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7SequenceFile.Sorter (Hadoop 0.20.1 API)
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91org.apache.hadoop.io</FONT>
92<BR>
93Class SequenceFile.Sorter</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 "><B>org.apache.hadoop.io.SequenceFile.Sorter</B>
97</PRE>
98<DL>
99<DT><B>Enclosing class:</B><DD><A HREF="../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io">SequenceFile</A></DD>
100</DL>
101<HR>
102<DL>
103<DT><PRE>public static class <B>SequenceFile.Sorter</B><DT>extends <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></DL>
104</PRE>
105
106<P>
107Sorts key/value pairs in a sequence-format file.
108
109 <p>For best performance, applications should make sure that the <A HREF="../../../../org/apache/hadoop/io/Writable.html#readFields(java.io.DataInput)"><CODE>Writable.readFields(DataInput)</CODE></A> implementation of their keys is
110 very efficient.  In particular, it should avoid allocating memory.
111<P>
112
113<P>
114<HR>
115
116<P>
117<!-- ======== NESTED CLASS SUMMARY ======== -->
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122<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
123<B>Nested Class Summary</B></FONT></TH>
124</TR>
125<TR BGCOLOR="white" CLASS="TableRowColor">
126<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
127<CODE>static&nbsp;interface</CODE></FONT></TD>
128<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></B></CODE>
129
130<BR>
131&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The interface to iterate over raw keys/values of SequenceFiles.</TD>
132</TR>
133<TR BGCOLOR="white" CLASS="TableRowColor">
134<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
135<CODE>&nbsp;class</CODE></FONT></TD>
136<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.SegmentDescriptor.html" title="class in org.apache.hadoop.io">SequenceFile.Sorter.SegmentDescriptor</A></B></CODE>
137
138<BR>
139&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This class defines a merge segment.</TD>
140</TR>
141</TABLE>
142&nbsp;
143<!-- ======== CONSTRUCTOR SUMMARY ======== -->
144
145<A NAME="constructor_summary"><!-- --></A>
146<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
147<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
148<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
149<B>Constructor Summary</B></FONT></TH>
150</TR>
151<TR BGCOLOR="white" CLASS="TableRowColor">
152<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#SequenceFile.Sorter(org.apache.hadoop.fs.FileSystem, java.lang.Class, java.lang.Class, org.apache.hadoop.conf.Configuration)">SequenceFile.Sorter</A></B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
153                    <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/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&gt;&nbsp;keyClass,
154                    <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>&nbsp;valClass,
155                    <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</CODE>
156
157<BR>
158&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sort and merge files containing the named classes.</TD>
159</TR>
160<TR BGCOLOR="white" CLASS="TableRowColor">
161<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#SequenceFile.Sorter(org.apache.hadoop.fs.FileSystem, org.apache.hadoop.io.RawComparator, java.lang.Class, java.lang.Class, org.apache.hadoop.conf.Configuration)">SequenceFile.Sorter</A></B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
162                    <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&nbsp;comparator,
163                    <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>&nbsp;keyClass,
164                    <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>&nbsp;valClass,
165                    <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</CODE>
166
167<BR>
168&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sort and merge using an arbitrary <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A>.</TD>
169</TR>
170</TABLE>
171&nbsp;
172<!-- ========== METHOD SUMMARY =========== -->
173
174<A NAME="method_summary"><!-- --></A>
175<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
176<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
177<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
178<B>Method Summary</B></FONT></TH>
179</TR>
180<TR BGCOLOR="white" CLASS="TableRowColor">
181<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
182<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Writer.html" title="class in org.apache.hadoop.io">SequenceFile.Writer</A></CODE></FONT></TD>
183<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#cloneFileAttributes(org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path, org.apache.hadoop.util.Progressable)">cloneFileAttributes</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;inputFile,
184                    <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outputFile,
185                    <A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A>&nbsp;prog)</CODE>
186
187<BR>
188&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Clones the attributes (like compression of the input file and creates a
189 corresponding Writer</TD>
190</TR>
191<TR BGCOLOR="white" CLASS="TableRowColor">
192<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
193<CODE>&nbsp;int</CODE></FONT></TD>
194<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#getFactor()">getFactor</A></B>()</CODE>
195
196<BR>
197&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the number of streams to merge at once.</TD>
198</TR>
199<TR BGCOLOR="white" CLASS="TableRowColor">
