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49Package <A HREF="../../api/org/apache/hadoop/mapred/join/package-summary.html" target="_top"><tt>org.apache.hadoop.mapred.join</tt></A>
50</H2>
51<p>
52<a NAME="Changed"></a>
53<TABLE summary="Changed Classes and Interfaces" BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
54<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
55  <TD VALIGN="TOP" COLSPAN=2><FONT SIZE="+1"><B>Changed Classes and Interfaces</B></FONT></TD>
56</TR>
57<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
58  <TD VALIGN="TOP" WIDTH="25%">
59  <A NAME="ArrayListBackedIterator"></A>
60  <nobr><A HREF="org.apache.hadoop.mapred.join.ArrayListBackedIterator.html">ArrayListBackedIterator</A></nobr>
61  </TD>
62  <TD VALIGN="TOP">This class provides an implementation of ResetableIterator.</TD>
63</TR>
64<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
65  <TD VALIGN="TOP" WIDTH="25%">
66  <A NAME="ComposableInputFormat"></A>
67  <nobr><A HREF="org.apache.hadoop.mapred.join.ComposableInputFormat.html"><I>ComposableInputFormat</I></A></nobr>
68  </TD>
69  <TD VALIGN="TOP">Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.</TD>
70</TR>
71<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
72  <TD VALIGN="TOP" WIDTH="25%">
73  <A NAME="ComposableRecordReader"></A>
74  <nobr><A HREF="org.apache.hadoop.mapred.join.ComposableRecordReader.html"><I>ComposableRecordReader</I></A></nobr>
75  </TD>
76  <TD VALIGN="TOP">Additional operations required of a RecordReader to participate in a join.</TD>
77</TR>
78<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
79  <TD VALIGN="TOP" WIDTH="25%">
80  <A NAME="CompositeInputFormat"></A>
81  <nobr><A HREF="org.apache.hadoop.mapred.join.CompositeInputFormat.html">CompositeInputFormat</A></nobr>
82  </TD>
83  <TD VALIGN="TOP">An InputFormat capable of performing joins over a set of data sources sorted and partitioned the same way.</TD>
84</TR>
85<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
86  <TD VALIGN="TOP" WIDTH="25%">
87  <A NAME="CompositeRecordReader"></A>
88  <nobr><A HREF="org.apache.hadoop.mapred.join.CompositeRecordReader.html">CompositeRecordReader</A></nobr>
89  </TD>
90  <TD VALIGN="TOP">A RecordReader that can effect joins of RecordReaders sharing a common key type and partitioning.</TD>
91</TR>
92<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
93  <TD VALIGN="TOP" WIDTH="25%">
94  <A NAME="InnerJoinRecordReader"></A>
95  <nobr><A HREF="org.apache.hadoop.mapred.join.InnerJoinRecordReader.html">InnerJoinRecordReader</A></nobr>
96  </TD>
97  <TD VALIGN="TOP">Full inner join.</TD>
98</TR>
99<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
100  <TD VALIGN="TOP" WIDTH="25%">
101  <A NAME="JoinRecordReader"></A>
102  <nobr><A HREF="org.apache.hadoop.mapred.join.JoinRecordReader.html">JoinRecordReader</A></nobr>
103  </TD>
104  <TD VALIGN="TOP">Base class for Composite joins returning Tuples of arbitrary Writables.</TD>
105</TR>
106<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
107  <TD VALIGN="TOP" WIDTH="25%">
108  <A NAME="JoinRecordReader.JoinDelegationIterator"></A>
109  <nobr><A HREF="org.apache.hadoop.mapred.join.JoinRecordReader.JoinDelegationIterator.html">JoinRecordReader.JoinDelegationIterator</A></nobr>
110  </TD>
111  <TD VALIGN="TOP">Since the JoinCollector is effecting our operation we need only provide an iterator proxy wrapping its operation.</TD>
112</TR>
113<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
114  <TD VALIGN="TOP" WIDTH="25%">
115  <A NAME="MultiFilterRecordReader"></A>
116  <nobr><A HREF="org.apache.hadoop.mapred.join.MultiFilterRecordReader.html">MultiFilterRecordReader</A></nobr>
