Author: mmorel
Date: Sat Apr 6 09:50:19 2013
New Revision: 1465215
URL: http://svn.apache.org/r1465215
Log:
highlight checkpointing requirements
Modified:
incubator/s4/site/doc/0.6.0/fault_tolerance/index.html
incubator/s4/site/doc/0.6.0/overview/index.html
Modified: incubator/s4/site/doc/0.6.0/fault_tolerance/index.html
URL: http://svn.apache.org/viewvc/incubator/s4/site/doc/0.6.0/fault_tolerance/index.html?rev=1465215&r1=1465214&r2=1465215&view=diff
==============================================================================
--- incubator/s4/site/doc/0.6.0/fault_tolerance/index.html (original)
+++ incubator/s4/site/doc/0.6.0/fault_tolerance/index.html Sat Apr 6 09:50:19 2013
@@ -148,9 +148,15 @@ When a message for a new key arrives in
<p>A PE can be checkpointed if:</p>
<ul>
-<li>the PE class provides an empty no-arg constructor (that restriction should be lifted
in next releases)</li>
- <li>it has non transient serializable fields (and by opposition, transient fields
will never be checkpointed)</li>
+<li>
+<strong>the PE class provides an empty no-arg constructor</strong> (that restriction
should be lifted in next releases)</li>
+ <li>
+<strong>it has non transient serializable fields</strong> (and by opposition,
transient fields will never be checkpointed)</li>
</ul>
+<blockquote>
+ <p>For example, one must make sure fields of type <code>Stream</code>
(for sending messages downstream) are transient!</p>
+</blockquote>
+
<h5 id="checkpointing-application-configuration">Checkpointing application configuration</h5>
<p>Checkpointing intervals are defined per prototype, in time intervals or event counts
(for now). This is specified in the application module, using API methods from the ProcessingElement
class, and passing a CheckpointingConfiguration object. Please refer to the API documentation.</p>
Modified: incubator/s4/site/doc/0.6.0/overview/index.html
URL: http://svn.apache.org/viewvc/incubator/s4/site/doc/0.6.0/overview/index.html?rev=1465215&r1=1465214&r2=1465215&view=diff
==============================================================================
--- incubator/s4/site/doc/0.6.0/overview/index.html (original)
+++ incubator/s4/site/doc/0.6.0/overview/index.html Sat Apr 6 09:50:19 2013
@@ -163,6 +163,10 @@
<p>The following diagram sums-up the key concepts in a hierarchical fashion:</p>
<p><img src="../../../images/doc/0.6.0/S4_hierarchical_archi.png" alt="image"></p>
+
+<h2 id="note">Note</h2>
+
+<p>S4 0.6 works exclusively with TCP</p>
</div>
</div>
<div id="footer">
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