source: proiecte/HadoopJUnit/hadoop-0.20.1/docs/api/org/apache/hadoop/fs/FSDataInputStream.html @ 120

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7FSDataInputStream (Hadoop 0.20.1 API)
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79  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;<A HREF="#fields_inherited_from_class_java.io.FilterInputStream">FIELD</A>&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
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89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.fs</FONT>
92<BR>
93Class FSDataInputStream</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="http://java.sun.com/javase/6/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">java.io.InputStream</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true" title="class or interface in java.io">java.io.FilterInputStream</A>
98          <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io">java.io.DataInputStream</A>
99              <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.fs.FSDataInputStream</B>
100</PRE>
101<DL>
102<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/javase/6/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</A>, <A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html" title="interface in org.apache.hadoop.fs">PositionedReadable</A>, <A HREF="../../../../org/apache/hadoop/fs/Seekable.html" title="interface in org.apache.hadoop.fs">Seekable</A></DD>
103</DL>
104<HR>
105<DL>
106<DT><PRE>public class <B>FSDataInputStream</B><DT>extends <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io">DataInputStream</A><DT>implements <A HREF="../../../../org/apache/hadoop/fs/Seekable.html" title="interface in org.apache.hadoop.fs">Seekable</A>, <A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html" title="interface in org.apache.hadoop.fs">PositionedReadable</A></DL>
107</PRE>
108
109<P>
110Utility that wraps a <A HREF="../../../../org/apache/hadoop/fs/FSInputStream.html" title="class in org.apache.hadoop.fs"><CODE>FSInputStream</CODE></A> in a <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io"><CODE>DataInputStream</CODE></A>
111 and buffers input through a <A HREF="http://java.sun.com/javase/6/docs/api/java/io/BufferedInputStream.html?is-external=true" title="class or interface in java.io"><CODE>BufferedInputStream</CODE></A>.
112<P>
113
114<P>
115<HR>
116
117<P>
118<!-- =========== FIELD SUMMARY =========== -->
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123<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
124<B>Field Summary</B></FONT></TH>
125</TR>
126</TABLE>
127&nbsp;<A NAME="fields_inherited_from_class_java.io.FilterInputStream"><!-- --></A>
128<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
129<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
130<TH ALIGN="left"><B>Fields inherited from class java.io.<A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true" title="class or interface in java.io">FilterInputStream</A></B></TH>
131</TR>
132<TR BGCOLOR="white" CLASS="TableRowColor">
133<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#in" title="class or interface in java.io">in</A></CODE></TD>
134</TR>
135</TABLE>
136&nbsp;
137<!-- ======== CONSTRUCTOR SUMMARY ======== -->
138
139<A NAME="constructor_summary"><!-- --></A>
140<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
141<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
142<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
143<B>Constructor Summary</B></FONT></TH>
144</TR>
145<TR BGCOLOR="white" CLASS="TableRowColor">
146<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#FSDataInputStream(java.io.InputStream)">FSDataInputStream</A></B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A>&nbsp;in)</CODE>
147
148<BR>
149&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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151</TABLE>
152&nbsp;
153<!-- ========== METHOD SUMMARY =========== -->
154
155<A NAME="method_summary"><!-- --></A>
156<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
157<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
158<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
159<B>Method Summary</B></FONT></TH>
160</TR>
161<TR BGCOLOR="white" CLASS="TableRowColor">
162<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
163<CODE>&nbsp;long</CODE></FONT></TD>
164<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#getPos()">getPos</A></B>()</CODE>
165
166<BR>
167&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return the current offset from the start of the file</TD>
168</TR>
169<TR BGCOLOR="white" CLASS="TableRowColor">
170<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
171<CODE>&nbsp;int</CODE></FONT></TD>
172<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#read(long, byte[], int, int)">read</A></B>(long&nbsp;position,
173     byte[]&nbsp;buffer,
174     int&nbsp;offset,
175     int&nbsp;length)</CODE>
176
177<BR>
178&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Read upto the specified number of bytes, from a given
179 position within a file, and return the number of bytes read.</TD>
180</TR>
181<TR BGCOLOR="white" CLASS="TableRowColor">
182<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
183<CODE>&nbsp;void</CODE></FONT></TD>
184<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#readFully(long, byte[])">readFully</A></B>(long&nbsp;position,
185          byte[]&nbsp;buffer)</CODE>
186
187<BR>
188&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Read number of bytes equalt to the length of the buffer, from a given
189 position within a file.</TD>
190</TR>
191<TR BGCOLOR="white" CLASS="TableRowColor">
192<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
193<CODE>&nbsp;void</CODE></FONT></TD>
194<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#readFully(long, byte[], int, int)">readFully</A></B>(long&nbsp;position,
195          byte[]&nbsp;buffer,
196          int&nbsp;offset,
197          int&nbsp;length)</CODE>
198
199<BR>
200&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Read the specified number of bytes, from a given
201 position within a file.</TD>
202</TR>
203<TR BGCOLOR="white" CLASS="TableRowColor">
204<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
205<CODE>&nbsp;void</CODE></FONT></TD>
206<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#seek(long)">seek</A></B>(long&nbsp;desired)</CODE>
