http://git-wip-us.apache.org/repos/asf/hbase-site/blob/323b17d9/devapidocs/src-html/org/apache/hadoop/hbase/master/DeadServer.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/DeadServer.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/DeadServer.html index 905ad99..da85524 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/DeadServer.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/DeadServer.html @@ -33,198 +33,241 @@ <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.25"></a> <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.26"></a> <span class="sourceLineNo">027</span><a name="line.27"></a> -<span class="sourceLineNo">028</span>import java.util.ArrayList;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.util.Collections;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.Comparator;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.Date;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.util.HashMap;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.util.HashSet;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.util.Iterator;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import java.util.List;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import java.util.Map;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import java.util.Set;<a name="line.37"></a> -<span class="sourceLineNo">038</span><a name="line.38"></a> -<span class="sourceLineNo">039</span>/**<a name="line.39"></a> -<span class="sourceLineNo">040</span> * Class to hold dead servers list and utility querying dead server list.<a name="line.40"></a> -<span class="sourceLineNo">041</span> * On znode expiration, servers are added here.<a name="line.41"></a> -<span class="sourceLineNo">042</span> */<a name="line.42"></a> -<span class="sourceLineNo">043</span>@InterfaceAudience.Private<a name="line.43"></a> -<span class="sourceLineNo">044</span>public class DeadServer {<a name="line.44"></a> -<span class="sourceLineNo">045</span> private static final Logger LOG = LoggerFactory.getLogger(DeadServer.class);<a name="line.45"></a> -<span class="sourceLineNo">046</span><a name="line.46"></a> -<span class="sourceLineNo">047</span> /**<a name="line.47"></a> -<span class="sourceLineNo">048</span> * Set of known dead servers. On znode expiration, servers are added here.<a name="line.48"></a> -<span class="sourceLineNo">049</span> * This is needed in case of a network partitioning where the server's lease<a name="line.49"></a> -<span class="sourceLineNo">050</span> * expires, but the server is still running. After the network is healed,<a name="line.50"></a> -<span class="sourceLineNo">051</span> * and it's server logs are recovered, it will be told to call server startup<a name="line.51"></a> -<span class="sourceLineNo">052</span> * because by then, its regions have probably been reassigned.<a name="line.52"></a> -<span class="sourceLineNo">053</span> */<a name="line.53"></a> -<span class="sourceLineNo">054</span> private final Map<ServerName, Long> deadServers = new HashMap<>();<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> * Number of dead servers currently being processed<a name="line.57"></a> -<span class="sourceLineNo">058</span> */<a name="line.58"></a> -<span class="sourceLineNo">059</span> private int numProcessing = 0;<a name="line.59"></a> -<span class="sourceLineNo">060</span><a name="line.60"></a> -<span class="sourceLineNo">061</span> /**<a name="line.61"></a> -<span class="sourceLineNo">062</span> * Whether a dead server is being processed currently.<a name="line.62"></a> -<span class="sourceLineNo">063</span> */<a name="line.63"></a> -<span class="sourceLineNo">064</span> private volatile boolean processing = false;<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> * A dead server that comes back alive has a different start code. The new start code should be<a name="line.67"></a> -<span class="sourceLineNo">068</span> * greater than the old one, but we don't take this into account in this method.<a name="line.68"></a> -<span class="sourceLineNo">069</span> *<a name="line.69"></a> -<span class="sourceLineNo">070</span> * @param newServerName Servername as either <code>host:port</code> or<a name="line.70"></a> -<span class="sourceLineNo">071</span> * <code>host,port,startcode</code>.