source: proiecte/HadoopJUnit/hadoop-0.20.1/docs/api/org/apache/hadoop/io/BloomMapFile.Reader.html @ 120

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5<!-- Generated by javadoc (build 1.6.0_07) on Tue Sep 01 20:56:52 UTC 2009 -->
6<TITLE>
7BloomMapFile.Reader (Hadoop 0.20.1 API)
8</TITLE>
9
10<META NAME="date" CONTENT="2009-09-01">
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12<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style">
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18        parent.document.title="BloomMapFile.Reader (Hadoop 0.20.1 API)";
19    }
20}
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39  <TR ALIGN="center" VALIGN="top">
40  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A>&nbsp;</TD>
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43  <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1">    <A HREF="class-use/BloomMapFile.Reader.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A>&nbsp;</TD>
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55
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57<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
58&nbsp;<A HREF="../../../../org/apache/hadoop/io/BloomMapFile.html" title="class in org.apache.hadoop.io"><B>PREV CLASS</B></A>&nbsp;
59&nbsp;<A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Writer.html" title="class in org.apache.hadoop.io"><B>NEXT CLASS</B></A></FONT></TD>
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78<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
79  SUMMARY:&nbsp;NESTED&nbsp;|&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_summary">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_summary">METHOD</A></FONT></TD>
80<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
81DETAIL:&nbsp;FIELD&nbsp;|&nbsp;<A HREF="#constructor_detail">CONSTR</A>&nbsp;|&nbsp;<A HREF="#method_detail">METHOD</A></FONT></TD>
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87<HR>
88<!-- ======== START OF CLASS DATA ======== -->
89<H2>
90<FONT SIZE="-1">
91org.apache.hadoop.io</FONT>
92<BR>
93Class BloomMapFile.Reader</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/io/MapFile.Reader.html" title="class in org.apache.hadoop.io">org.apache.hadoop.io.MapFile.Reader</A>
97      <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.io.BloomMapFile.Reader</B>
98</PRE>
99<DL>
100<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></DD>
101</DL>
102<DL>
103<DT><B>Enclosing class:</B><DD><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.html" title="class in org.apache.hadoop.io">BloomMapFile</A></DD>
104</DL>
105<HR>
106<DL>
107<DT><PRE>public static class <B>BloomMapFile.Reader</B><DT>extends <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html" title="class in org.apache.hadoop.io">MapFile.Reader</A></DL>
108</PRE>
109
110<P>
111<HR>
112
113<P>
114
115<!-- ======== CONSTRUCTOR SUMMARY ======== -->
116
117<A NAME="constructor_summary"><!-- --></A>
118<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
119<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
120<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
121<B>Constructor Summary</B></FONT></TH>
122</TR>
123<TR BGCOLOR="white" CLASS="TableRowColor">
124<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html#BloomMapFile.Reader(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.conf.Configuration)">BloomMapFile.Reader</A></B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
125                    <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;dirName,
126                    <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</CODE>
127
128<BR>
129&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
130</TR>
131<TR BGCOLOR="white" CLASS="TableRowColor">
132<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html#BloomMapFile.Reader(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.io.WritableComparator, org.apache.hadoop.conf.Configuration)">BloomMapFile.Reader</A></B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
133                    <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;dirName,
134                    <A HREF="../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</A>&nbsp;comparator,
135                    <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)</CODE>
136
137<BR>
138&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
139</TR>
140<TR BGCOLOR="white" CLASS="TableRowColor">
141<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html#BloomMapFile.Reader(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.io.WritableComparator, org.apache.hadoop.conf.Configuration, boolean)">BloomMapFile.Reader</A></B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
142                    <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;dirName,
143                    <A HREF="../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</A>&nbsp;comparator,
144                    <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
145                    boolean&nbsp;open)</CODE>
146
147<BR>
148&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
149</TR>
150</TABLE>
151&nbsp;
152<!-- ========== METHOD SUMMARY =========== -->
153
154<A NAME="method_summary"><!-- --></A>
155<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
156<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
157<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
158<B>Method Summary</B></FONT></TH>
159</TR>
160<TR BGCOLOR="white" CLASS="TableRowColor">
161<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
162<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A></CODE></FONT></TD>
163<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html#get(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)">get</A></B>(<A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&nbsp;key,
164    <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A>&nbsp;val)</CODE>
165
166<BR>
167&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Fast version of the
168 <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#get(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)"><CODE>MapFile.Reader.get(WritableComparable, Writable)</CODE></A> method.</TD>
169</TR>
170<TR BGCOLOR="white" CLASS="TableRowColor">
171<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
172<CODE>&nbsp;<A HREF="../../../../org/apache/hadoop/util/bloom/Filter.html" title="class in org.apache.hadoop.util.bloom">Filter</A></CODE></FONT></TD>
173<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html#getBloomFilter()">getBloomFilter</A></B>()</CODE>
174
175<BR>
176&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retrieve the Bloom filter used by this instance of the Reader.</TD>
177</TR>
178<TR BGCOLOR="white" CLASS="TableRowColor">
179<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
180<CODE>&nbsp;boolean</CODE></FONT></TD>
181<TD><CODE><B><A HREF="../../../../org/apache/hadoop/io/BloomMapFile.Reader.html#probablyHasKey(org.apache.hadoop.io.WritableComparable)">probablyHasKey</A></B>(<A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&nbsp;key)</CODE>
182
183<BR>
184&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if this MapFile has the indicated key.</TD>
185</TR>
186</TABLE>
187&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.io.MapFile.Reader"><!-- --></A>
188<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
189<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
190<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.io.<A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html" title="class in org.apache.hadoop.io">MapFile.Reader</A></B></TH>
