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Pipeline (crunch 0.2.0 API)
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com.cloudera.crunch</FONT>
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Interface Pipeline</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../com/cloudera/crunch/impl/mem/MemPipeline.html" title="class in com.cloudera.crunch.impl.mem">MemPipeline</A>, <A HREF="../../../com/cloudera/crunch/impl/mr/MRPipeline.html" title="class in com.cloudera.crunch.impl.mr">MRPipeline</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public interface <B>Pipeline</B></DL>
</PRE>
<P>
Manages the state of a pipeline execution.
<P>
<P>
<HR>
<P>
<!-- ========== METHOD SUMMARY =========== -->
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<B>Method Summary</B></FONT></TH>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#done()">done</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Run any remaining jobs required to generate outputs and then
clean up any intermediate data files that were created in
this run or previous calls to <code>run</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#enableDebug()">enableDebug</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Turn on debug logging for jobs that are run from this pipeline.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;org.apache.hadoop.conf.Configuration</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#getConfiguration()">getConfiguration</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the <code>Configuration</code> instance associated with this pipeline.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;T&gt; <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</A>&lt;T&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#materialize(com.cloudera.crunch.PCollection)">materialize</A></B>(<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;T&gt;&nbsp;pcollection)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create the given PCollection and read the data it contains
into the returned Collection instance for client use.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;T&gt; <A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;T&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#read(com.cloudera.crunch.Source)">read</A></B>(<A HREF="../../../com/cloudera/crunch/Source.html" title="interface in com.cloudera.crunch">Source</A>&lt;T&gt;&nbsp;source)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts the given <code>Source</code> into a <code>PCollection</code> that is
available to jobs run using this <code>Pipeline</code> instance.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;K,V&gt; <A HREF="../../../com/cloudera/crunch/PTable.html" title="interface in com.cloudera.crunch">PTable</A>&lt;K,V&gt;</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#read(com.cloudera.crunch.TableSource)">read</A></B>(<A HREF="../../../com/cloudera/crunch/TableSource.html" title="interface in com.cloudera.crunch">TableSource</A>&lt;K,V&gt;&nbsp;tableSource)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A version of the read method for <code>TableSource</code> instances that
map to <code>PTable</code>s.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#readTextFile(java.lang.String)">readTextFile</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;pathName)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A convenience method for reading a text file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#run()">run</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructs and executes a series of MapReduce jobs in order
to write data to the output targets.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#setConfiguration(org.apache.hadoop.conf.Configuration)">setConfiguration</A></B>(org.apache.hadoop.conf.Configuration&nbsp;conf)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the <code>Configuration</code> to use with this pipeline.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#write(com.cloudera.crunch.PCollection, com.cloudera.crunch.Target)">write</A></B>(<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;?&gt;&nbsp;collection,
<A HREF="../../../com/cloudera/crunch/Target.html" title="interface in com.cloudera.crunch">Target</A>&nbsp;target)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Write the given collection to the given target on the next
pipeline run.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="0" SUMMARY="">
<TR ALIGN="right" VALIGN="">
<TD NOWRAP><FONT SIZE="-1">
<CODE>&lt;T&gt; void</CODE></FONT></TD>
</TR>
</TABLE>
</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/cloudera/crunch/Pipeline.html#writeTextFile(com.cloudera.crunch.PCollection, java.lang.String)">writeTextFile</A></B>(<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;T&gt;&nbsp;collection,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;pathName)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A convenience method for writing a text file.</TD>
