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From git-site-r...@apache.org
Subject [13/51] [partial] hbase-site git commit: Published site at .
Date Fri, 15 Dec 2017 15:17:52 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/071f974b/devapidocs/src-html/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.WriteExampleCallable.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.WriteExampleCallable.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.WriteExampleCallable.html
index 0b8baa8..c77170b 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.WriteExampleCallable.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/example/MultiThreadedClientExample.WriteExampleCallable.html
@@ -30,308 +30,325 @@
 <span class="sourceLineNo">022</span>import org.apache.commons.logging.Log;<a name="line.22"></a>
 <span class="sourceLineNo">023</span>import org.apache.commons.logging.LogFactory;<a name="line.23"></a>
 <span class="sourceLineNo">024</span>import org.apache.hadoop.conf.Configured;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.TableName;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.Put;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.client.RegionLocator;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.client.Result;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.client.ResultScanner;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.client.Table;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.filter.KeyOnlyFilter;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.util.Tool;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.util.ToolRunner;<a name="line.37"></a>
-<span class="sourceLineNo">038</span><a name="line.38"></a>
-<span class="sourceLineNo">039</span>import java.io.IOException;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import java.util.ArrayList;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import java.util.List;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import java.util.concurrent.Callable;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import java.util.concurrent.ExecutorService;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import java.util.concurrent.Executors;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import java.util.concurrent.ForkJoinPool;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import java.util.concurrent.Future;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import java.util.concurrent.ThreadFactory;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import java.util.concurrent.TimeUnit;<a name="line.49"></a>
-<span class="sourceLineNo">050</span><a name="line.50"></a>
-<span class="sourceLineNo">051</span><a name="line.51"></a>
-<span class="sourceLineNo">052</span>/**<a name="line.52"></a>
-<span class="sourceLineNo">053</span> * Example on how to use HBase's {@link Connection} and {@link Table} in a<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * multi-threaded environment. Each table is a light weight object<a name="line.54"></a>
-<span class="sourceLineNo">055</span> * that is created and thrown away. Connections are heavy weight objects<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * that hold on to zookeeper connections, async processes, and other state.<a name="line.56"></a>
-<span class="sourceLineNo">057</span> *<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * &lt;pre&gt;<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * Usage:<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * bin/hbase org.apache.hadoop.hbase.client.example.MultiThreadedClientExample testTableName 500000<a name="line.60"></a>
-<span class="sourceLineNo">061</span> * &lt;/pre&gt;<a name="line.61"></a>
-<span class="sourceLineNo">062</span> *<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * &lt;p&gt;<a name="line.63"></a>
-<span class="sourceLineNo">064</span> * The table should already be created before running the command.<a name="line.64"></a>
-<span class="sourceLineNo">065</span> * This example expects one column family named d.<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * &lt;/p&gt;<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * &lt;p&gt;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> * This is meant to show different operations that are likely to be<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * done in a real world application. These operations are:<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * &lt;/p&gt;<a name="line.70"></a>
-<span class="sourceLineNo">071</span> *<a name="line.71"></a>
-<span class="sourceLineNo">072</span> * &lt;ul&gt;<a name="line.72"></a>
-<span class="sourceLineNo">073</span> *   &lt;li&gt;<a name="line.73"></a>
-<span class="sourceLineNo">074</span> *     30% of all operations performed are batch writes.<a name="line.74"></a>
-<span class="sourceLineNo">075</span> *     30 puts are created and sent out at a time.<a name="line.75"></a>
