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7FileInputFormat (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapreduce.lib.input</FONT>
92<BR>
93Class FileInputFormat&lt;K,V&gt;</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.InputFormat</A>&lt;K,V&gt;
97      <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.lib.input.FileInputFormat&lt;K,V&gt;</B>
98</PRE>
99<DL>
100<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">SequenceFileInputFormat</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/TextInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">TextInputFormat</A></DD>
101</DL>
102<HR>
103<DL>
104<DT><PRE>public abstract class <B>FileInputFormat&lt;K,V&gt;</B><DT>extends <A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A>&lt;K,V&gt;</DL>
105</PRE>
106
107<P>
108A base class for file-based <A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A>s.
109 
110 <p><code>FileInputFormat</code> is the base class for all file-based
111 <code>InputFormat</code>s. This provides a generic implementation of
112 <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getSplits(org.apache.hadoop.mapreduce.JobContext)"><CODE>getSplits(JobContext)</CODE></A>.
113 Subclasses of <code>FileInputFormat</code> can also override the
114 <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)"><CODE>isSplitable(JobContext, Path)</CODE></A> method to ensure input-files are
115 not split-up and are processed as a whole by <A HREF="../../../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A>s.
116<P>
117
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129<B>Constructor Summary</B></FONT></TH>
130</TR>
131<TR BGCOLOR="white" CLASS="TableRowColor">
132<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#FileInputFormat()">FileInputFormat</A></B>()</CODE>
133
134<BR>
135&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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145<B>Method Summary</B></FONT></TH>
146</TR>
147<TR BGCOLOR="white" CLASS="TableRowColor">
148<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
149<CODE>static&nbsp;void</CODE></FONT></TD>
150<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPath(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path)">addInputPath</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
151             <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;path)</CODE>
152
153<BR>
154&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add a <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A> to the list of inputs for the map-reduce job.</TD>
155</TR>
156<TR BGCOLOR="white" CLASS="TableRowColor">
157<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
158<CODE>static&nbsp;void</CODE></FONT></TD>
159<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">addInputPaths</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
160              <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;commaSeparatedPaths)</CODE>
161
162<BR>
163&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Add the given comma separated paths to the list of inputs for
164  the map-reduce job.</TD>
165</TR>
166<TR BGCOLOR="white" CLASS="TableRowColor">
167<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
168<CODE>protected &nbsp;long</CODE></FONT></TD>
169<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#computeSplitSize(long, long, long)">computeSplitSize</A></B>(long&nbsp;blockSize,
170                 long&nbsp;minSize,
171                 long&nbsp;maxSize)</CODE>
172
173<BR>
174&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
175</TR>
176<TR BGCOLOR="white" CLASS="TableRowColor">
177<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
178<CODE>protected &nbsp;int</CODE></FONT></TD>
179<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getBlockIndex(org.apache.hadoop.fs.BlockLocation[], long)">getBlockIndex</A></B>(<A HREF="../../../../../../org/apache/hadoop/fs/BlockLocation.html" title="class in org.apache.hadoop.fs">BlockLocation</A>[]&nbsp;blkLocations,
180              long&nbsp;offset)</CODE>
181
182<BR>
183&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
184</TR>
185<TR BGCOLOR="white" CLASS="TableRowColor">
186<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
187<CODE>protected &nbsp;long</CODE></FONT></TD>
188<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getFormatMinSplitSize()">getFormatMinSplitSize</A></B>()</CODE>
189
190<BR>
191&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the lower bound on split size imposed by the format.</TD>
192</TR>
193<TR BGCOLOR="white" CLASS="TableRowColor">
194<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
195<CODE>static&nbsp;<A HREF="../../../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</A></CODE></FONT></TD>
196<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPathFilter(org.apache.hadoop.mapreduce.JobContext)">getInputPathFilter</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</CODE>
197
198<BR>
199&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get a PathFilter instance of the filter set for the input paths.</TD>
200</TR>
201<TR BGCOLOR="white" CLASS="TableRowColor">
202<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
203<CODE>static&nbsp;<A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]</CODE></FONT></TD>
204<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPaths(org.apache.hadoop.mapreduce.JobContext)">getInputPaths</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</CODE>
205
206<BR>
207&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the list of input <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s for the map-reduce job.</TD>
208</TR>
209<TR BGCOLOR="white" CLASS="TableRowColor">
210<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
211<CODE>static&nbsp;long</CODE></FONT></TD>
212<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMaxSplitSize(org.apache.hadoop.mapreduce.JobContext)">getMaxSplitSize</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</CODE>
213
214<BR>
215&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the maximum split size.</TD>
216</TR>
217<TR BGCOLOR="white" CLASS="TableRowColor">
218<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
219<CODE>static&nbsp;long</CODE></FONT></TD>
220<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMinSplitSize(org.apache.hadoop.mapreduce.JobContext)">getMinSplitSize</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)</CODE>