</TR>
</TABLE>
&nbsp;
<P>
<!-- ============ METHOD DETAIL ========== -->
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<B>Method Detail</B></FONT></TH>
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<A NAME="setConfiguration(org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
setConfiguration</H3>
<PRE>
void <B>setConfiguration</B>(org.apache.hadoop.conf.Configuration&nbsp;conf)</PRE>
<DL>
<DD>Set the <code>Configuration</code> to use with this pipeline.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="getConfiguration()"><!-- --></A><H3>
getConfiguration</H3>
<PRE>
org.apache.hadoop.conf.Configuration <B>getConfiguration</B>()</PRE>
<DL>
<DD>Returns the <code>Configuration</code> instance associated with this pipeline.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="read(com.cloudera.crunch.Source)"><!-- --></A><H3>
read</H3>
<PRE>
&lt;T&gt; <A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;T&gt; <B>read</B>(<A HREF="../../../com/cloudera/crunch/Source.html" title="interface in com.cloudera.crunch">Source</A>&lt;T&gt;&nbsp;source)</PRE>
<DL>
<DD>Converts the given <code>Source</code> into a <code>PCollection</code> that is
available to jobs run using this <code>Pipeline</code> instance.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>source</CODE> - The source of data
<DT><B>Returns:</B><DD>A PCollection that references the given source</DL>
</DD>
</DL>
<HR>
<A NAME="read(com.cloudera.crunch.TableSource)"><!-- --></A><H3>
read</H3>
<PRE>
&lt;K,V&gt; <A HREF="../../../com/cloudera/crunch/PTable.html" title="interface in com.cloudera.crunch">PTable</A>&lt;K,V&gt; <B>read</B>(<A HREF="../../../com/cloudera/crunch/TableSource.html" title="interface in com.cloudera.crunch">TableSource</A>&lt;K,V&gt;&nbsp;tableSource)</PRE>
<DL>
<DD>A version of the read method for <code>TableSource</code> instances that
map to <code>PTable</code>s.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>tableSource</CODE> - The source of the data
<DT><B>Returns:</B><DD>A PTable that references the given source</DL>
</DD>
</DL>
<HR>
<A NAME="write(com.cloudera.crunch.PCollection, com.cloudera.crunch.Target)"><!-- --></A><H3>
write</H3>
<PRE>
void <B>write</B>(<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;?&gt;&nbsp;collection,
<A HREF="../../../com/cloudera/crunch/Target.html" title="interface in com.cloudera.crunch">Target</A>&nbsp;target)</PRE>
<DL>
<DD>Write the given collection to the given target on the next
pipeline run.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>collection</CODE> - The collection<DD><CODE>target</CODE> - The output target</DL>
</DD>
</DL>
<HR>
<A NAME="materialize(com.cloudera.crunch.PCollection)"><!-- --></A><H3>
materialize</H3>
<PRE>
&lt;T&gt; <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</A>&lt;T&gt; <B>materialize</B>(<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;T&gt;&nbsp;pcollection)</PRE>
<DL>
<DD>Create the given PCollection and read the data it contains
into the returned Collection instance for client use.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>pcollection</CODE> - The PCollection to materialize
<DT><B>Returns:</B><DD>the data from the PCollection as a read-only Collection</DL>
</DD>
</DL>
<HR>
<A NAME="run()"><!-- --></A><H3>
run</H3>
<PRE>
void <B>run</B>()</PRE>
<DL>
<DD>Constructs and executes a series of MapReduce jobs in order
to write data to the output targets.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="done()"><!-- --></A><H3>
done</H3>
<PRE>
void <B>done</B>()</PRE>
<DL>
<DD>Run any remaining jobs required to generate outputs and then
clean up any intermediate data files that were created in
this run or previous calls to <code>run</code>.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="readTextFile(java.lang.String)"><!-- --></A><H3>
readTextFile</H3>
<PRE>
<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt; <B>readTextFile</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;pathName)</PRE>
<DL>
<DD>A convenience method for reading a text file.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="writeTextFile(com.cloudera.crunch.PCollection, java.lang.String)"><!-- --></A><H3>
writeTextFile</H3>
<PRE>
&lt;T&gt; void <B>writeTextFile</B>(<A HREF="../../../com/cloudera/crunch/PCollection.html" title="interface in com.cloudera.crunch">PCollection</A>&lt;T&gt;&nbsp;collection,
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;pathName)</PRE>
<DL>
<DD>A convenience method for writing a text file.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="enableDebug()"><!-- --></A><H3>
enableDebug</H3>
<PRE>
void <B>enableDebug</B>()</PRE>
<DL>
<DD>Turn on debug logging for jobs that are run from this pipeline.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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