadoop.hive.metastore.events.EventCleanerTask,org.apache.hadoop.hive.metastore.MaterializationsCacheCleanerTask</value>
</property>
Thank you