117  </TD>
118  <TD VALIGN="TOP">Base class for Composite join returning values derived from multiple sources but generally not tuples.</TD>
119</TR>
120<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
121  <TD VALIGN="TOP" WIDTH="25%">
122  <A NAME="MultiFilterRecordReader.MultiFilterDelegationIterator"></A>
123  <nobr><A HREF="org.apache.hadoop.mapred.join.MultiFilterRecordReader.MultiFilterDelegationIterator.html">MultiFilterRecordReader.<br>MultiFilterDelegationIterator</A></nobr>
124  </TD>
125  <TD VALIGN="TOP">Proxy the JoinCollector but include callback to emit.</TD>
126</TR>
127<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
128  <TD VALIGN="TOP" WIDTH="25%">
129  <A NAME="OuterJoinRecordReader"></A>
130  <nobr><A HREF="org.apache.hadoop.mapred.join.OuterJoinRecordReader.html">OuterJoinRecordReader</A></nobr>
131  </TD>
132  <TD VALIGN="TOP">Full outer join.</TD>
133</TR>
134<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
135  <TD VALIGN="TOP" WIDTH="25%">
136  <A NAME="OverrideRecordReader"></A>
137  <nobr><A HREF="org.apache.hadoop.mapred.join.OverrideRecordReader.html">OverrideRecordReader</A></nobr>
138  </TD>
139  <TD VALIGN="TOP">Prefer the &quot;rightmost&quot; data source for this key.</TD>
140</TR>
141<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
142  <TD VALIGN="TOP" WIDTH="25%">
143  <A NAME="Parser.Node"></A>
144  <nobr><A HREF="org.apache.hadoop.mapred.join.Parser.Node.html">Parser.Node</A></nobr>
145  </TD>
146  <TD>&nbsp;</TD>
147</TR>
148<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
149  <TD VALIGN="TOP" WIDTH="25%">
150  <A NAME="Parser.TType"></A>
151  <nobr><A HREF="org.apache.hadoop.mapred.join.Parser.TType.html">Parser.TType</A></nobr>
152  </TD>
153  <TD>&nbsp;</TD>
154</TR>
155<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
156  <TD VALIGN="TOP" WIDTH="25%">
157  <A NAME="ResetableIterator"></A>
158  <nobr><A HREF="org.apache.hadoop.mapred.join.ResetableIterator.html"><I>ResetableIterator</I></A></nobr>
159  </TD>
160  <TD VALIGN="TOP">This defines an interface to a stateful Iterator that can replay elements added to it directly.</TD>
161</TR>
162<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
163  <TD VALIGN="TOP" WIDTH="25%">
164  <A NAME="ResetableIterator.EMPTY"></A>
165  <nobr><A HREF="org.apache.hadoop.mapred.join.ResetableIterator.EMPTY.html">ResetableIterator.EMPTY</A></nobr>
166  </TD>
167  <TD>&nbsp;</TD>
168</TR>
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170  <TD VALIGN="TOP" WIDTH="25%">
171  <A NAME="StreamBackedIterator"></A>
172  <nobr><A HREF="org.apache.hadoop.mapred.join.StreamBackedIterator.html">StreamBackedIterator</A></nobr>
173  </TD>
174  <TD VALIGN="TOP">This class provides an implementation of ResetableIterator.</TD>
175</TR>
176<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
177  <TD VALIGN="TOP" WIDTH="25%">
178  <A NAME="TupleWritable"></A>
179  <nobr><A HREF="org.apache.hadoop.mapred.join.TupleWritable.html">TupleWritable</A></nobr>
180  </TD>
181  <TD VALIGN="TOP">Writable type storing multiple <A HREF="../../api/org.apache.hadoop.mapred.join.TupleWritable.org/apache/hadoop/io/Writable}s/.html" target="_top">Thi</A> is *not* a general-purpose tuple type.</TD>
182</TR>
183<TR BGCOLOR="#FFFFFF" CLASS="TableRowColor">
184  <TD VALIGN="TOP" WIDTH="25%">
185  <A NAME="WrappedRecordReader"></A>
186  <nobr><A HREF="org.apache.hadoop.mapred.join.WrappedRecordReader.html">WrappedRecordReader</A></nobr>
187  </TD>
188  <TD VALIGN="TOP">Proxy class for a RecordReader participating in the join framework.</TD>
189</TR>
190</TABLE>
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