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Posted to commits@hbase.apache.org by di...@apache.org on 2016/09/29 20:09:53 UTC
[23/52] [partial] hbase-site git commit: Published site at
63808a224c8689d07e55f90efd25f9597b0d04dd.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/044b3379/apidocs/src-html/org/apache/hadoop/hbase/filter/MultiRowRangeFilter.html
----------------------------------------------------------------------
diff --git a/apidocs/src-html/org/apache/hadoop/hbase/filter/MultiRowRangeFilter.html b/apidocs/src-html/org/apache/hadoop/hbase/filter/MultiRowRangeFilter.html
index 480107e..070e398 100644
--- a/apidocs/src-html/org/apache/hadoop/hbase/filter/MultiRowRangeFilter.html
+++ b/apidocs/src-html/org/apache/hadoop/hbase/filter/MultiRowRangeFilter.html
@@ -33,120 +33,120 @@
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.Cell;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.CellUtil;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.HConstants;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.KeyValueUtil;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.protobuf.generated.FilterProtos;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.util.ByteStringer;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.34"></a>
-<span class="sourceLineNo">035</span><a name="line.35"></a>
-<span class="sourceLineNo">036</span>import com.google.protobuf.InvalidProtocolBufferException;<a name="line.36"></a>
-<span class="sourceLineNo">037</span><a name="line.37"></a>
-<span class="sourceLineNo">038</span>/**<a name="line.38"></a>
-<span class="sourceLineNo">039</span> * Filter to support scan multiple row key ranges. It can construct the row key ranges from the<a name="line.39"></a>
-<span class="sourceLineNo">040</span> * passed list which can be accessed by each region server.<a name="line.40"></a>
-<span class="sourceLineNo">041</span> *<a name="line.41"></a>
-<span class="sourceLineNo">042</span> * HBase is quite efficient when scanning only one small row key range. If user needs to specify<a name="line.42"></a>
-<span class="sourceLineNo">043</span> * multiple row key ranges in one scan, the typical solutions are: 1. through FilterList which is a<a name="line.43"></a>
-<span class="sourceLineNo">044</span> * list of row key Filters, 2. using the SQL layer over HBase to join with two table, such as hive,<a name="line.44"></a>
-<span class="sourceLineNo">045</span> * phoenix etc. However, both solutions are inefficient. Both of them can't utilize the range info<a name="line.45"></a>
-<span class="sourceLineNo">046</span> * to perform fast forwarding during scan which is quite time consuming. If the number of ranges<a name="line.46"></a>
-<span class="sourceLineNo">047</span> * are quite big (e.g. millions), join is a proper solution though it is slow. However, there are<a name="line.47"></a>
-<span class="sourceLineNo">048</span> * cases that user wants to specify a small number of ranges to scan (e.g. &lt;1000 ranges). Both<a name="line.48"></a>
-<span class="sourceLineNo">049</span> * solutions can't provide satisfactory performance in such case. MultiRowRangeFilter is to support<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * such usec ase (scan multiple row key ranges), which can construct the row key ranges from user<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * specified list and perform fast-forwarding during scan. Thus, the scan will be quite efficient.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> */<a name="line.52"></a>
-<span class="sourceLineNo">053</span>@InterfaceAudience.Public<a name="line.53"></a>
-<span class="sourceLineNo">054</span>@InterfaceStability.Evolving<a name="line.54"></a>
-<span class="sourceLineNo">055</span>public class MultiRowRangeFilter extends FilterBase {<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
-<span class="sourceLineNo">057</span> private List<RowRange> rangeList;<a name="line.57"></a>