221
222<BR>
223&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the minimum split size</TD>
224</TR>
225<TR BGCOLOR="white" CLASS="TableRowColor">
226<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
227<CODE>&nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</A>&gt;</CODE></FONT></TD>
228<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getSplits(org.apache.hadoop.mapreduce.JobContext)">getSplits</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)</CODE>
229
230<BR>
231&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Generate the list of files and make them into FileSplits.</TD>
232</TR>
233<TR BGCOLOR="white" CLASS="TableRowColor">
234<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
235<CODE>protected &nbsp;boolean</CODE></FONT></TD>
236<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)">isSplitable</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context,
237            <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;filename)</CODE>
238
239<BR>
240&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Is the given filename splitable? Usually, true, but if the file is
241 stream compressed, it will not be.</TD>
242</TR>
243<TR BGCOLOR="white" CLASS="TableRowColor">
244<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
245<CODE>protected &nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="../../../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</A>&gt;</CODE></FONT></TD>
246<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#listStatus(org.apache.hadoop.mapreduce.JobContext)">listStatus</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)</CODE>
247
248<BR>
249&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;List input directories.</TD>
250</TR>
251<TR BGCOLOR="white" CLASS="TableRowColor">
252<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
253<CODE>static&nbsp;void</CODE></FONT></TD>
254<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPathFilter(org.apache.hadoop.mapreduce.Job, java.lang.Class)">setInputPathFilter</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
255                   <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&lt;? extends <A HREF="../../../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</A>&gt;&nbsp;filter)</CODE>
256
257<BR>
258&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set a PathFilter to be applied to the input paths for the map-reduce job.</TD>
259</TR>
260<TR BGCOLOR="white" CLASS="TableRowColor">
261<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
262<CODE>static&nbsp;void</CODE></FONT></TD>
263<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path...)">setInputPaths</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
264              <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>...&nbsp;inputPaths)</CODE>
265
266<BR>
267&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the array of <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s as the list of inputs
268 for the map-reduce job.</TD>
269</TR>
270<TR BGCOLOR="white" CLASS="TableRowColor">
271<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
272<CODE>static&nbsp;void</CODE></FONT></TD>
273<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">setInputPaths</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
274              <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;commaSeparatedPaths)</CODE>
275
276<BR>
277&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the given comma separated paths as the list of inputs
278 for the map-reduce job.</TD>
279</TR>
280<TR BGCOLOR="white" CLASS="TableRowColor">
281<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
282<CODE>static&nbsp;void</CODE></FONT></TD>
283<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMaxInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMaxInputSplitSize</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
284                     long&nbsp;size)</CODE>
285
286<BR>
287&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the maximum split size</TD>
288</TR>
289<TR BGCOLOR="white" CLASS="TableRowColor">
290<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
291<CODE>static&nbsp;void</CODE></FONT></TD>
292<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMinInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMinInputSplitSize</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
293                     long&nbsp;size)</CODE>
294
295<BR>
296&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the minimum input split size</TD>
297</TR>
298</TABLE>
299&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.InputFormat"><!-- --></A>
300<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
301<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
302<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A></B></TH>
303</TR>
304<TR BGCOLOR="white" CLASS="TableRowColor">
305<TD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">createRecordReader</A></CODE></TD>
306</TR>
307</TABLE>
308&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
309<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
310<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
311<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
312</TR>
313<TR BGCOLOR="white" CLASS="TableRowColor">
314<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
315</TR>
316</TABLE>
317&nbsp;
318<P>
319
320<!-- ========= CONSTRUCTOR DETAIL ======== -->
321
322<A NAME="constructor_detail"><!-- --></A>
323<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
324<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
325<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
326<B>Constructor Detail</B></FONT></TH>
327</TR>
328</TABLE>
329
330<A NAME="FileInputFormat()"><!-- --></A><H3>
331FileInputFormat</H3>
332<PRE>
333public <B>FileInputFormat</B>()</PRE>
334<DL>
335</DL>
336
337<!-- ============ METHOD DETAIL ========== -->
338
339<A NAME="method_detail"><!-- --></A>
340<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
341<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
342<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
343<B>Method Detail</B></FONT></TH>
344</TR>
345</TABLE>
346
347<A NAME="getFormatMinSplitSize()"><!-- --></A><H3>
348getFormatMinSplitSize</H3>
349<PRE>
350protected long <B>getFormatMinSplitSize</B>()</PRE>
351<DL>
352<DD>Get the lower bound on split size imposed by the format.