<a name="line.71"></a> -<span class="sourceLineNo">072</span> * @return true if this server was dead before and coming back alive again<a name="line.72"></a> -<span class="sourceLineNo">073</span> */<a name="line.73"></a> -<span class="sourceLineNo">074</span> public synchronized boolean cleanPreviousInstance(final ServerName newServerName) {<a name="line.74"></a> -<span class="sourceLineNo">075</span> Iterator<ServerName> it = deadServers.keySet().iterator();<a name="line.75"></a> -<span class="sourceLineNo">076</span> while (it.hasNext()) {<a name="line.76"></a> -<span class="sourceLineNo">077</span> ServerName sn = it.next();<a name="line.77"></a> -<span class="sourceLineNo">078</span> if (ServerName.isSameAddress(sn, newServerName)) {<a name="line.78"></a> -<span class="sourceLineNo">079</span> it.remove();<a name="line.79"></a> -<span class="sourceLineNo">080</span> return true;<a name="line.80"></a> -<span class="sourceLineNo">081</span> }<a name="line.81"></a> -<span class="sourceLineNo">082</span> }<a name="line.82"></a> -<span class="sourceLineNo">083</span><a name="line.83"></a> -<span class="sourceLineNo">084</span> return false;<a name="line.84"></a> -<span class="sourceLineNo">085</span> }<a name="line.85"></a> -<span class="sourceLineNo">086</span><a name="line.86"></a> -<span class="sourceLineNo">087</span> /**<a name="line.87"></a> -<span class="sourceLineNo">088</span> * @param serverName server name.<a name="line.88"></a> -<span class="sourceLineNo">089</span> * @return true if this server is on the dead servers list false otherwise<a name="line.89"></a> -<span class="sourceLineNo">090</span> */<a name="line.90"></a> -<span class="sourceLineNo">091</span> public synchronized boolean isDeadServer(final ServerName serverName) {<a name="line.91"></a> -<span class="sourceLineNo">092</span> return deadServers.containsKey(serverName);<a name="line.92"></a> -<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> /**<a name="line.95"></a> -<span class="sourceLineNo">096</span> * Checks if there are currently any dead servers being processed by the<a name="line.96"></a> -<span class="sourceLineNo">097</span> * master. Returns true if at least one region server is currently being<a name="line.97"></a> -<span class="sourceLineNo">098</span> * processed as dead.<a name="line.98"></a> -<span class="sourceLineNo">099</span> *<a name="line.99"></a> -<span class="sourceLineNo">100</span> * @return true if any RS are being processed as dead<a name="line.100"></a> -<span class="sourceLineNo">101</span> */<a name="line.101"></a> -<span class="sourceLineNo">102</span> public synchronized boolean areDeadServersInProgress() { return processing; }<a name="line.102"></a> -<span class="sourceLineNo">103</span><a name="line.103"></a> -<span class="sourceLineNo">104</span> public synchronized Set<ServerName> copyServerNames() {<a name="line.104"></a> -<span class="sourceLineNo">105</span> Set<ServerName> clone = new HashSet<>(deadServers.size());<a name="line.105"></a> -<span class="sourceLineNo">106</span> clone.addAll(deadServers.keySet());<a name="line.106"></a> -<span class="sourceLineNo">107</span> return clone;<a name="line.107"></a> -<span class="sourceLineNo">108</span> }<a name="line.108"></a> -<span class="sourceLineNo">109</span><a name="line.109"></a> -<span class="sourceLineNo">110</span> /**<a name="line.110"></a> -<span class="sourceLineNo">111</span> * Adds the server to the dead server list if it's not there already.<a name="line.111"></a> -<span class="sourceLineNo">112</span> * @param sn the server name<a name="line.112"></a> +<span class="sourceLineNo">028</span>import com.google.common.base.Preconditions;<a name="line.28"></a> +<span class="sourceLineNo">029</span><a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.ArrayList;<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.Date;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import java.util.HashMap;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import java.util.HashSet;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import java.util.Iterator;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import java.util.List;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import java.util.Map;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import java.util.Set;<a name="line.39"></a> +<span class="sourceLineNo">040</span><a name="line.40"></a> +<span class="sourceLineNo">041</span><a name="line.41"></a> +<span class="sourceLineNo">042</span>/**<a name="line.42"></a> +<span class="sourceLineNo">043</span> * Class to hold dead servers list and utility querying dead server list.