By default, dfs.namenode.acls.enabled is now set to true. If you haven't set dfs.namenode.acls.enabled=false before and want to keep ACLs feature disabled, you must explicitly set it to false in hdfs-site.xml. i.e.
<property>
<name>dfs.namenode.acls.enabled</name>
<value>false</value>
</property>
By default, dfs.namenode.acls.enabled is now set to true. If you haven't set dfs.namenode.acls.enabled=false before and want to keep ACLs feature disabled, you must explicitly set it to false in hdfs-site.xml. i.e.
<property>
<name>dfs.namenode.acls.enabled</name>
<value>false</value>
</property>