207
208<BR>
209&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Seek to the given offset from the start of the file.</TD>
210</TR>
211<TR BGCOLOR="white" CLASS="TableRowColor">
212<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
213<CODE>&nbsp;boolean</CODE></FONT></TD>
214<TD><CODE><B><A HREF="../../../../org/apache/hadoop/fs/FSDataInputStream.html#seekToNewSource(long)">seekToNewSource</A></B>(long&nbsp;targetPos)</CODE>
215
216<BR>
217&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Seeks a different copy of the data.</TD>
218</TR>
219</TABLE>
220&nbsp;<A NAME="methods_inherited_from_class_java.io.DataInputStream"><!-- --></A>
221<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
222<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
223<TH ALIGN="left"><B>Methods inherited from class java.io.<A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io">DataInputStream</A></B></TH>
224</TR>
225<TR BGCOLOR="white" CLASS="TableRowColor">
226<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#read(byte[])" title="class or interface in java.io">read</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#read(byte[], int, int)" title="class or interface in java.io">read</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readBoolean()" title="class or interface in java.io">readBoolean</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readByte()" title="class or interface in java.io">readByte</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readChar()" title="class or interface in java.io">readChar</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readDouble()" title="class or interface in java.io">readDouble</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readFloat()" title="class or interface in java.io">readFloat</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readFully(byte[])" title="class or interface in java.io">readFully</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readFully(byte[], int, int)" title="class or interface in java.io">readFully</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readInt()" title="class or interface in java.io">readInt</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readLine()" title="class or interface in java.io">readLine</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readLong()" title="class or interface in java.io">readLong</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readShort()" title="class or interface in java.io">readShort</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readUnsignedByte()" title="class or interface in java.io">readUnsignedByte</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readUnsignedShort()" title="class or interface in java.io">readUnsignedShort</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readUTF()" title="class or interface in java.io">readUTF</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#readUTF(java.io.DataInput)" title="class or interface in java.io">readUTF</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/DataInputStream.html?is-external=true#skipBytes(int)" title="class or interface in java.io">skipBytes</A></CODE></TD>
227</TR>
228</TABLE>
229&nbsp;<A NAME="methods_inherited_from_class_java.io.FilterInputStream"><!-- --></A>
230<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
231<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
232<TH ALIGN="left"><B>Methods inherited from class java.io.<A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true" title="class or interface in java.io">FilterInputStream</A></B></TH>
233</TR>
234<TR BGCOLOR="white" CLASS="TableRowColor">
235<TD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#available()" title="class or interface in java.io">available</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#close()" title="class or interface in java.io">close</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#mark(int)" title="class or interface in java.io">mark</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#markSupported()" title="class or interface in java.io">markSupported</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#read()" title="class or interface in java.io">read</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#reset()" title="class or interface in java.io">reset</A>, <A HREF="http://java.sun.com/javase/6/docs/api/java/io/FilterInputStream.html?is-external=true#skip(long)" title="class or interface in java.io">skip</A></CODE></TD>
236</TR>
237</TABLE>
238&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
239<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
240<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
241<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>
242</TR>
243<TR BGCOLOR="white" CLASS="TableRowColor">
244<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>
245</TR>
246</TABLE>
247&nbsp;
248<P>
249
250<!-- ========= CONSTRUCTOR DETAIL ======== -->
251
252<A NAME="constructor_detail"><!-- --></A>
253<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
254<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
255<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
256<B>Constructor Detail</B></FONT></TH>
257</TR>
258</TABLE>
259
260<A NAME="FSDataInputStream(java.io.InputStream)"><!-- --></A><H3>
261FSDataInputStream</H3>
262<PRE>
263public <B>FSDataInputStream</B>(<A HREF="http://java.sun.com/javase/6/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A>&nbsp;in)
264                  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>
265<DL>
266<DL>
267
268<DT><B>Throws:</B>
269<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>
270</DL>
271
272<!-- ============ METHOD DETAIL ========== -->
273
274<A NAME="method_detail"><!-- --></A>
275<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
276<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
277<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
278<B>Method Detail</B></FONT></TH>
279</TR>
280</TABLE>
281
282<A NAME="seek(long)"><!-- --></A><H3>
283seek</H3>
284<PRE>
285public void <B>seek</B>(long&nbsp;desired)
286          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>
287<DL>
288<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#seek(long)">Seekable</A></CODE></B></DD>
289<DD>Seek to the given offset from the start of the file.