<a name="line.43"></a> +<span class="sourceLineNo">044</span> * On znode expiration, servers are added here.<a name="line.44"></a> +<span class="sourceLineNo">045</span> */<a name="line.45"></a> +<span class="sourceLineNo">046</span>@InterfaceAudience.Private<a name="line.46"></a> +<span class="sourceLineNo">047</span>public class DeadServer {<a name="line.47"></a> +<span class="sourceLineNo">048</span> private static final Logger LOG = LoggerFactory.getLogger(DeadServer.class);<a name="line.48"></a> +<span class="sourceLineNo">049</span><a name="line.49"></a> +<span class="sourceLineNo">050</span> /**<a name="line.50"></a> +<span class="sourceLineNo">051</span> * Set of known dead servers. On znode expiration, servers are added here.<a name="line.51"></a> +<span class="sourceLineNo">052</span> * This is needed in case of a network partitioning where the server's lease<a name="line.52"></a> +<span class="sourceLineNo">053</span> * expires, but the server is still running. After the network is healed,<a name="line.53"></a> +<span class="sourceLineNo">054</span> * and it's server logs are recovered, it will be told to call server startup<a name="line.54"></a> +<span class="sourceLineNo">055</span> * because by then, its regions have probably been reassigned.<a name="line.55"></a> +<span class="sourceLineNo">056</span> */<a name="line.56"></a> +<span class="sourceLineNo">057</span> private final Map<ServerName, Long> deadServers = new HashMap<>();<a name="line.57"></a> +<span class="sourceLineNo">058</span><a name="line.58"></a> +<span class="sourceLineNo">059</span> /**<a name="line.59"></a> +<span class="sourceLineNo">060</span> * Set of dead servers currently being processed<a name="line.60"></a> +<span class="sourceLineNo">061</span> */<a name="line.61"></a> +<span class="sourceLineNo">062</span> private final Set<ServerName> processingServers = new HashSet<ServerName>();<a name="line.62"></a> +<span class="sourceLineNo">063</span><a name="line.63"></a> +<span class="sourceLineNo">064</span> /**<a name="line.64"></a> +<span class="sourceLineNo">065</span> * A dead server that comes back alive has a different start code. The new start code should be<a name="line.65"></a> +<span class="sourceLineNo">066</span> * greater than the old one, but we don't take this into account in this method.<a name="line.66"></a> +<span class="sourceLineNo">067</span> *<a name="line.67"></a> +<span class="sourceLineNo">068</span> * @param newServerName Servername as either <code>host:port</code> or<a name="line.68"></a> +<span class="sourceLineNo">069</span> * <code>host,port,startcode</code>.<a name="line.69"></a> +<span class="sourceLineNo">070</span> * @return true if this server was dead before and coming back alive again<a name="line.70"></a> +<span class="sourceLineNo">071</span> */<a name="line.71"></a> +<span class="sourceLineNo">072</span> public synchronized boolean cleanPreviousInstance(final ServerName newServerName) {<a name="line.72"></a> +<span class="sourceLineNo">073</span> Iterator<ServerName> it = deadServers.keySet().iterator();<a name="line.73"></a> +<span class="sourceLineNo">074</span> while (it.hasNext()) {<a name="line.74"></a> +<span class="sourceLineNo">075</span> ServerName sn = it.next();<a name="line.75"></a> +<span class="sourceLineNo">076</span> if (ServerName.isSameAddress(sn, newServerName)) {<a name="line.76"></a> +<span class="sourceLineNo">077</span> // remove from deadServers<a name="line.77"></a> +<span class="sourceLineNo">078</span> it.remove();<a name="line.78"></a> +<span class="sourceLineNo">079</span> // remove from processingServers<a name="line.79"></a> +<span class="sourceLineNo">080</span> boolean removed = processingServers.remove(sn);<a name="line.80"></a> +<span class="sourceLineNo">081</span> if (removed) {<a