200<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
201<CODE>&nbsp;int</CODE></FONT></TD>
202<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#getMemory()">getMemory</A></B>()</CODE>
203
204<BR>
205&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the total amount of buffer memory, in bytes.</TD>
206</TR>
207<TR BGCOLOR="white" CLASS="TableRowColor">
208<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
209<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></CODE></FONT></TD>
210<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#merge(java.util.List, org.apache.hadoop.fs.Path)">merge</A></B>(<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/io/SequenceFile.Sorter.SegmentDescriptor.html" title="class in org.apache.hadoop.io">SequenceFile.Sorter.SegmentDescriptor</A>&gt;&nbsp;segments,
211      <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tmpDir)</CODE>
212
213<BR>
214&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Merges the list of segments of type <code>SegmentDescriptor</code></TD>
215</TR>
216<TR BGCOLOR="white" CLASS="TableRowColor">
217<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
218<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></CODE></FONT></TD>
219<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#merge(org.apache.hadoop.fs.Path[], boolean, int, org.apache.hadoop.fs.Path)">merge</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inNames,
220      boolean&nbsp;deleteInputs,
221      int&nbsp;factor,
222      <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tmpDir)</CODE>
223
224<BR>
225&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Merges the contents of files passed in Path[]</TD>
226</TR>
227<TR BGCOLOR="white" CLASS="TableRowColor">
228<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
229<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></CODE></FONT></TD>
230<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#merge(org.apache.hadoop.fs.Path[], boolean, org.apache.hadoop.fs.Path)">merge</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inNames,
231      boolean&nbsp;deleteInputs,
232      <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tmpDir)</CODE>
233
234<BR>
235&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Merges the contents of files passed in Path[] using a max factor value
236 that is already set</TD>
237</TR>
238<TR BGCOLOR="white" CLASS="TableRowColor">
239<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
240<CODE>&nbsp;void</CODE></FONT></TD>
241<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#merge(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path)">merge</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inFiles,
242      <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outFile)</CODE>
243
244<BR>
245&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Merge the provided files.</TD>
246</TR>
247<TR BGCOLOR="white" CLASS="TableRowColor">
248<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
249<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></CODE></FONT></TD>
250<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#merge(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path, boolean)">merge</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inNames,
251      <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tempDir,
252      boolean&nbsp;deleteInputs)</CODE>
253
254<BR>
255&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Merges the contents of files passed in Path[]</TD>
256</TR>
257<TR BGCOLOR="white" CLASS="TableRowColor">
258<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
259<CODE>&nbsp;void</CODE></FONT></TD>
260<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#setFactor(int)">setFactor</A></B>(int&nbsp;factor)</CODE>
261
262<BR>
263&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the number of streams to merge at once.</TD>
264</TR>
265<TR BGCOLOR="white" CLASS="TableRowColor">
266<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
267<CODE>&nbsp;void</CODE></FONT></TD>
268<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#setMemory(int)">setMemory</A></B>(int&nbsp;memory)</CODE>
269
270<BR>
271&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the total amount of buffer memory, in bytes.</TD>
272</TR>
273<TR BGCOLOR="white" CLASS="TableRowColor">
274<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
275<CODE>&nbsp;void</CODE></FONT></TD>
276<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#setProgressable(org.apache.hadoop.util.Progressable)">setProgressable</A></B>(<A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A>&nbsp;progressable)</CODE>
277
278<BR>
279&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the progressable object in order to report progress.</TD>
280</TR>
281<TR BGCOLOR="white" CLASS="TableRowColor">
282<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
283<CODE>&nbsp;void</CODE></FONT></TD>
284<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#sort(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path, boolean)">sort</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inFiles,
285     <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outFile,
286     boolean&nbsp;deleteInput)</CODE>
287
288<BR>
289&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Perform a file sort from a set of input files into an output file.</TD>
290</TR>
291<TR BGCOLOR="white" CLASS="TableRowColor">
292<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
293<CODE>&nbsp;void</CODE></FONT></TD>
294<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#sort(org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path)">sort</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;inFile,