-<span class="sourceLineNo">058</span><a name="line.58"></a>
-<span class="sourceLineNo">059</span> private static final int ROW_BEFORE_FIRST_RANGE = -1;<a name="line.59"></a>
-<span class="sourceLineNo">060</span> private boolean EXCLUSIVE = false;<a name="line.60"></a>
-<span class="sourceLineNo">061</span> private boolean done = false;<a name="line.61"></a>
-<span class="sourceLineNo">062</span> private boolean initialized = false;<a name="line.62"></a>
-<span class="sourceLineNo">063</span> private int index;<a name="line.63"></a>
-<span class="sourceLineNo">064</span> private RowRange range;<a name="line.64"></a>
-<span class="sourceLineNo">065</span> private ReturnCode currentReturnCode;<a name="line.65"></a>
-<span class="sourceLineNo">066</span><a name="line.66"></a>
-<span class="sourceLineNo">067</span> /**<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * @param list A list of <code>RowRange</code><a name="line.68"></a>
-<span class="sourceLineNo">069</span> * @throws java.io.IOException<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * throw an exception if the range list is not in an natural order or any<a name="line.70"></a>
-<span class="sourceLineNo">071</span> * <code>RowRange</code> is invalid<a name="line.71"></a>
-<span class="sourceLineNo">072</span> */<a name="line.72"></a>
-<span class="sourceLineNo">073</span> public MultiRowRangeFilter(List<RowRange> list) throws IOException {<a name="line.73"></a>
-<span class="sourceLineNo">074</span> this.rangeList = sortAndMerge(list);<a name="line.74"></a>
-<span class="sourceLineNo">075</span> }<a name="line.75"></a>
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-<span class="sourceLineNo">079</span> return done;<a name="line.79"></a>
-<span class="sourceLineNo">080</span> }<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span> public List<RowRange> getRowRanges() {<a name="line.82"></a>
-<span class="sourceLineNo">083</span> return this.rangeList;<a name="line.83"></a>
-<span class="sourceLineNo">084</span> }<a name="line.84"></a>
-<span class="sourceLineNo">085</span><a name="line.85"></a>
-<span class="sourceLineNo">086</span> @Override<a name="line.86"></a>
-<span class="sourceLineNo">087</span> public boolean filterRowKey(Cell firstRowCell) {<a name="line.87"></a>
-<span class="sourceLineNo">088</span> if (filterAllRemaining()) return true;<a name="line.88"></a>
-<span class="sourceLineNo">089</span> // If it is the first time of running, calculate the current range index for<a name="line.89"></a>
-<span class="sourceLineNo">090</span> // the row key. If index is out of bound which happens when the start row<a name="line.90"></a>
-<span class="sourceLineNo">091</span> // user sets is after the largest stop row of the ranges, stop the scan.<a name="line.91"></a>
-<span class="sourceLineNo">092</span> // If row key is after the current range, find the next range and update index.<a name="line.92"></a>
-<span class="sourceLineNo">093</span> byte[] rowArr = firstRowCell.getRowArray();<a name="line.93"></a>
-<span class="sourceLineNo">094</span> int length = firstRowCell.getRowLength();<a name="line.94"></a>
-<span class="sourceLineNo">095</span> int offset = firstRowCell.getRowOffset();<a name="line.95"></a>
-<span class="sourceLineNo">096</span> if (!initialized<a name="line.96"></a>
-<span class="sourceLineNo">097</span> || !range.contains(rowArr, offset, length)) {<a name="line.97"></a>
-<span class="sourceLineNo">098</span> byte[] rowkey = CellUtil.cloneRow(firstRowCell);<a name="line.98"></a>
-<span class="sourceLineNo">099</span> index = getNextRangeIndex(rowkey);<a name="line.99"></a>
-<span class="sourceLineNo">100</span> if (index >= rangeList.size()) {<a name="line.100"></a>
-<span class="sourceLineNo">101</span> done = true;<a name="line.101"></a>
-<span class="sourceLineNo">102</span> currentReturnCode = ReturnCode.NEXT_ROW;<a name="line.102"></a>