name="line.81"></a> +<span class="sourceLineNo">082</span> LOG.debug("Removed " + sn + " ; numProcessing=" + processingServers.size());<a name="line.82"></a> +<span class="sourceLineNo">083</span> }<a name="line.83"></a> +<span class="sourceLineNo">084</span> return true;<a name="line.84"></a> +<span class="sourceLineNo">085</span> }<a name="line.85"></a> +<span class="sourceLineNo">086</span> }<a name="line.86"></a> +<span class="sourceLineNo">087</span><a name="line.87"></a> +<span class="sourceLineNo">088</span> return false;<a name="line.88"></a> +<span class="sourceLineNo">089</span> }<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> * @param serverName server name.<a name="line.92"></a> +<span class="sourceLineNo">093</span> * @return true if this server is on the dead servers list false otherwise<a name="line.93"></a> +<span class="sourceLineNo">094</span> */<a name="line.94"></a> +<span class="sourceLineNo">095</span> public synchronized boolean isDeadServer(final ServerName serverName) {<a name="line.95"></a> +<span class="sourceLineNo">096</span> return deadServers.containsKey(serverName);<a name="line.96"></a> +<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> /**<a name="line.99"></a> +<span class="sourceLineNo">100</span> * @param serverName server name.<a name="line.100"></a> +<span class="sourceLineNo">101</span> * @return true if this server is on the processing servers list false otherwise<a name="line.101"></a> +<span class="sourceLineNo">102</span> */<a name="line.102"></a> +<span class="sourceLineNo">103</span> public synchronized boolean isProcessingServer(final ServerName serverName) {<a name="line.103"></a> +<span class="sourceLineNo">104</span> return processingServers.contains(serverName);<a name="line.104"></a> +<span class="sourceLineNo">105</span> }<a name="line.105"></a> +<span class="sourceLineNo">106</span><a name="line.106"></a> +<span class="sourceLineNo">107</span> /**<a name="line.107"></a> +<span class="sourceLineNo">108</span> * Checks if there are currently any dead servers being processed by the<a name="line.108"></a> +<span class="sourceLineNo">109</span> * master. Returns true if at least one region server is currently being<a name="line.109"></a> +<span class="sourceLineNo">110</span> * processed as dead.<a name="line.110"></a> +<span class="sourceLineNo">111</span> *<a name="line.111"></a> +<span class="sourceLineNo">112</span> * @return true if any RS are being processed as dead<a name="line.112"></a> <span class="sourceLineNo">113</span> */<a name="line.113"></a> -<span class="sourceLineNo">114</span> public synchronized void add(ServerName sn) {<a name="line.114"></a> -<span class="sourceLineNo">115</span> processing = true;<a name="line.115"></a> -<span class="sourceLineNo">116</span> if (!deadServers.containsKey(sn)){<a name="line.116"></a> -<span class="sourceLineNo">117</span> deadServers.put(sn, EnvironmentEdgeManager.currentTime());<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><a name="line.120"></a> -<span class="sourceLineNo">121</span> /**<a name="line.121"></a> -<span class="sourceLineNo">122</span> * Notify that we started processing this dead server.<a name="line.122"></a> -<span class="sourceLineNo">123</span> * @param sn ServerName for the dead server.<a name="line.123"></a> -<span class="sourceLineNo">124</span> */<a name="line.124"></a> -<span class="sourceLineNo">125</span> public synchronized void notifyServer(ServerName sn) {<a name="line.125"></a> -<span class="sourceLineNo">126</span> if (LOG.isTraceEnabled()) { LOG.trace("Started processing " + sn); }<a name="line.126"></a> -<span class="sourceLineNo">127</span> processing = true;<a name="line.127"></a> -<span class="sourceLineNo">128</span> numProcessing++;<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> public synchronized void finish(ServerName sn) {<a name="line.131"></a> -<span class="sourceLineNo">132</span> numProcessing--;<a name="line.132"></a> -<span class="sourceLineNo">133</span> if (LOG.isTraceEnabled()) LOG.trace("Finished " + sn + "; numProcessing=" + numProcessing);<a name="line.133"></a> -<span class="sourceLineNo">134</span><a name="line.134"></a> -<span class="sourceLineNo">135</span> assert numProcessing >= 