-<span class="sourceLineNo">076</span> *     The response for all puts is waited on.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> *   &lt;/li&gt;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> *   &lt;li&gt;<a name="line.78"></a>
-<span class="sourceLineNo">079</span> *     20% of all operations are single writes.<a name="line.79"></a>
-<span class="sourceLineNo">080</span> *     A single put is sent out and the response is waited for.<a name="line.80"></a>
-<span class="sourceLineNo">081</span> *   &lt;/li&gt;<a name="line.81"></a>
-<span class="sourceLineNo">082</span> *   &lt;li&gt;<a name="line.82"></a>
-<span class="sourceLineNo">083</span> *     50% of all operations are scans.<a name="line.83"></a>
-<span class="sourceLineNo">084</span> *     These scans start at a random place and scan up to 100 rows.<a name="line.84"></a>
-<span class="sourceLineNo">085</span> *   &lt;/li&gt;<a name="line.85"></a>
-<span class="sourceLineNo">086</span> * &lt;/ul&gt;<a name="line.86"></a>
-<span class="sourceLineNo">087</span> *<a name="line.87"></a>
-<span class="sourceLineNo">088</span> */<a name="line.88"></a>
-<span class="sourceLineNo">089</span>public class MultiThreadedClientExample extends Configured implements Tool {<a name="line.89"></a>
-<span class="sourceLineNo">090</span>  private static final Log LOG = LogFactory.getLog(MultiThreadedClientExample.class);<a name="line.90"></a>
-<span class="sourceLineNo">091</span>  private static final int DEFAULT_NUM_OPERATIONS = 500000;<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>  /**<a name="line.93"></a>
-<span class="sourceLineNo">094</span>   * The name of the column family.<a name="line.94"></a>
-<span class="sourceLineNo">095</span>   *<a name="line.95"></a>
-<span class="sourceLineNo">096</span>   * d for default.<a name="line.96"></a>
-<span class="sourceLineNo">097</span>   */<a name="line.97"></a>
-<span class="sourceLineNo">098</span>  private static final byte[] FAMILY = Bytes.toBytes("d");<a name="line.98"></a>
-<span class="sourceLineNo">099</span><a name="line.99"></a>
-<span class="sourceLineNo">100</span>  /**<a name="line.100"></a>
-<span class="sourceLineNo">101</span>   * For the example we're just using one qualifier.<a name="line.101"></a>
-<span class="sourceLineNo">102</span>   */<a name="line.102"></a>
-<span class="sourceLineNo">103</span>  private static final byte[] QUAL = Bytes.toBytes("test");<a name="line.103"></a>
-<span class="sourceLineNo">104</span><a name="line.104"></a>
-<span class="sourceLineNo">105</span>  private final ExecutorService internalPool;<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span>  private final int threads;<a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span>  public MultiThreadedClientExample() throws IOException {<a name="line.109"></a>
-<span class="sourceLineNo">110</span>    // Base number of threads.<a name="line.110"></a>
-<span class="sourceLineNo">111</span>    // This represents the number of threads you application has<a name="line.111"></a>
-<span class="sourceLineNo">112</span>    // that can be interacting with an hbase client.<a name="line.112"></a>
-<span class="sourceLineNo">113</span>    this.threads = Runtime.getRuntime().availableProcessors() * 4;<a name="line.113"></a>
-<span class="sourceLineNo">114</span><a name="line.114"></a>
-<span class="sourceLineNo">115</span>    // Daemon threads are great for things that get shut down.<a name="line.115"></a>
-<span class="sourceLineNo">116</span>    ThreadFactory threadFactory = new ThreadFactoryBuilder()<a name="line.116"></a>
-<span class="sourceLineNo">117</span>        .setDaemon(true).setNameFormat("internal-pol-%d").build();<a name="line.117"></a>
-<span class="sourceLineNo">118</span><a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span>    this.internalPool = Executors.newFixedThreadPool(threads, threadFactory);<a name="line.120"></a>
-<span class="sourceLineNo">121</span>  }<a name="line.121"></a>
+<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.CellBuilder;<a name="line.25"></a>
+<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.CellBuilderFactory;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.CellBuilderType;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.TableName;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.client.Connection;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.client.ConnectionFactory;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.client.Put;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.client.RegionLocator;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.client.Result;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.client.ResultScanner;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.client.Table;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.filter.KeyOnlyFilter;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.util.Tool;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.util.ToolRunner;<a name="line.40"></a>