-<span class="sourceLineNo">103</span> return false;<a name="line.103"></a>
-<span class="sourceLineNo">104</span> }<a name="line.104"></a>
-<span class="sourceLineNo">105</span> if(index != ROW_BEFORE_FIRST_RANGE) {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> range = rangeList.get(index);<a name="line.106"></a>
-<span class="sourceLineNo">107</span> } else {<a name="line.107"></a>
-<span class="sourceLineNo">108</span> range = rangeList.get(0);<a name="line.108"></a>
-<span class="sourceLineNo">109</span> }<a name="line.109"></a>
-<span class="sourceLineNo">110</span> if (EXCLUSIVE) {<a name="line.110"></a>
-<span class="sourceLineNo">111</span> EXCLUSIVE = false;<a name="line.111"></a>
-<span class="sourceLineNo">112</span> currentReturnCode = ReturnCode.NEXT_ROW;<a name="line.112"></a>
-<span class="sourceLineNo">113</span> return false;<a name="line.113"></a>
-<span class="sourceLineNo">114</span> }<a name="line.114"></a>
-<span class="sourceLineNo">115</span> if (!initialized) {<a name="line.115"></a>
-<span class="sourceLineNo">116</span> if(index != ROW_BEFORE_FIRST_RANGE) {<a name="line.116"></a>
-<span class="sourceLineNo">117</span> currentReturnCode = ReturnCode.INCLUDE;<a name="line.117"></a>
-<span class="sourceLineNo">118</span> } else {<a name="line.118"></a>
-<span class="sourceLineNo">119</span> currentReturnCode = ReturnCode.SEEK_NEXT_USING_HINT;<a name="line.119"></a>
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-<span class="sourceLineNo">121</span> initialized = true;<a name="line.121"></a>
-<span class="sourceLineNo">122</span> } else {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> if (range.contains(rowArr, offset, length)) {<a name="line.123"></a>
-<span class="sourceLineNo">124</span> currentReturnCode = ReturnCode.INCLUDE;<a name="line.124"></a>
-<span class="sourceLineNo">125</span> } else currentReturnCode = ReturnCode.SEEK_NEXT_USING_HINT;<a name="line.125"></a>
-<span class="sourceLineNo">126</span> }<a name="line.126"></a>
-<span class="sourceLineNo">127</span> } else {<a name="line.127"></a>
-<span class="sourceLineNo">128</span> currentReturnCode = ReturnCode.INCLUDE;<a name="line.128"></a>
-<span class="sourceLineNo">129</span> }<a name="line.129"></a>
-<span class="sourceLineNo">130</span> return false;<a name="line.130"></a>
-<span class="sourceLineNo">131</span> }<a name="line.131"></a>
-<span class="sourceLineNo">132</span><a name="line.132"></a>
-<span class="sourceLineNo">133</span> @Override<a name="line.133"></a>
-<span class="sourceLineNo">134</span> public ReturnCode filterKeyValue(Cell ignored) {<a name="line.134"></a>
-<span class="sourceLineNo">135</span> return currentReturnCode;<a name="line.135"></a>
-<span class="sourceLineNo">136</span> }<a name="line.136"></a>
-<span class="sourceLineNo">137</span><a name="line.137"></a>
-<span class="sourceLineNo">138</span> @Override<a name="line.138"></a>
-<span class="sourceLineNo">139</span> public Cell getNextCellHint(Cell currentKV) {<a name="line.139"></a>
-<span class="sourceLineNo">140</span> // skip to the next range's start row<a name="line.140"></a>
-<span class="sourceLineNo">141</span> return KeyValueUtil.createFirstOnRow(range.startRow);<a name="line.141"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.protobuf.generated.FilterProtos;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.util.ByteStringer;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.33"></a>
+<span class="sourceLineNo">034</span><a name="line.34"></a>
+<span class="sourceLineNo">035</span>import com.google.protobuf.InvalidProtocolBufferException;<a name="line.35"></a>
+<span class="sourceLineNo">036</span><a name="line.36"></a>
+<span class="sourceLineNo">037</span>/**<a name="line.37"></a>
+<span class="sourceLineNo">038</span> * Filter to support scan multiple row key ranges. It can construct the row key ranges from the<a name="line.38"></a>