0: "Number of dead servers in processing should always be non-negative";<a name="line.135"></a> -<span class="sourceLineNo">136</span><a name="line.136"></a> -<span class="sourceLineNo">137</span> if (numProcessing == 0) { processing = false; }<a name="line.137"></a> -<span class="sourceLineNo">138</span> }<a name="line.138"></a> -<span class="sourceLineNo">139</span><a name="line.139"></a> -<span class="sourceLineNo">140</span> public synchronized int size() {<a name="line.140"></a> -<span class="sourceLineNo">141</span> return deadServers.size();<a name="line.141"></a> -<span class="sourceLineNo">142</span> }<a name="line.142"></a> -<span class="sourceLineNo">143</span><a name="line.143"></a> -<span class="sourceLineNo">144</span> public synchronized boolean isEmpty() {<a name="line.144"></a> -<span class="sourceLineNo">145</span> return deadServers.isEmpty();<a name="line.145"></a> -<span class="sourceLineNo">146</span> }<a name="line.146"></a> -<span class="sourceLineNo">147</span><a name="line.147"></a> -<span class="sourceLineNo">148</span> public synchronized void cleanAllPreviousInstances(final ServerName newServerName) {<a name="line.148"></a> -<span class="sourceLineNo">149</span> Iterator<ServerName> it = deadServers.keySet().iterator();<a name="line.149"></a> -<span class="sourceLineNo">150</span> while (it.hasNext()) {<a name="line.150"></a> -<span class="sourceLineNo">151</span> ServerName sn = it.next();<a name="line.151"></a> -<span class="sourceLineNo">152</span> if (ServerName.isSameAddress(sn, newServerName)) {<a name="line.152"></a> -<span class="sourceLineNo">153</span> it.remove();<a name="line.153"></a> -<span class="sourceLineNo">154</span> }<a name="line.154"></a> -<span class="sourceLineNo">155</span> }<a name="line.155"></a> -<span class="sourceLineNo">156</span> }<a name="line.156"></a> -<span class="sourceLineNo">157</span><a name="line.157"></a> -<span class="sourceLineNo">158</span> @Override<a name="line.158"></a> -<span class="sourceLineNo">159</span> public synchronized String toString() {<a name="line.159"></a> -<span class="sourceLineNo">160</span> StringBuilder sb = new StringBuilder();<a name="line.160"></a> -<span class="sourceLineNo">161</span> for (ServerName sn : deadServers.keySet()) {<a name="line.161"></a> -<span class="sourceLineNo">162</span> if (sb.length() > 0) {<a name="line.162"></a> -<span class="sourceLineNo">163</span> sb.append(", ");<a name="line.163"></a> -<span class="sourceLineNo">164</span> }<a name="line.164"></a> -<span class="sourceLineNo">165</span> sb.append(sn.toString());<a name="line.165"></a> -<span class="sourceLineNo">166</span> }<a name="line.166"></a> -<span class="sourceLineNo">167</span> return sb.toString();<a name="line.167"></a> +<span class="sourceLineNo">114</span> public synchronized boolean areDeadServersInProgress() {<a name="line.114"></a> +<span class="sourceLineNo">115</span> return !processingServers.isEmpty();<a name="line.115"></a> +<span class="sourceLineNo">116</span> }<a name="line.116"></a> +<span class="sourceLineNo">117</span><a name="line.117"></a> +<span class="sourceLineNo">118</span> public synchronized Set<ServerName> copyServerNames() {<a name="line.118"></a> +<span class="sourceLineNo">119</span> Set<ServerName> clone = new HashSet<>(deadServers.size());<a name="line.119"></a> +<span class="sourceLineNo">120</span> clone.addAll(deadServers.keySet());<a name="line.120"></a> +<span class="sourceLineNo">121</span> return clone;<a name="line.121"></a> +<span class="sourceLineNo">122</span> }<a name="line.122"></a> +<span class="sourceLineNo">123</span><a name="line.123"></a> +<span class="sourceLineNo">124</span> /**<a name="line.124"></a> +<span class="sourceLineNo">125</span> * Adds the server to the dead server list if it's not there already.