+<span class="sourceLineNo">041</span><a name="line.41"></a>
+<span class="sourceLineNo">042</span>import java.io.IOException;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import java.util.ArrayList;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import java.util.List;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import java.util.concurrent.Callable;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import java.util.concurrent.ExecutorService;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import java.util.concurrent.Executors;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import java.util.concurrent.ForkJoinPool;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import java.util.concurrent.Future;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import java.util.concurrent.ThreadFactory;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import java.util.concurrent.TimeUnit;<a name="line.52"></a>
+<span class="sourceLineNo">053</span><a name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
+<span class="sourceLineNo">055</span>/**<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * Example on how to use HBase's {@link Connection} and {@link Table} in a<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * multi-threaded environment. Each table is a light weight object<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * that is created and thrown away. Connections are heavy weight objects<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * that hold on to zookeeper connections, async processes, and other state.<a name="line.59"></a>
+<span class="sourceLineNo">060</span> *<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * &lt;pre&gt;<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * Usage:<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * bin/hbase org.apache.hadoop.hbase.client.example.MultiThreadedClientExample testTableName 500000<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * &lt;/pre&gt;<a name="line.64"></a>
+<span class="sourceLineNo">065</span> *<a name="line.65"></a>
+<span class="sourceLineNo">066</span> * &lt;p&gt;<a name="line.66"></a>
+<span class="sourceLineNo">067</span> * The table should already be created before running the command.<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * This example expects one column family named d.<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * &lt;/p&gt;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * &lt;p&gt;<a name="line.70"></a>
+<span class="sourceLineNo">071</span> * This is meant to show different operations that are likely to be<a name="line.71"></a>
+<span class="sourceLineNo">072</span> * done in a real world application. These operations are:<a name="line.72"></a>
+<span class="sourceLineNo">073</span> * &lt;/p&gt;<a name="line.73"></a>
+<span class="sourceLineNo">074</span> *<a name="line.74"></a>
+<span class="sourceLineNo">075</span> * &lt;ul&gt;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> *   &lt;li&gt;<a name="line.76"></a>
+<span class="sourceLineNo">077</span> *     30% of all operations performed are batch writes.<a name="line.77"></a>
+<span class="sourceLineNo">078</span> *     30 puts are created and sent out at a time.<a name="line.78"></a>
+<span class="sourceLineNo">079</span> *     The response for all puts is waited on.<a name="line.79"></a>
+<span class="sourceLineNo">080</span> *   &lt;/li&gt;<a name="line.80"></a>
+<span class="sourceLineNo">081</span> *   &lt;li&gt;<a name="line.81"></a>
+<span class="sourceLineNo">082</span> *     20% of all operations are single writes.<a name="line.82"></a>
+<span class="sourceLineNo">083</span> *     A single put is sent out and the response is waited for.<a name="line.83"></a>
+<span class="sourceLineNo">084</span> *   &lt;/li&gt;<a name="line.84"></a>
+<span class="sourceLineNo">085</span> *   &lt;li&gt;<a name="line.85"></a>
+<span class="sourceLineNo">086</span> *     50% of all operations are scans.<a name="line.86"></a>
+<span class="sourceLineNo">087</span> *     These scans start at a random place and scan up to 100 rows.<a name="line.87"></a>
+<span class="sourceLineNo">088</span> *   &lt;/li&gt;<a name="line.88"></a>
+<span class="sourceLineNo">089</span> * &lt;/ul&gt;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> *<a name="line.90"></a>
+<span class="sourceLineNo">091</span> */<a name="line.91"></a>
+<span class="sourceLineNo">092</span>public class MultiThreadedClientExample extends Configured implements Tool {<a name="line.92"></a>
+<span class="sourceLineNo">093</span>  private static final Log LOG = LogFactory.getLog(MultiThreadedClientExample.class);<a name="line.93"></a>
+<span class="sourceLineNo">094</span>  private static final int DEFAULT_NUM_OPERATIONS = 500000;<a name="line.94"></a>