353<P>
354<DD><DL>
355
356<DT><B>Returns:</B><DD>the number of bytes of the minimal split for this format</DL>
357</DD>
358</DL>
359<HR>
360
361<A NAME="isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
362isSplitable</H3>
363<PRE>
364protected boolean <B>isSplitable</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context,
365                              <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;filename)</PRE>
366<DL>
367<DD>Is the given filename splitable? Usually, true, but if the file is
368 stream compressed, it will not be.
369 
370 <code>FileInputFormat</code> implementations can override this and return
371 <code>false</code> to ensure that individual input files are never split-up
372 so that <A HREF="../../../../../../org/apache/hadoop/mapreduce/Mapper.html" title="class in org.apache.hadoop.mapreduce"><CODE>Mapper</CODE></A>s process entire files.
373<P>
374<DD><DL>
375<DT><B>Parameters:</B><DD><CODE>context</CODE> - the job context<DD><CODE>filename</CODE> - the file name to check
376<DT><B>Returns:</B><DD>is this file splitable?</DL>
377</DD>
378</DL>
379<HR>
380
381<A NAME="setInputPathFilter(org.apache.hadoop.mapreduce.Job, java.lang.Class)"><!-- --></A><H3>
382setInputPathFilter</H3>
383<PRE>
384public static void <B>setInputPathFilter</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
385                                      <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</A>&lt;? extends <A HREF="../../../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</A>&gt;&nbsp;filter)</PRE>
386<DL>
387<DD>Set a PathFilter to be applied to the input paths for the map-reduce job.
388<P>
389<DD><DL>
390<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job to modify<DD><CODE>filter</CODE> - the PathFilter class use for filtering the input paths.</DL>
391</DD>
392</DL>
393<HR>
394
395<A NAME="setMinInputSplitSize(org.apache.hadoop.mapreduce.Job, long)"><!-- --></A><H3>
396setMinInputSplitSize</H3>
397<PRE>
398public static void <B>setMinInputSplitSize</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
399                                        long&nbsp;size)</PRE>
400<DL>
401<DD>Set the minimum input split size
402<P>
403<DD><DL>
404<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job to modify<DD><CODE>size</CODE> - the minimum size</DL>
405</DD>
406</DL>
407<HR>
408
409<A NAME="getMinSplitSize(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
410getMinSplitSize</H3>
411<PRE>
412public static long <B>getMinSplitSize</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)</PRE>
413<DL>
414<DD>Get the minimum split size
415<P>
416<DD><DL>
417<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job
418<DT><B>Returns:</B><DD>the minimum number of bytes that can be in a split</DL>
419</DD>
420</DL>
421<HR>
422
423<A NAME="setMaxInputSplitSize(org.apache.hadoop.mapreduce.Job, long)"><!-- --></A><H3>
424setMaxInputSplitSize</H3>
425<PRE>
426public static void <B>setMaxInputSplitSize</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
427                                        long&nbsp;size)</PRE>
428<DL>
429<DD>Set the maximum split size
430<P>
431<DD><DL>
432<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job to modify<DD><CODE>size</CODE> - the maximum split size</DL>
433</DD>
434</DL>
435<HR>
436
437<A NAME="getMaxSplitSize(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
438getMaxSplitSize</H3>
439<PRE>
440public static long <B>getMaxSplitSize</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</PRE>
441<DL>
442<DD>Get the maximum split size.
443<P>
444<DD><DL>
445<DT><B>Parameters:</B><DD><CODE>context</CODE> - the job to look at.
446<DT><B>Returns:</B><DD>the maximum number of bytes a split can include</DL>
447</DD>
448</DL>
449<HR>
450
451<A NAME="getInputPathFilter(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
452getInputPathFilter</H3>
453<PRE>
454public static <A HREF="../../../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</A> <B>getInputPathFilter</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</PRE>
455<DL>
456<DD>Get a PathFilter instance of the filter set for the input paths.
457<P>
458<DD><DL>
459
460<DT><B>Returns:</B><DD>the PathFilter instance set for the job, NULL if none has been set.</DL>
461</DD>
462</DL>
463<HR>
464
465<A NAME="listStatus(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
466listStatus</H3>
467<PRE>
468protected <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="../../../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</A>&gt; <B>listStatus</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)
469                               throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
470<DL>
471<DD>List input directories.
472 Subclasses may override to, e.g., select only files matching a regular
473 expression.
474<P>
475<DD><DL>
476<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job to list input paths for
477<DT><B>Returns:</B><DD>array of FileStatus objects
478<DT><B>Throws:</B>
479<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if zero items.</DL>
480</DD>
481</DL>
482<HR>
483
484<A NAME="getSplits(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
485getSplits</H3>
486<PRE>
487public <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</A>&gt; <B>getSplits</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)
488                           throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
489<DL>
490<DD>Generate the list of files and make them into FileSplits.
