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From phunt <...@git.apache.org>
Subject [GitHub] zookeeper pull request #377: [ZOOKEEPER-2901] TTL Nodes don't work with Serv...
Date Wed, 07 Feb 2018 23:14:42 GMT
Github user phunt commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/377#discussion_r166787684
  
    --- Diff: src/docs/src/documentation/content/xdocs/zookeeperAdmin.xml ---
    @@ -950,6 +952,39 @@ server.3=zoo3:2888:3888</programlisting>
                 </listitem>
               </varlistentry>
     
    +          <varlistentry>
    +            <term>zookeeper.extendedTypesEnabled</term>
    +
    +            <listitem>
    +                <para>(Java system property only: <emphasis
    +                    role="bold">zookeeper.extendedTypesEnabled</emphasis>)</para>
    +
    +              <para><emphasis role="bold">New in 3.5.4, 3.6.0:</emphasis>
Define to "true" to enable
    +              extended features such as the creation of <ulink url="zookeeperProgrammers.html#TTL+Nodes">TTL
Nodes</ulink>.
    +              They are disabled by default. IMPORTANT: when enabled server IDs must
    +              be less than 255 due to internal limitations.
    +              </para>
    +            </listitem>
    +          </varlistentry>
    +
    +          <varlistentry>
    +            <term>zookeeper.emulate353TTLNodes</term>
    +
    +            <listitem>
    +                <para>(Java system property only: <emphasis
    +                    role="bold">zookeeper.emulate353TTLNodes</emphasis>)</para>
    +
    +              <para><emphasis role="bold">New in 3.5.4, 3.6.0:</emphasis>
Due to
    +                <ulink url="https://issues.apache.org/jira/browse/ZOOKEEPER-2901">ZOOKEEPER-2901</ulink>
TTL nodes
    +                created in version 3.5.3 are not supported in 3.5.4/3.6.0. However, a
workaround is provided via the
    +                zookeeper.emulate353TTLNodes system property. If you used TTL nodes in
ZooKeeper 3.5.3 and need to maintain
    +                compatibility set <emphasis role="bold">zookeeper.emulate353TTLNodes</emphasis>
to "true" in addition to
    +                <emphasis role="bold">zookeeper.extendedTypesEnabled</emphasis>.
NOTE: due to the bug, server IDs
    +                must be 127 or less. Additionally, the maximum support TTL value is 1099511627775
which is smaller
    +                than what was allowed in 3.5.3 (1152921504606846975)</para>
    --- End diff --
    
    Is there documentation around this? I'd recommend documenting the bounds.


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