295     <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outFile)</CODE>
296
297<BR>
298&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The backwards compatible interface to sort.</TD>
299</TR>
300<TR BGCOLOR="white" CLASS="TableRowColor">
301<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
302<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A></CODE></FONT></TD>
303<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#sortAndIterate(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path, boolean)">sortAndIterate</A></B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inFiles,
304               <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tempDir,
305               boolean&nbsp;deleteInput)</CODE>
306
307<BR>
308&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Perform a file sort from a set of input files and return an iterator.</TD>
309</TR>
310<TR BGCOLOR="white" CLASS="TableRowColor">
311<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
312<CODE>&nbsp;void</CODE></FONT></TD>
313<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.html#writeFile(org.apache.hadoop.io.SequenceFile.Sorter.RawKeyValueIterator, org.apache.hadoop.io.SequenceFile.Writer)">writeFile</A></B>(<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A>&nbsp;records,
314          <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Writer.html" title="class in org.apache.hadoop.io">SequenceFile.Writer</A>&nbsp;writer)</CODE>
315
316<BR>
317&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Writes records from RawKeyValueIterator into a file represented by the
318 passed writer</TD>
319</TR>
320</TABLE>
321&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
322<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
323<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
324<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>
325</TR>
326<TR BGCOLOR="white" CLASS="TableRowColor">
327<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>
328</TR>
329</TABLE>
330&nbsp;
331<P>
332
333<!-- ========= CONSTRUCTOR DETAIL ======== -->
334
335<A NAME="constructor_detail"><!-- --></A>
336<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
337<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
338<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
339<B>Constructor Detail</B></FONT></TH>
340</TR>
341</TABLE>
342
343<A NAME="SequenceFile.Sorter(org.apache.hadoop.fs.FileSystem, java.lang.Class, java.lang.Class, org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
344SequenceFile.Sorter</H3>
345<PRE>
346public <B>SequenceFile.Sorter</B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
347                           <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/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&gt;&nbsp;keyClass,
348                           <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>&nbsp;valClass,
349                           <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</PRE>
350<DL>
351<DD>Sort and merge files containing the named classes.
352<P>
353</DL>
354<HR>
355
356<A NAME="SequenceFile.Sorter(org.apache.hadoop.fs.FileSystem, org.apache.hadoop.io.RawComparator, java.lang.Class, java.lang.Class, org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
357SequenceFile.Sorter</H3>
358<PRE>
359public <B>SequenceFile.Sorter</B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
360                           <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io">RawComparator</A>&nbsp;comparator,
361                           <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>&nbsp;keyClass,
362                           <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>&nbsp;valClass,
363                           <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</PRE>
364<DL>
365<DD>Sort and merge using an arbitrary <A HREF="../../../../org/apache/hadoop/io/RawComparator.html" title="interface in org.apache.hadoop.io"><CODE>RawComparator</CODE></A>.
366<P>
367</DL>
368
369<!-- ============ METHOD DETAIL ========== -->
370
371<A NAME="method_detail"><!-- --></A>
372<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
373<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
374<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
375<B>Method Detail</B></FONT></TH>
376</TR>
377</TABLE>
378
379<A NAME="setFactor(int)"><!-- --></A><H3>
380setFactor</H3>
381<PRE>
382public void <B>setFactor</B>(int&nbsp;factor)</PRE>
383<DL>
384<DD>Set the number of streams to merge at once.
385<P>
386<DD><DL>
387</DL>
388</DD>
389</DL>
390<HR>
391
392<A NAME="getFactor()"><!-- --></A><H3>
393getFactor</H3>
394<PRE>
395public int <B>getFactor</B>()</PRE>
396<DL>
397<DD>Get the number of streams to merge at once.
398<P>
399<DD><DL>
400</DL>
401</DD>
402</DL>
403<HR>
404
405<A NAME="setMemory(int)"><!-- --></A><H3>
406setMemory</H3>
407<PRE>
408public void <B>setMemory</B>(int&nbsp;memory)</PRE>
409<DL>
410<DD>Set the total amount of buffer memory, in bytes.
411<P>
412<DD><DL>
413</DL>
414</DD>
415</DL>
416<HR>
417
418<A NAME="getMemory()"><!-- --></A><H3>
419getMemory</H3>
420<PRE>
421public int <B>getMemory</B>()</PRE>
422<DL>
423<DD>Get the total amount of buffer memory, in bytes.
424<P>
425<DD><DL>
426</DL>
427</DD>
428</DL>
429<HR>
430
431<A NAME="setProgressable(org.apache.hadoop.util.Progressable)"><!-- --></A><H3>
432setProgressable</H3>
433<PRE>
434public void <B>setProgressable</B>(<A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A>&nbsp;progressable)</PRE>
435<DL>
436<DD>Set the progressable object in order to report progress.
