You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by mi...@apache.org on 2016/02/16 18:29:29 UTC
[26/37] hbase-site git commit: Published site at
7063562bf1c0bfcc5efa791b8536a298edab8fcb.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/6a178a98/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionStates.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionStates.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionStates.html
index 802b3d7..ff61e3e 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionStates.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/RegionStates.html
@@ -31,1101 +31,1127 @@
<span class="sourceLineNo">023</span>import java.util.HashMap;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.HashSet;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Iterator;<a name="line.25"></a>
-<span class="sourceLineNo">026</span>import java.util.List;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import java.util.Map;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import java.util.Set;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import java.util.TreeMap;<a name="line.29"></a>
-<span class="sourceLineNo">030</span><a name="line.30"></a>
-<span class="sourceLineNo">031</span>import com.google.common.annotations.VisibleForTesting;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import com.google.common.base.Preconditions;<a name="line.32"></a>
-<span class="sourceLineNo">033</span><a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.commons.logging.Log;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.commons.logging.LogFactory;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.hadoop.conf.Configuration;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.HConstants;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ServerLoad;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.ServerName;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.TableName;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.util.Pair;<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> * Region state accountant. It holds the states of all regions in the memory.<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * In normal scenario, it should match the meta table and the true region states.<a name="line.54"></a>
-<span class="sourceLineNo">055</span> *<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * This map is used by AssignmentManager to track region states.<a name="line.56"></a>
-<span class="sourceLineNo">057</span> */<a name="line.57"></a>
-<span class="sourceLineNo">058</span>@InterfaceAudience.Private<a name="line.58"></a>
-<span class="sourceLineNo">059</span>public class RegionStates {<a name="line.59"></a>
-<span class="sourceLineNo">060</span> private static final Log LOG = LogFactory.getLog(RegionStates.class);<a name="line.60"></a>
-<span class="sourceLineNo">061</span><a name="line.61"></a>
-<span class="sourceLineNo">062</span> /**<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * Regions currently in transition.<a name="line.63"></a>
-<span class="sourceLineNo">064</span> */<a name="line.64"></a>
-<span class="sourceLineNo">065</span> final HashMap<String, RegionState> regionsInTransition =<a name="line.65"></a>
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-<span class="sourceLineNo">068</span> /**<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * Region encoded name to state map.<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * All the regions should be in this map.<a name="line.70"></a>
-<span class="sourceLineNo">071</span> */<a name="line.71"></a>
-<span class="sourceLineNo">072</span> private final Map<String, RegionState> regionStates =<a name="line.72"></a>
-<span class="sourceLineNo">073</span> new HashMap<String, RegionState>();<a name="line.73"></a>
-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> /**<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * Holds mapping of table -> region state<a name="line.76"></a>
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-<span class="sourceLineNo">081</span> /**<a name="line.81"></a>
-<span class="sourceLineNo">082</span> * Server to regions assignment map.<a name="line.82"></a>
-<span class="sourceLineNo">083</span> * Contains the set of regions currently assigned to a given server.<a name="line.83"></a>
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-<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> * Maintains the mapping from the default region to the replica regions.<a name="line.89"></a>
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-<span class="sourceLineNo">093</span><a name="line.93"></a>
-<span class="sourceLineNo">094</span> /**<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * Region to server assignment map.<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * Contains the server a given region is currently assigned to.<a name="line.96"></a>
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-<span class="sourceLineNo">098</span> private final TreeMap<HRegionInfo, ServerName> regionAssignments =<a name="line.98"></a>
-<span class="sourceLineNo">099</span> new TreeMap<HRegionInfo, ServerName>();<a name="line.99"></a>
-<span class="sourceLineNo">100</span><a name="line.100"></a>
-<span class="sourceLineNo">101</span> /**<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * Encoded region name to server assignment map for re-assignment<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * purpose. Contains the server a given region is last known assigned<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * to, which has not completed log splitting, so not assignable.<a name="line.104"></a>
-<span class="sourceLineNo">105</span> * If a region is currently assigned, this server info in this<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * map should be the same as that in regionAssignments.<a name="line.106"></a>
-<span class="sourceLineNo">107</span> * However the info in regionAssignments is cleared when the region<a name="line.107"></a>
-<span class="sourceLineNo">108</span> * is offline while the info in lastAssignments is cleared when<a name="line.108"></a>