<a name="line.125"></a> +<span class="sourceLineNo">126</span> * @param sn the server name<a name="line.126"></a> +<span class="sourceLineNo">127</span> */<a name="line.127"></a> +<span class="sourceLineNo">128</span> public synchronized void add(ServerName sn) {<a name="line.128"></a> +<span class="sourceLineNo">129</span> if (!deadServers.containsKey(sn)){<a name="line.129"></a> +<span class="sourceLineNo">130</span> deadServers.put(sn, EnvironmentEdgeManager.currentTime());<a name="line.130"></a> +<span class="sourceLineNo">131</span> }<a name="line.131"></a> +<span class="sourceLineNo">132</span> boolean added = processingServers.add(sn);<a name="line.132"></a> +<span class="sourceLineNo">133</span> if (LOG.isDebugEnabled() && added) {<a name="line.133"></a> +<span class="sourceLineNo">134</span> LOG.debug("Added " + sn + "; numProcessing=" + processingServers.size());<a name="line.134"></a> +<span class="sourceLineNo">135</span> }<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> /**<a name="line.138"></a> +<span class="sourceLineNo">139</span> * Notify that we started processing this dead server.<a name="line.139"></a> +<span class="sourceLineNo">140</span> * @param sn ServerName for the dead server.<a name="line.140"></a> +<span class="sourceLineNo">141</span> */<a name="line.141"></a> +<span class="sourceLineNo">142</span> public synchronized void notifyServer(ServerName sn) {<a name="line.142"></a> +<span class="sourceLineNo">143</span> boolean added = processingServers.add(sn);<a name="line.143"></a> +<span class="sourceLineNo">144</span> if (LOG.isDebugEnabled()) {<a name="line.144"></a> +<span class="sourceLineNo">145</span> if (added) {<a name="line.145"></a> +<span class="sourceLineNo">146</span> LOG.debug("Added " + sn + "; numProcessing=" + processingServers.size());<a name="line.146"></a> +<span class="sourceLineNo">147</span> }<a name="line.147"></a> +<span class="sourceLineNo">148</span> LOG.debug("Started processing " + sn + "; numProcessing=" + processingServers.size());<a name="line.148"></a> +<span class="sourceLineNo">149</span> }<a name="line.149"></a> +<span class="sourceLineNo">150</span> }<a name="line.150"></a> +<span class="sourceLineNo">151</span><a name="line.151"></a> +<span class="sourceLineNo">152</span> /**<a name="line.152"></a> +<span class="sourceLineNo">153</span> * Complete processing for this dead server.<a name="line.153"></a> +<span class="sourceLineNo">154</span> * @param sn ServerName for the dead server.<a name="line.154"></a> +<span class="sourceLineNo">155</span> */<a name="line.155"></a> +<span class="sourceLineNo">156</span> public synchronized void finish(ServerName sn) {<a name="line.156"></a> +<span class="sourceLineNo">157</span> boolean removed = processingServers.remove(sn);<a name="line.157"></a> +<span class="sourceLineNo">158</span> if (LOG.isDebugEnabled()) {<a name="line.158"></a> +<span class="sourceLineNo">159</span> LOG.debug("Finished processing " + sn + "; numProcessing=" + processingServers.size());<a name="line.159"></a> +<span class="sourceLineNo">160</span> if (removed) {<a name="line.160"></a> +<span class="sourceLineNo">161</span> LOG.debug("Removed " + sn + " ; numProcessing=" + processingServers.size());<a name="line.161"></a> +<span class="sourceLineNo">162</span> }<a name="line.162"></a> +<span class="sourceLineNo">163</span> }<a name="line.163"></a> +<span class="sourceLineNo">164</span> }<a name="line.164"></a> +<span class="sourceLineNo">165</span><a name="line.165"></a> +<span class="sourceLineNo">166</span> public synchronized int size() {<a name="line.166"></a> +<span class="sourceLineNo">167</span> return deadServers.size();<a name="line.167"></a> <span class="sourceLineNo">168</span> }<a name="line.168"></a> <span class="sourceLineNo">169</span><a name="line.169"></a> -<span class="sourceLineNo">170</span> /**<a name="line.170"></a> -<span class="sourceLineNo">171</span> * Extract all the servers dead since a given time, and sort them.<a name="line.171"></a> -<span class="sourceLineNo">172</span> * @param ts the time, 0 for all<a name="line.172"></a> -<span class="sourceLineNo">173</span> * @return a sorted array list, by death time, lowest values first.