437<P>
438<DD><DL>
439</DL>
440</DD>
441</DL>
442<HR>
443
444<A NAME="sort(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path, boolean)"><!-- --></A><H3>
445sort</H3>
446<PRE>
447public void <B>sort</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inFiles,
448                 <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outFile,
449                 boolean&nbsp;deleteInput)
450          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>
451<DL>
452<DD>Perform a file sort from a set of input files into an output file.
453<P>
454<DD><DL>
455<DT><B>Parameters:</B><DD><CODE>inFiles</CODE> - the files to be sorted<DD><CODE>outFile</CODE> - the sorted output file<DD><CODE>deleteInput</CODE> - should the input files be deleted as they are read?
456<DT><B>Throws:</B>
457<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>
458</DD>
459</DL>
460<HR>
461
462<A NAME="sortAndIterate(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path, boolean)"><!-- --></A><H3>
463sortAndIterate</H3>
464<PRE>
465public <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A> <B>sortAndIterate</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inFiles,
466                                                              <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tempDir,
467                                                              boolean&nbsp;deleteInput)
468                                                       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>
469<DL>
470<DD>Perform a file sort from a set of input files and return an iterator.
471<P>
472<DD><DL>
473<DT><B>Parameters:</B><DD><CODE>inFiles</CODE> - the files to be sorted<DD><CODE>tempDir</CODE> - the directory where temp files are created during sort<DD><CODE>deleteInput</CODE> - should the input files be deleted as they are read?
474<DT><B>Returns:</B><DD>iterator the RawKeyValueIterator
475<DT><B>Throws:</B>
476<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>
477</DD>
478</DL>
479<HR>
480
481<A NAME="sort(org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
482sort</H3>
483<PRE>
484public void <B>sort</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;inFile,
485                 <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outFile)
486          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>
487<DL>
488<DD>The backwards compatible interface to sort.
489<P>
490<DD><DL>
491<DT><B>Parameters:</B><DD><CODE>inFile</CODE> - the input file to sort<DD><CODE>outFile</CODE> - the sorted output file
492<DT><B>Throws:</B>
493<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>
494</DD>
495</DL>
496<HR>
497
498<A NAME="merge(java.util.List, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
499merge</H3>
500<PRE>
501public <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A> <B>merge</B>(<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/io/SequenceFile.Sorter.SegmentDescriptor.html" title="class in org.apache.hadoop.io">SequenceFile.Sorter.SegmentDescriptor</A>&gt;&nbsp;segments,
502                                                     <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tmpDir)
503                                              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>
504<DL>
505<DD>Merges the list of segments of type <code>SegmentDescriptor</code>
506<P>
507<DD><DL>
508<DT><B>Parameters:</B><DD><CODE>segments</CODE> - the list of SegmentDescriptors<DD><CODE>tmpDir</CODE> - the directory to write temporary files into
509<DT><B>Returns:</B><DD>RawKeyValueIterator
510<DT><B>Throws:</B>
511<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>
512</DD>
513</DL>
514<HR>
515
516<A NAME="merge(org.apache.hadoop.fs.Path[], boolean, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
517merge</H3>
518<PRE>
519public <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A> <B>merge</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inNames,
520                                                     boolean&nbsp;deleteInputs,
521                                                     <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tmpDir)
522                                              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>
523<DL>
524<DD>Merges the contents of files passed in Path[] using a max factor value
525 that is already set
526<P>
527<DD><DL>
528<DT><B>Parameters:</B><DD><CODE>inNames</CODE> - the array of path names<DD><CODE>deleteInputs</CODE> - true if the input files should be deleted when
529 unnecessary<DD><CODE>tmpDir</CODE> - the directory to write temporary files into
530<DT><B>Returns:</B><DD>RawKeyValueIteratorMergeQueue
531<DT><B>Throws:</B>
532<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>
533</DD>
534</DL>
535<HR>
536
537<A NAME="merge(org.apache.hadoop.fs.Path[], boolean, int, org.apache.hadoop.fs.Path)"><!-- --></A><H3>
538merge</H3>
539<PRE>
540public <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A> <B>merge</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inNames,
541                                                     boolean&nbsp;deleteInputs,