290 The next read() will be from that location.  Can't
291 seek past the end of the file.
292<P>
293<DD><DL>
294<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#seek(long)">seek</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html" title="interface in org.apache.hadoop.fs">Seekable</A></CODE></DL>
295</DD>
296<DD><DL>
297
298<DT><B>Throws:</B>
299<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>
300</DD>
301</DL>
302<HR>
303
304<A NAME="getPos()"><!-- --></A><H3>
305getPos</H3>
306<PRE>
307public long <B>getPos</B>()
308            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>
309<DL>
310<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#getPos()">Seekable</A></CODE></B></DD>
311<DD>Return the current offset from the start of the file
312<P>
313<DD><DL>
314<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#getPos()">getPos</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html" title="interface in org.apache.hadoop.fs">Seekable</A></CODE></DL>
315</DD>
316<DD><DL>
317
318<DT><B>Throws:</B>
319<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>
320</DD>
321</DL>
322<HR>
323
324<A NAME="read(long, byte[], int, int)"><!-- --></A><H3>
325read</H3>
326<PRE>
327public int <B>read</B>(long&nbsp;position,
328                byte[]&nbsp;buffer,
329                int&nbsp;offset,
330                int&nbsp;length)
331         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>
332<DL>
333<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html#read(long, byte[], int, int)">PositionedReadable</A></CODE></B></DD>
334<DD>Read upto the specified number of bytes, from a given
335 position within a file, and return the number of bytes read. This does not
336 change the current offset of a file, and is thread-safe.
337<P>
338<DD><DL>
339<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html#read(long, byte[], int, int)">read</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html" title="interface in org.apache.hadoop.fs">PositionedReadable</A></CODE></DL>
340</DD>
341<DD><DL>
342
343<DT><B>Throws:</B>
344<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>
345</DD>
346</DL>
347<HR>
348
349<A NAME="readFully(long, byte[], int, int)"><!-- --></A><H3>
350readFully</H3>
351<PRE>
352public void <B>readFully</B>(long&nbsp;position,
353                      byte[]&nbsp;buffer,
354                      int&nbsp;offset,
355                      int&nbsp;length)
356               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>
357<DL>
358<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html#readFully(long, byte[], int, int)">PositionedReadable</A></CODE></B></DD>
359<DD>Read the specified number of bytes, from a given
360 position within a file. This does not
361 change the current offset of a file, and is thread-safe.
362<P>
363<DD><DL>
364<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html#readFully(long, byte[], int, int)">readFully</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html" title="interface in org.apache.hadoop.fs">PositionedReadable</A></CODE></DL>
365</DD>
366<DD><DL>
367
368<DT><B>Throws:</B>
369<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>
370</DD>
371</DL>
372<HR>
373
374<A NAME="readFully(long, byte[])"><!-- --></A><H3>
375readFully</H3>
376<PRE>
377public void <B>readFully</B>(long&nbsp;position,
378                      byte[]&nbsp;buffer)
379               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>
380<DL>
381<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html#readFully(long, byte[])">PositionedReadable</A></CODE></B></DD>
382<DD>Read number of bytes equalt to the length of the buffer, from a given
383 position within a file. This does not
384 change the current offset of a file, and is thread-safe.
385<P>
386<DD><DL>
387<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html#readFully(long, byte[])">readFully</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/fs/PositionedReadable.html" title="interface in org.apache.hadoop.fs">PositionedReadable</A></CODE></DL>
388</DD>
389<DD><DL>
390
391<DT><B>Throws:</B>
392<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>
393</DD>
394</DL>
395<HR>
396
397<A NAME="seekToNewSource(long)"><!-- --></A><H3>
398seekToNewSource</H3>
399<PRE>
400public boolean <B>seekToNewSource</B>(long&nbsp;targetPos)
401                        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>
402<DL>
403<DD><B>Description copied from interface: <CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#seekToNewSource(long)">Seekable</A></CODE></B></DD>
404<DD>Seeks a different copy of the data.  Returns true if
405 found a new source, false otherwise.
406<P>
407<DD><DL>
408<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html#seekToNewSource(long)">seekToNewSource</A></CODE> in interface <CODE><A HREF="../../../../org/apache/hadoop/fs/Seekable.html" title="interface in org.apache.hadoop.fs">Seekable</A></CODE></DL>
409</DD>
410<DD><DL>
411
412<DT><B>Throws:</B>
413<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>
414</DD>
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