+<span class="sourceLineNo">095</span><a name="line.95"></a>
+<span class="sourceLineNo">096</span>  /**<a name="line.96"></a>
+<span class="sourceLineNo">097</span>   * The name of the column family.<a name="line.97"></a>
+<span class="sourceLineNo">098</span>   *<a name="line.98"></a>
+<span class="sourceLineNo">099</span>   * d for default.<a name="line.99"></a>
+<span class="sourceLineNo">100</span>   */<a name="line.100"></a>
+<span class="sourceLineNo">101</span>  private static final byte[] FAMILY = Bytes.toBytes("d");<a name="line.101"></a>
+<span class="sourceLineNo">102</span><a name="line.102"></a>
+<span class="sourceLineNo">103</span>  /**<a name="line.103"></a>
+<span class="sourceLineNo">104</span>   * For the example we're just using one qualifier.<a name="line.104"></a>
+<span class="sourceLineNo">105</span>   */<a name="line.105"></a>
+<span class="sourceLineNo">106</span>  private static final byte[] QUAL = Bytes.toBytes("test");<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span>  private final ExecutorService internalPool;<a name="line.108"></a>
+<span class="sourceLineNo">109</span><a name="line.109"></a>
+<span class="sourceLineNo">110</span>  private final int threads;<a name="line.110"></a>
+<span class="sourceLineNo">111</span><a name="line.111"></a>
+<span class="sourceLineNo">112</span>  public MultiThreadedClientExample() throws IOException {<a name="line.112"></a>
+<span class="sourceLineNo">113</span>    // Base number of threads.<a name="line.113"></a>
+<span class="sourceLineNo">114</span>    // This represents the number of threads you application has<a name="line.114"></a>
+<span class="sourceLineNo">115</span>    // that can be interacting with an hbase client.<a name="line.115"></a>
+<span class="sourceLineNo">116</span>    this.threads = Runtime.getRuntime().availableProcessors() * 4;<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span>    // Daemon threads are great for things that get shut down.<a name="line.118"></a>
+<span class="sourceLineNo">119</span>    ThreadFactory threadFactory = new ThreadFactoryBuilder()<a name="line.119"></a>
+<span class="sourceLineNo">120</span>        .setDaemon(true).setNameFormat("internal-pol-%d").build();<a name="line.120"></a>
+<span class="sourceLineNo">121</span><a name="line.121"></a>
 <span class="sourceLineNo">122</span><a name="line.122"></a>
-<span class="sourceLineNo">123</span>  @Override<a name="line.123"></a>
-<span class="sourceLineNo">124</span>  public int run(String[] args) throws Exception {<a name="line.124"></a>
+<span class="sourceLineNo">123</span>    this.internalPool = Executors.newFixedThreadPool(threads, threadFactory);<a name="line.123"></a>
+<span class="sourceLineNo">124</span>  }<a name="line.124"></a>
 <span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span>    if (args.length &lt; 1 || args.length &gt; 2) {<a name="line.126"></a>
-<span class="sourceLineNo">127</span>      System.out.println("Usage: " + this.getClass().getName() + " tableName [num_operations]");<a name="line.127"></a>
-<span class="sourceLineNo">128</span>      return -1;<a name="line.128"></a>
-<span class="sourceLineNo">129</span>    }<a name="line.129"></a>
-<span class="sourceLineNo">130</span><a name="line.130"></a>
-<span class="sourceLineNo">131</span>    final TableName tableName = TableName.valueOf(args[0]);<a name="line.131"></a>
-<span class="sourceLineNo">132</span>    int numOperations = DEFAULT_NUM_OPERATIONS;<a name="line.132"></a>
+<span class="sourceLineNo">126</span>  @Override<a name="line.126"></a>
+<span class="sourceLineNo">127</span>  public int run(String[] args) throws Exception {<a name="line.127"></a>
+<span class="sourceLineNo">128</span><a name="line.128"></a>
+<span class="sourceLineNo">129</span>    if (args.length &lt; 1 || args.length &gt; 2) {<a name="line.129"></a>
+<span class="sourceLineNo">130</span>      System.out.println("Usage: " + this.getClass().getName() + " tableName [num_operations]");<a name="line.130"></a>
+<span class="sourceLineNo">131</span>      return -1;<a name="line.131"></a>
+<span class="sourceLineNo">132</span>    }<a name="line.132"></a>
 <span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span>    // the second arg is the number of operations to send.<a name="line.134"></a>
-<span class="sourceLineNo">135</span>    if (args.length == 2) {<a name="line.135"></a>
-<span class="sourceLineNo">136</span>      numOperations = Integer.parseInt(args[1]);<a name="line.136"></a>
-<span class="sourceLineNo">137</span>    }<a name="line.137"></a>
-<span class="sourceLineNo">138</span><a name="line.138"></a>
-<span class="sourceLineNo">139</span>    // Threads for the client only.<a name="line.139"></a>
-<span class="sourceLineNo">140</span>    //<a name="line.140"></a>
-<span class="sourceLineNo">141</span>    // We don't want to mix hbase and business logic.<a name="line.141"></a>