491<P>
492<DD><DL>
493<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html#getSplits(org.apache.hadoop.mapreduce.JobContext)">getSplits</A></CODE> in class <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="type parameter in FileInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="type parameter in FileInputFormat">V</A>&gt;</CODE></DL>
494</DD>
495<DD><DL>
496<DT><B>Parameters:</B><DD><CODE>job</CODE> - job configuration.
497<DT><B>Returns:</B><DD>an array of <A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputSplit</CODE></A>s for the job.
498<DT><B>Throws:</B>
499<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
500</DD>
501</DL>
502<HR>
503
504<A NAME="computeSplitSize(long, long, long)"><!-- --></A><H3>
505computeSplitSize</H3>
506<PRE>
507protected long <B>computeSplitSize</B>(long&nbsp;blockSize,
508                                long&nbsp;minSize,
509                                long&nbsp;maxSize)</PRE>
510<DL>
511<DD><DL>
512</DL>
513</DD>
514</DL>
515<HR>
516
517<A NAME="getBlockIndex(org.apache.hadoop.fs.BlockLocation[], long)"><!-- --></A><H3>
518getBlockIndex</H3>
519<PRE>
520protected int <B>getBlockIndex</B>(<A HREF="../../../../../../org/apache/hadoop/fs/BlockLocation.html" title="class in org.apache.hadoop.fs">BlockLocation</A>[]&nbsp;blkLocations,
521                            long&nbsp;offset)</PRE>
522<DL>
523<DD><DL>
524</DL>
525</DD>
526</DL>
527<HR>
528
529<A NAME="setInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)"><!-- --></A><H3>
530setInputPaths</H3>
531<PRE>
532public static void <B>setInputPaths</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
533                                 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;commaSeparatedPaths)
534                          throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
535<DL>
536<DD>Sets the given comma separated paths as the list of inputs
537 for the map-reduce job.
538<P>
539<DD><DL>
540<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job<DD><CODE>commaSeparatedPaths</CODE> - Comma separated paths to be set as
541        the list of inputs for the map-reduce job.
542<DT><B>Throws:</B>
543<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
544</DD>
545</DL>
546<HR>
547
548<A NAME="addInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)"><!-- --></A><H3>
549addInputPaths</H3>
550<PRE>
551public static void <B>addInputPaths</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
552                                 <A HREF="http://java.sun.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;commaSeparatedPaths)
553                          throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
554<DL>
555<DD>Add the given comma separated paths to the list of inputs for
556  the map-reduce job.
557<P>
558<DD><DL>
559<DT><B>Parameters:</B><DD><CODE>job</CODE> - The job to modify<DD><CODE>commaSeparatedPaths</CODE> - Comma separated paths to be added to
560        the list of inputs for the map-reduce job.
561<DT><B>Throws:</B>
562<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
563</DD>
564</DL>
565<HR>
566
567<A NAME="setInputPaths(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path...)"><!-- --></A><H3>
568setInputPaths</H3>
569<PRE>
570public static void <B>setInputPaths</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
571                                 <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>...&nbsp;inputPaths)
572                          throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
573<DL>
574<DD>Set the array of <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s as the list of inputs
575 for the map-reduce job.
576<P>
577<DD><DL>
578<DT><B>Parameters:</B><DD><CODE>job</CODE> - The job to modify<DD><CODE>inputPaths</CODE> - the <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s of the input directories/files
579 for the map-reduce job.
580<DT><B>Throws:</B>
581<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
582</DD>
583</DL>
584<HR>
585
586<A NAME="addInputPath(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
587addInputPath</H3>
588<PRE>
589public static void <B>addInputPath</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce">Job</A>&nbsp;job,
590                                <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;path)
591                         throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
592<DL>
593<DD>Add a <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A> to the list of inputs for the map-reduce job.
594<P>
595<DD><DL>
596<DT><B>Parameters:</B><DD><CODE>job</CODE> - The <A HREF="../../../../../../org/apache/hadoop/mapreduce/Job.html" title="class in org.apache.hadoop.mapreduce"><CODE>Job</CODE></A> to modify<DD><CODE>path</CODE> - <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A> to be added to the list of inputs for
597            the map-reduce job.
598<DT><B>Throws:</B>
599<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
600</DD>
601</DL>
602<HR>
603
604<A NAME="getInputPaths(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
605getInputPaths</H3>
606<PRE>
607public static <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[] <B>getInputPaths</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;context)</PRE>
608<DL>
609<DD>Get the list of input <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s for the map-reduce job.
610<P>
611<DD><DL>
612<DT><B>Parameters:</B><DD><CODE>context</CODE> - The job
613<DT><B>Returns:</B><DD>the list of input <A HREF="../../../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs"><CODE>Path</CODE></A>s for the map-reduce job.</DL>
614</DD>
615</DL>
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