191</TR>
192<TR BGCOLOR="white" CLASS="TableRowColor">
193<TD><CODE><A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#close()">close</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#createDataFileReader(org.apache.hadoop.fs.FileSystem, org.apache.hadoop.fs.Path, org.apache.hadoop.conf.Configuration)">createDataFileReader</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#finalKey(org.apache.hadoop.io.WritableComparable)">finalKey</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#getClosest(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)">getClosest</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#getClosest(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable, boolean)">getClosest</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#getKeyClass()">getKeyClass</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#getValueClass()">getValueClass</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#midKey()">midKey</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#next(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)">next</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#open(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.io.WritableComparator, org.apache.hadoop.conf.Configuration)">open</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#reset()">reset</A>, <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#seek(org.apache.hadoop.io.WritableComparable)">seek</A></CODE></TD>
194</TR>
195</TABLE>
196&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
197<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
198<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
199<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>
200</TR>
201<TR BGCOLOR="white" CLASS="TableRowColor">
202<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>
203</TR>
204</TABLE>
205&nbsp;
206<P>
207
208<!-- ========= CONSTRUCTOR DETAIL ======== -->
209
210<A NAME="constructor_detail"><!-- --></A>
211<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
212<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
213<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
214<B>Constructor Detail</B></FONT></TH>
215</TR>
216</TABLE>
217
218<A NAME="BloomMapFile.Reader(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
219BloomMapFile.Reader</H3>
220<PRE>
221public <B>BloomMapFile.Reader</B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
222                           <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;dirName,
223                           <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)
224                    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>
225<DL>
226<DL>
227
228<DT><B>Throws:</B>
229<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>
230</DL>
231<HR>
232
233<A NAME="BloomMapFile.Reader(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.io.WritableComparator, org.apache.hadoop.conf.Configuration, boolean)"><!-- --></A><H3>
234BloomMapFile.Reader</H3>
235<PRE>
236public <B>BloomMapFile.Reader</B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
237                           <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;dirName,
238                           <A HREF="../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</A>&nbsp;comparator,
239                           <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf,
240                           boolean&nbsp;open)
241                    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>
242<DL>
243<DL>
244
245<DT><B>Throws:</B>
246<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>
247</DL>
248<HR>
249
250<A NAME="BloomMapFile.Reader(org.apache.hadoop.fs.FileSystem, java.lang.String, org.apache.hadoop.io.WritableComparator, org.apache.hadoop.conf.Configuration)"><!-- --></A><H3>
251BloomMapFile.Reader</H3>
252<PRE>
253public <B>BloomMapFile.Reader</B>(<A HREF="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</A>&nbsp;fs,
254                           <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;dirName,
255                           <A HREF="../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</A>&nbsp;comparator,
256                           <A HREF="../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</A>&nbsp;conf)
257                    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>
258<DL>
259<DL>
260
261<DT><B>Throws:</B>
262<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>
263</DL>
264
265<!-- ============ METHOD DETAIL ========== -->
266
267<A NAME="method_detail"><!-- --></A>
268<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
269<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
270<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
271<B>Method Detail</B></FONT></TH>
272</TR>
273</TABLE>
274
275<A NAME="probablyHasKey(org.apache.hadoop.io.WritableComparable)"><!-- --></A><H3>
276probablyHasKey</H3>
277<PRE>
278public boolean <B>probablyHasKey</B>(<A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&nbsp;key)
279                       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>
280<DL>
281<DD>Checks if this MapFile has the indicated key. The membership test is
282 performed using a Bloom filter, so the result has always non-zero
283 probability of false positives.
284<P>
285<DD><DL>
286<DT><B>Parameters:</B><DD><CODE>key</CODE> - key to check
287<DT><B>Returns:</B><DD>false iff key doesn't exist, true if key probably exists.
288<DT><B>Throws:</B>
289<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>
290</DD>
291</DL>
292<HR>
293
294<A NAME="get(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)"><!-- --></A><H3>
295get</H3>
296<PRE>
297public <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A> <B>get</B>(<A HREF="../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</A>&nbsp;key,
298                    <A HREF="../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</A>&nbsp;val)
299             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>
300<DL>
301<DD>Fast version of the
302 <A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#get(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)"><CODE>MapFile.Reader.get(WritableComparable, Writable)</CODE></A> method. First
303 it checks the Bloom filter for the existence of the key, and only if
304 present it performs the real get operation. This yields significant
305 performance improvements for get operations on sparsely populated files.
306<P>
307<DD><DL>
308<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html#get(org.apache.hadoop.io.WritableComparable, org.apache.hadoop.io.Writable)">get</A></CODE> in class <CODE><A HREF="../../../../org/apache/hadoop/io/MapFile.Reader.html" title="class in org.apache.hadoop.io">MapFile.Reader</A></CODE></DL>
309</DD>
310<DD><DL>
311
312<DT><B>Throws:</B>
313<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>
314</DD>
315</DL>
316<HR>
317
318<A NAME="getBloomFilter()"><!-- --></A><H3>
319getBloomFilter</H3>
320<PRE>
321public <A HREF="../../../../org/apache/hadoop/util/bloom/Filter.html" title="class in org.apache.hadoop.util.bloom">Filter</A> <B>getBloomFilter</B>()</PRE>
322<DL>
323<DD>Retrieve the Bloom filter used by this instance of the Reader.
324<P>
325<DD><DL>
326
327<DT><B>Returns:</B><DD>a Bloom filter (see <A HREF="../../../../org/apache/hadoop/util/bloom/Filter.html" title="class in org.apache.hadoop.util.bloom"><CODE>Filter</CODE></A>)</DL>
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