-<span class="sourceLineNo">142</span>    //<a name="line.142"></a>
-<span class="sourceLineNo">143</span>    ExecutorService service = new ForkJoinPool(threads * 2);<a name="line.143"></a>
-<span class="sourceLineNo">144</span><a name="line.144"></a>
-<span class="sourceLineNo">145</span>    // Create two different connections showing how it's possible to<a name="line.145"></a>
-<span class="sourceLineNo">146</span>    // separate different types of requests onto different connections<a name="line.146"></a>
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+<span class="sourceLineNo">276</span>  /**<a name="line.276"></a>
+<span class="sourceLineNo">277</span>   * Class to show how to scan some rows starting at a random location.<a name="line.277"></a>
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-<span class="sourceLineNo">284</span>        // This is good for counting or other scans that are checking for<a name="line.284"></a>
-<span class="sourceLineNo">285</span>        // existence and don't rely on the value.<a name="line.285"></a>
-<span class="sourceLineNo">286</span>        s.setFilter(new KeyOnlyFilter());<a name="line.286"></a>
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 <span class="sourceLineNo">287</span><a name="line.287"></a>
-<span class="sourceLineNo">288</span>        // Don't go back to the server for every single row.<a name="line.288"></a>
-<span class="sourceLineNo">289</span>        // We know these rows are small. So ask for 20 at a time.<a name="line.289"></a>
-<span class="sourceLineNo">290</span>        // This would be application specific.<a name="line.290"></a>
-<span class="sourceLineNo">291</span>        //<a name="line.291"></a>
-<span class="sourceLineNo">292</span>        // The goal is to reduce round trips but asking for too<a name="line.292"></a>
-<span class="sourceLineNo">293</span>        // many rows can lead to GC problems on client and server sides.<a name="line.293"></a>
-<span class="sourceLineNo">294</span>        s.setCaching(20);<a name="line.294"></a>
-<span class="sourceLineNo">295</span><a name="line.295"></a>
-<span class="sourceLineNo">296</span>        // Don't use the cache. While this is a silly test program it's still good to be<a name="line.296"></a>
-<span class="sourceLineNo">297</span>        // explicit that scans normally don't use the block cache.<a name="line.297"></a>
-<span class="sourceLineNo">298</span>        s.setCacheBlocks(false);<a name="line.298"></a>
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+<span class="sourceLineNo">290</span><a name="line.290"></a>
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+<span class="sourceLineNo">294</span>      // Number of rows the scan will read before being considered done.<a name="line.294"></a>
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 <span class="sourceLineNo">299</span><a name="line.299"></a>
-<span class="sourceLineNo">300</span>        // Open up the scanner and close it automatically when done.<a name="line.300"></a>
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-<span class="sourceLineNo">302</span><a name="line.302"></a>
-<span class="sourceLineNo">303</span>          // Now go through rows.<a name="line.303"></a>
-<span class="sourceLineNo">304</span>          for (Result r : rs) {<a name="line.304"></a>
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-<span class="sourceLineNo">309</span>            // Most online applications won't be<a name="line.309"></a>
-<span class="sourceLineNo">310</span>            // reading the entire table so this break<a name="line.310"></a>
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-<span class="sourceLineNo">326</span>}<a name="line.326"></a>
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+<span class="sourceLineNo">301</span>        // This is good for counting or other scans that are checking for<a name="line.301"></a>
+<span class="sourceLineNo">302</span>        // existence and don't rely on the value.<a name="line.302"></a>
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+<span class="sourceLineNo">304</span><a name="line.304"></a>
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+<span class="sourceLineNo">308</span>        //<a name="line.308"></a>
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+<span class="sourceLineNo">312</span><a name="line.312"></a>
+<span class="sourceLineNo">313</span>        // Don't use the cache. While this is a silly test program it's still good to be<a name="line.313"></a>
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+<span class="sourceLineNo">327</span>            // reading the entire table so this break<a name="line.327"></a>
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+<span class="sourceLineNo">342</span>  }<a name="line.342"></a>
+<span class="sourceLineNo">343</span>}<a name="line.343"></a>
 
 
 


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