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Subject svn commit: r935831 - in /websites/staging/crunch/trunk/content: ./ user-guide.html
Date Sun, 11 Jan 2015 17:27:58 GMT
Author: buildbot
Date: Sun Jan 11 17:27:58 2015
New Revision: 935831

Staging update by buildbot for crunch

    websites/staging/crunch/trunk/content/   (props changed)

Propchange: websites/staging/crunch/trunk/content/
--- cms:source-revision (original)
+++ cms:source-revision Sun Jan 11 17:27:58 2015
@@ -1 +1 @@

Modified: websites/staging/crunch/trunk/content/user-guide.html
--- websites/staging/crunch/trunk/content/user-guide.html (original)
+++ websites/staging/crunch/trunk/content/user-guide.html Sun Jan 11 17:27:58 2015
@@ -1579,15 +1579,23 @@ computations that combine custom DoFns w
 implementation to create test data sets that we can easily verify by hand, and then this
same logic can be executed on
 a distributed data set using either the <a href="#mrpipeline">MRPipeline</a>
or <a href="#sparkpipeline">SparkPipeline</a> implementations.</p>
 <h3 id="pipeline-execution-plan-visualizations">Pipeline execution plan visualizations</h3>
-<p>Crunch provides tools to visualize the pipeline execution plans. The <a href="apidocs/0.10.0/org/apache/crunch/PipelineExecution.html">PipelineExecution</a>
 <code>String getPlanDotFile()</code> method returns an execution plan visualization
in DOT format. When the output folder property is set, Crunch produces a DOT file after each
pipeline run. </p>
-<p>Additional aspects of the execution plans are provided when the DOT file debug mode
is enabled. Then Crunch provides 4 additional DOT diagrams visualizing different internal
stages of the execution plan. Such plans include PCollection lineage, Base graph plan, Split
graph plans, Run-time nodes. 
-Note: To enable the debug mode you should set an out put folder first. The following snapped
switches the DOT file debug mode.  As a result 5 DOT diagrams are generated in the output
folder after each Pipeline execution:</p>
-<div class="codehilite"><pre>    <span class="n">Configuration</span>
<span class="n">conf</span> <span class="p">=</span> <span class="p">...</span>
-    <span class="n">String</span> <span class="n">dotfileDir</span>
<span class="p">=</span> <span class="p">...</span>
+<p>Crunch provides tools to visualize the pipeline execution plan. The <a href="apidocs/0.10.0/org/apache/crunch/PipelineExecution.html">PipelineExecution</a>
 <code>String getPlanDotFile()</code> method returns a DOT format visualization
of the exaction plan. Furthermore if the output folder is set then Crunch will save the dotfile
diagram on each pipeline execution: </p>
+<div class="codehilite"><pre>    <span class="n">Configuration</span>
<span class="n">conf</span> <span class="p">=...;</span>     
+    <span class="n">String</span> <span class="n">dotfileDir</span>
<span class="p">=...;</span>
+    <span class="o">//</span> <span class="n">Set</span> <span
class="n">DOT</span> <span class="n">files</span> <span class="n">out</span>
<span class="n">put</span> <span class="n">folder</span> <span
     <span class="n">DotfileUtills</span><span class="p">.</span><span
class="n">setPipelineDotfileOutputDir</span><span class="p">(</span><span
class="n">conf</span><span class="p">,</span> <span class="n">dotfileDir</span><span
+<p>Additional details of the Crunch execution plan can be exposed by enabling the dotfile
debug mode like this:</p>
+<div class="codehilite"><pre>    <span class="o">//</span> <span
class="n">Requires</span> <span class="n">the</span> <span class="n">output</span>
<span class="n">folder</span> <span class="n">to</span> <span class="n">be</span>
<span class="n">set</span><span class="p">.</span>
     <span class="n">DotfileUtills</span><span class="p">.</span><span
class="n">enableDebugDotfiles</span><span class="p">(</span><span
class="n">conf</span><span class="p">);</span>
+<p>This will produce (and save) 4 additional diagrams that visualize the internal stages
of the pipeline execution plan. Such diagrams are the PCollection pineage, the pipeline base
and split graphs and the run-time node (RTNode) representation. </p>
+<p>(Note: The debug mode requires the output folder to be set. )</p>
         </div> <!-- /span -->
       </div> <!-- /row-fluid -->

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