542                                                     int&nbsp;factor,
543                                                     <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tmpDir)
544                                              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>
545<DL>
546<DD>Merges the contents of files passed in Path[]
547<P>
548<DD><DL>
549<DT><B>Parameters:</B><DD><CODE>inNames</CODE> - the array of path names<DD><CODE>deleteInputs</CODE> - true if the input files should be deleted when
550 unnecessary<DD><CODE>factor</CODE> - the factor that will be used as the maximum merge fan-in<DD><CODE>tmpDir</CODE> - the directory to write temporary files into
551<DT><B>Returns:</B><DD>RawKeyValueIteratorMergeQueue
552<DT><B>Throws:</B>
553<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>
554</DD>
555</DL>
556<HR>
557
558<A NAME="merge(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path, boolean)"><!-- --></A><H3>
559merge</H3>
560<PRE>
561public <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A> <B>merge</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inNames,
562                                                     <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;tempDir,
563                                                     boolean&nbsp;deleteInputs)
564                                              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>
565<DL>
566<DD>Merges the contents of files passed in Path[]
567<P>
568<DD><DL>
569<DT><B>Parameters:</B><DD><CODE>inNames</CODE> - the array of path names<DD><CODE>tempDir</CODE> - the directory for creating temp files during merge<DD><CODE>deleteInputs</CODE> - true if the input files should be deleted when
570 unnecessary
571<DT><B>Returns:</B><DD>RawKeyValueIteratorMergeQueue
572<DT><B>Throws:</B>
573<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>
574</DD>
575</DL>
576<HR>
577
578<A NAME="cloneFileAttributes(org.apache.hadoop.fs.Path, org.apache.hadoop.fs.Path, org.apache.hadoop.util.Progressable)"><!-- --></A><H3>
579cloneFileAttributes</H3>
580<PRE>
581public <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Writer.html" title="class in org.apache.hadoop.io">SequenceFile.Writer</A> <B>cloneFileAttributes</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;inputFile,
582                                               <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outputFile,
583                                               <A HREF="../../../../org/apache/hadoop/util/Progressable.html" title="interface in org.apache.hadoop.util">Progressable</A>&nbsp;prog)
584                                        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>
585<DL>
586<DD>Clones the attributes (like compression of the input file and creates a
587 corresponding Writer
588<P>
589<DD><DL>
590<DT><B>Parameters:</B><DD><CODE>inputFile</CODE> - the path of the input file whose attributes should be
591 cloned<DD><CODE>outputFile</CODE> - the path of the output file<DD><CODE>prog</CODE> - the Progressable to report status during the file write
592<DT><B>Returns:</B><DD>Writer
593<DT><B>Throws:</B>
594<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>
595</DD>
596</DL>
597<HR>
598
599<A NAME="writeFile(org.apache.hadoop.io.SequenceFile.Sorter.RawKeyValueIterator, org.apache.hadoop.io.SequenceFile.Writer)"><!-- --></A><H3>
600writeFile</H3>
601<PRE>
602public void <B>writeFile</B>(<A HREF="../../../../org/apache/hadoop/io/SequenceFile.Sorter.RawKeyValueIterator.html" title="interface in org.apache.hadoop.io">SequenceFile.Sorter.RawKeyValueIterator</A>&nbsp;records,
603                      <A HREF="../../../../org/apache/hadoop/io/SequenceFile.Writer.html" title="class in org.apache.hadoop.io">SequenceFile.Writer</A>&nbsp;writer)
604               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>
605<DL>
606<DD>Writes records from RawKeyValueIterator into a file represented by the
607 passed writer
608<P>
609<DD><DL>
610<DT><B>Parameters:</B><DD><CODE>records</CODE> - the RawKeyValueIterator<DD><CODE>writer</CODE> - the Writer created earlier
611<DT><B>Throws:</B>
612<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>
613</DD>
614</DL>
615<HR>
616
617<A NAME="merge(org.apache.hadoop.fs.Path[], org.apache.hadoop.fs.Path)"><!-- --></A><H3>
618merge</H3>
619<PRE>
620public void <B>merge</B>(<A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>[]&nbsp;inFiles,
621                  <A HREF="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</A>&nbsp;outFile)
622           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>
623<DL>
624<DD>Merge the provided files.
625<P>
626<DD><DL>
627<DT><B>Parameters:</B><DD><CODE>inFiles</CODE> - the array of input path names<DD><CODE>outFile</CODE> - the final output file
628<DT><B>Throws:</B>
629<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>
630</DD>
631</DL>
632<!-- ========= END OF CLASS DATA ========= -->
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634
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