-<span class="sourceLineNo">109</span> * the region is closed or the server is dead and processed.<a name="line.109"></a>
-<span class="sourceLineNo">110</span> */<a name="line.110"></a>
-<span class="sourceLineNo">111</span> private final HashMap<String, ServerName> lastAssignments =<a name="line.111"></a>
-<span class="sourceLineNo">112</span> new HashMap<String, ServerName>();<a name="line.112"></a>
-<span class="sourceLineNo">113</span><a name="line.113"></a>
-<span class="sourceLineNo">114</span> /**<a name="line.114"></a>
-<span class="sourceLineNo">115</span> * Encoded region name to server assignment map for the<a name="line.115"></a>
-<span class="sourceLineNo">116</span> * purpose to clean up serverHoldings when a region is online<a name="line.116"></a>
-<span class="sourceLineNo">117</span> * on a new server. When the region is offline from the previous<a name="line.117"></a>
-<span class="sourceLineNo">118</span> * server, we cleaned up regionAssignments so that it has the<a name="line.118"></a>
-<span class="sourceLineNo">119</span> * latest assignment map. But we didn't clean up serverHoldings<a name="line.119"></a>
-<span class="sourceLineNo">120</span> * to match the meta. We need this map to find out the old server<a name="line.120"></a>
-<span class="sourceLineNo">121</span> * whose serverHoldings needs cleanup, given a moved region.<a name="line.121"></a>
-<span class="sourceLineNo">122</span> */<a name="line.122"></a>
-<span class="sourceLineNo">123</span> private final HashMap<String, ServerName> oldAssignments =<a name="line.123"></a>
-<span class="sourceLineNo">124</span> new HashMap<String, ServerName>();<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span> /**<a name="line.126"></a>
-<span class="sourceLineNo">127</span> * Map a host port pair string to the latest start code<a name="line.127"></a>
-<span class="sourceLineNo">128</span> * of a region server which is known to be dead. It is dead<a name="line.128"></a>
-<span class="sourceLineNo">129</span> * to us, but server manager may not know it yet.<a name="line.129"></a>
-<span class="sourceLineNo">130</span> */<a name="line.130"></a>
-<span class="sourceLineNo">131</span> private final HashMap<String, Long> deadServers =<a name="line.131"></a>
-<span class="sourceLineNo">132</span> new HashMap<String, Long>();<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> /**<a name="line.134"></a>
-<span class="sourceLineNo">135</span> * Map a dead servers to the time when log split is done.<a name="line.135"></a>
-<span class="sourceLineNo">136</span> * Since log splitting is not ordered, we have to remember<a name="line.136"></a>
-<span class="sourceLineNo">137</span> * all processed instances. The map is cleaned up based<a name="line.137"></a>
-<span class="sourceLineNo">138</span> * on a configured time. By default, we assume a dead<a name="line.138"></a>
-<span class="sourceLineNo">139</span> * server should be done with log splitting in two hours.<a name="line.139"></a>
-<span class="sourceLineNo">140</span> */<a name="line.140"></a>
-<span class="sourceLineNo">141</span> private final HashMap<ServerName, Long> processedServers =<a name="line.141"></a>
-<span class="sourceLineNo">142</span> new HashMap<ServerName, Long>();<a name="line.142"></a>
-<span class="sourceLineNo">143</span> private long lastProcessedServerCleanTime;<a name="line.143"></a>
-<span class="sourceLineNo">144</span><a name="line.144"></a>
-<span class="sourceLineNo">145</span> private final TableStateManager tableStateManager;<a name="line.145"></a>
-<span class="sourceLineNo">146</span> private final RegionStateStore regionStateStore;<a name="line.146"></a>
-<span class="sourceLineNo">147</span> private final ServerManager serverManager;<a name="line.147"></a>
-<span class="sourceLineNo">148</span> private final MasterServices server;<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
-<span class="sourceLineNo">150</span> // The maximum time to keep a log split info in region states map<a name="line.150"></a>
-<span class="sourceLineNo">151</span> static final String LOG_SPLIT_TIME = "hbase.master.maximum.logsplit.keeptime";<a name="line.151"></a>
-<span class="sourceLineNo">152</span> static final long DEFAULT_LOG_SPLIT_TIME = 7200000L; // 2 hours<a name="line.152"></a>
+<span class="sourceLineNo">026</span>import java.util.LinkedHashMap;<a name="line.26"></a>
+<span class="sourceLineNo">027</span>import java.util.LinkedList;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import java.util.List;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import java.util.Map;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import java.util.Set;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import java.util.Collections;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import java.util.Comparator;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import java.util.TreeMap;<a name="line.33"></a>
+<span class="sourceLineNo">034</span><a name="line.34"></a>
+<span class="sourceLineNo">035</span>import com.google.common.annotations.VisibleForTesting;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import com.google.common.base.Preconditions;<a name="line.36"></a>
+<span class="sourceLineNo">037</span><a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.commons.logging.Log;<a name="line.38"></a>
+<span class="sourceLineNo">039</span>import org.apache.commons.logging.LogFactory;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.conf.Configuration;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.HConstants;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HRegionInfo;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.HTableDescriptor;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.MetaTableAccessor;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.ServerLoad;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.ServerName;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.TableName;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.54"></a>
