Github user hanm commented on a diff in the pull request: https://github.com/apache/zookeeper/pull/179#discussion_r101579781 --- Diff: src/docs/src/documentation/content/xdocs/zookeeperAdmin.xml --- @@ -1155,6 +1155,30 @@ server.3=zoo3:2888:3888</programlisting> </listitem> </varlistentry> + <varlistentry> + <term>4lw.commands.whitelist</term> + + <listitem> + <para>(Java system property: <emphasis --- End diff -- Yes, it is a nice trick - if a configuration option 'foobar' in zoo.cfg does not require explicitly handling, then it will implicitly being added as 'zookeeper.foobar' system property during parsing zoo.cfg, see [here](https://github.com/apache/zookeeper/blob/master/src/java/main/org/apache/zookeeper/server/quorum/QuorumPeerConfig.java#L296).
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