+<span class="sourceLineNo">039</span> * passed list which can be accessed by each region server.<a name="line.39"></a>
+<span class="sourceLineNo">040</span> *<a name="line.40"></a>
+<span class="sourceLineNo">041</span> * HBase is quite efficient when scanning only one small row key range. If user needs to specify<a name="line.41"></a>
+<span class="sourceLineNo">042</span> * multiple row key ranges in one scan, the typical solutions are: 1. through FilterList which is a<a name="line.42"></a>
+<span class="sourceLineNo">043</span> * list of row key Filters, 2. using the SQL layer over HBase to join with two table, such as hive,<a name="line.43"></a>
+<span class="sourceLineNo">044</span> * phoenix etc. However, both solutions are inefficient. Both of them can't utilize the range info<a name="line.44"></a>
+<span class="sourceLineNo">045</span> * to perform fast forwarding during scan which is quite time consuming. If the number of ranges<a name="line.45"></a>
+<span class="sourceLineNo">046</span> * are quite big (e.g. millions), join is a proper solution though it is slow. However, there are<a name="line.46"></a>
+<span class="sourceLineNo">047</span> * cases that user wants to specify a small number of ranges to scan (e.g. &lt;1000 ranges). Both<a name="line.47"></a>
+<span class="sourceLineNo">048</span> * solutions can't provide satisfactory performance in such case. MultiRowRangeFilter is to support<a name="line.48"></a>
+<span class="sourceLineNo">049</span> * such usec ase (scan multiple row key ranges), which can construct the row key ranges from user<a name="line.49"></a>
+<span class="sourceLineNo">050</span> * specified list and perform fast-forwarding during scan. Thus, the scan will be quite efficient.<a name="line.50"></a>
+<span class="sourceLineNo">051</span> */<a name="line.51"></a>
+<span class="sourceLineNo">052</span>@InterfaceAudience.Public<a name="line.52"></a>
+<span class="sourceLineNo">053</span>@InterfaceStability.Evolving<a name="line.53"></a>
+<span class="sourceLineNo">054</span>public class MultiRowRangeFilter extends FilterBase {<a name="line.54"></a>
+<span class="sourceLineNo">055</span><a name="line.55"></a>
+<span class="sourceLineNo">056</span> private List<RowRange> rangeList;<a name="line.56"></a>
+<span class="sourceLineNo">057</span><a name="line.57"></a>
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+<span class="sourceLineNo">060</span> private boolean done = false;<a name="line.60"></a>
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+<span class="sourceLineNo">066</span> /**<a name="line.66"></a>
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+<span class="sourceLineNo">069</span> * throw an exception if the range list is not in an natural order or any<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * <code>RowRange</code> is invalid<a name="line.70"></a>
+<span class="sourceLineNo">071</span> */<a name="line.71"></a>
+<span class="sourceLineNo">072</span> public MultiRowRangeFilter(List<RowRange> list) throws IOException {<a name="line.72"></a>
+<span class="sourceLineNo">073</span> this.rangeList = sortAndMerge(list);<a name="line.73"></a>
+<span class="sourceLineNo">074</span> }<a name="line.74"></a>
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+<span class="sourceLineNo">080</span><a name="line.80"></a>
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+<span class="sourceLineNo">088</span> // If it is the first time of running, calculate the current range index for<a name="line.88"></a>
+<span class="sourceLineNo">089</span> // the row key. If index is out of bound which happens when the start row<a name="line.89"></a>
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+<span class="sourceLineNo">137</span> @Override<a name="line.137"></a>
+<span class="sourceLineNo">138</span> public Cell getNextCellHint(Cell currentKV) {<a name="line.138"></a>
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