+<span class="sourceLineNo">055</span><a name="line.55"></a>
+<span class="sourceLineNo">056</span>/**<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * Region state accountant. It holds the states of all regions in the memory.<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * In normal scenario, it should match the meta table and the true region states.<a name="line.58"></a>
+<span class="sourceLineNo">059</span> *<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * This map is used by AssignmentManager to track region states.<a name="line.60"></a>
+<span class="sourceLineNo">061</span> */<a name="line.61"></a>
+<span class="sourceLineNo">062</span>@InterfaceAudience.Private<a name="line.62"></a>
+<span class="sourceLineNo">063</span>public class RegionStates {<a name="line.63"></a>
+<span class="sourceLineNo">064</span> private static final Log LOG = LogFactory.getLog(RegionStates.class);<a name="line.64"></a>
+<span class="sourceLineNo">065</span><a name="line.65"></a>
+<span class="sourceLineNo">066</span> /**<a name="line.66"></a>
+<span class="sourceLineNo">067</span> * Regions currently in transition.<a name="line.67"></a>
+<span class="sourceLineNo">068</span> */<a name="line.68"></a>
+<span class="sourceLineNo">069</span> final HashMap<String, RegionState> regionsInTransition =<a name="line.69"></a>
+<span class="sourceLineNo">070</span> new HashMap<String, RegionState>();<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span> /**<a name="line.72"></a>
+<span class="sourceLineNo">073</span> * Region encoded name to state map.<a name="line.73"></a>
+<span class="sourceLineNo">074</span> * All the regions should be in this map.<a name="line.74"></a>
+<span class="sourceLineNo">075</span> */<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private final Map<String, RegionState> regionStates =<a name="line.76"></a>
+<span class="sourceLineNo">077</span> new HashMap<String, RegionState>();<a name="line.77"></a>
+<span class="sourceLineNo">078</span><a name="line.78"></a>
+<span class="sourceLineNo">079</span> /**<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * Holds mapping of table -> region state<a name="line.80"></a>
+<span class="sourceLineNo">081</span> */<a name="line.81"></a>
+<span class="sourceLineNo">082</span> private final Map<TableName, Map<String, RegionState>> regionStatesTableIndex =<a name="line.82"></a>
+<span class="sourceLineNo">083</span> new HashMap<TableName, Map<String, RegionState>>();<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> * Server to regions assignment map.<a name="line.86"></a>
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+<span class="sourceLineNo">088</span> */<a name="line.88"></a>
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+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> /**<a name="line.92"></a>
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+<span class="sourceLineNo">097</span><a name="line.97"></a>
+<span class="sourceLineNo">098</span> /**<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * Region to server assignment map.<a name="line.99"></a>
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+<span class="sourceLineNo">101</span> */<a name="line.101"></a>
+<span class="sourceLineNo">102</span> private final TreeMap<HRegionInfo, ServerName> regionAssignments =<a name="line.102"></a>
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+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span> /**<a name="line.105"></a>
+<span class="sourceLineNo">106</span> * Encoded region name to server assignment map for re-assignment<a name="line.106"></a>
+<span class="sourceLineNo">107</span> * purpose. Contains the server a given region is last known assigned<a name="line.107"></a>
+<span class="sourceLineNo">108</span> * to, which has not completed log splitting, so not assignable.<a name="line.108"></a>
+<span class="sourceLineNo">109</span> * If a region is currently assigned, this server info in this<a name="line.109"></a>
+<span class="sourceLineNo">110</span> * map should be the same as that in regionAssignments.<a name="line.110"></a>
+<span class="sourceLineNo">111</span> * However the info in regionAssignments is cleared when the region<a name="line.111"></a>
+<span class="sourceLineNo">112</span> * is offline while the info in lastAssignments is cleared when<a name="line.112"></a>
+<span class="sourceLineNo">113</span> * the region is closed or the server is dead and processed.<a name="line.113"></a>
+<span class="sourceLineNo">114</span> */<a name="line.114"></a>
+<span class="sourceLineNo">115</span> private final HashMap<String, ServerName> lastAssignments =<a name="line.115"></a>
+<span class="sourceLineNo">116</span> new HashMap<String, ServerName>();<a name="line.116"></a>
+<span class="sourceLineNo">117</span><a name="line.117"></a>
+<span class="sourceLineNo">118</span> /**<a name="line.118"></a>
+<span class="sourceLineNo">119</span> * Encoded region name to server assignment map for the<a name="line.119"></a>
+<span class="sourceLineNo">120</span> * purpose to clean up serverHoldings when a region is online<a name="line.120"></a>
+<span class="sourceLineNo">121</span> * on a new server. When the region is offline from the previous<a name="line.121"></a>
+<span class="sourceLineNo">122</span> * server, we cleaned up regionAssignments so that it has the<a name="line.122"></a>
+<span class="sourceLineNo">123</span> * latest assignment map. But we didn't clean up serverHoldings<a name="line.123"></a>
+<span class="sourceLineNo">124</span> * to match the meta. We need this map to find out the old server<a name="line.124"></a>
+<span class="sourceLineNo">125</span> * whose serverHoldings needs cleanup, given a moved region.<a name="line.125"></a>
+<span class="sourceLineNo">126</span> */<a name="line.126"></a>
+<span class="sourceLineNo">127</span> private final HashMap<String, ServerName> oldAssignments =<a name="line.127"></a>
+<span class="sourceLineNo">128</span> new HashMap<String, ServerName>();<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>
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