<a name="line.173"></a> -<span class="sourceLineNo">174</span> */<a name="line.174"></a> -<span class="sourceLineNo">175</span> public synchronized List<Pair<ServerName, Long>> copyDeadServersSince(long ts){<a name="line.175"></a> -<span class="sourceLineNo">176</span> List<Pair<ServerName, Long>> res = new ArrayList<>(size());<a name="line.176"></a> -<span class="sourceLineNo">177</span><a 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died<a name="line.189"></a> -<span class="sourceLineNo">190</span> * @param deadServerName the dead server name<a name="line.190"></a> -<span class="sourceLineNo">191</span> * @return the date when the server died <a name="line.191"></a> -<span class="sourceLineNo">192</span> */<a name="line.192"></a> -<span class="sourceLineNo">193</span> public synchronized Date getTimeOfDeath(final ServerName deadServerName){<a name="line.193"></a> -<span class="sourceLineNo">194</span> Long time = deadServers.get(deadServerName);<a name="line.194"></a> -<span class="sourceLineNo">195</span> return time == null ? null : new Date(time);<a name="line.195"></a> -<span class="sourceLineNo">196</span> }<a name="line.196"></a> -<span class="sourceLineNo">197</span><a name="line.197"></a> -<span class="sourceLineNo">198</span> private static Comparator<Pair<ServerName, Long>> ServerNameDeathDateComparator =<a name="line.198"></a> -<span class="sourceLineNo">199</span> new Comparator<Pair<ServerName, Long>>(){<a name="line.199"></a> -<span class="sourceLineNo">200</span><a name="line.200"></a> -<span class="sourceLineNo">201</span> @Override<a name="line.201"></a> -<span class="sourceLineNo">202</span> public int compare(Pair<ServerName, Long> o1, Pair<ServerName, Long> o2) {<a name="line.202"></a> -<span class="sourceLineNo">203</span> return o1.getSecond().compareTo(o2.getSecond());<a name="line.203"></a> -<span class="sourceLineNo">204</span> }<a name="line.204"></a> -<span class="sourceLineNo">205</span> };<a name="line.205"></a> -<span class="sourceLineNo">206</span><a name="line.206"></a> -<span class="sourceLineNo">207</span> /**<a name="line.207"></a> -<span class="sourceLineNo">208</span> * remove the specified dead server<a name="line.208"></a> -<span class="sourceLineNo">209</span> * @param deadServerName the dead server name<a name="line.209"></a> -<span class="sourceLineNo">210</span> * @return true if this server was removed<a name="line.210"></a> -<span class="sourceLineNo">211</span> */<a name="line.211"></a> -<span class="sourceLineNo">212</span><a name="line.212"></a> -<span class="sourceLineNo">213</span> public synchronized boolean removeDeadServer(final ServerName deadServerName) {<a name="line.213"></a> -<span class="sourceLineNo">214</span> if (deadServers.remove(deadServerName) == null) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> return false;<a name="line.215"></a> -<span class="sourceLineNo">216</span> }<a name="line.216"></a> -<span class="sourceLineNo">217</span> return true;<a name="line.217"></a> -<span class="sourceLineNo">218</span> }<a name="line.218"></a> -<span class="sourceLineNo">219</span>}<a name="line.219"></a> +<span class="sourceLineNo">170</span> public synchronized boolean isEmpty() {<a name="line.170"></a> +<span class="sourceLineNo">171</span> return deadServers.isEmpty();<a name="line.171"></a> +<span class="sourceLineNo">172</span> }<a name="line.172"></a> +<span class="sourceLineNo">173</span><a name="line.173"></a> +<span class="sourceLineNo">174</span> public synchronized void cleanAllPreviousInstances(final ServerName newServerName) {<a name="line.174"></a> +<span class="sourceLineNo">175</span> Iterator<ServerName> it = deadServers.keySet().iterator();<a name="line.175"></a> +<span class="sourceLineNo">176</span> while (it.hasNext()) {<a name="line.176"></a> +<span class="sourceLineNo">177</span> ServerName sn = it.next();<a name="line.177"></a> +<span class="sourceLineNo">178</span> if (ServerName.isSameAddress(sn, newServerName)) {<a name="line.178"></a> +<span class="sourceLineNo">179</span> // remove from deadServers<a name="line.179"></a> +<span class="sourceLineNo">180</span> it.remove();<a name="line.180"></a> +<span class="sourceLineNo">181</span> // remove from processingServers<a name="line.181"></a> +<span class="sourceLineNo">182</span> boolean removed = processingServers.remove(sn);<a name="line.182"></a> +<span class="sourceLineNo">183</span> if (removed) {<a name="line.183"></a> +<span class="sourceLineNo">184</span> LOG.debug("Removed " + sn + " ; numProcessing=" + processingServers.size());<a name="line.184"></a> +<span class="sourceLineNo">185</span> }<a name="line.185"></a> +<span class="sourceLineNo">186</span> }<a name="line.186"></a> +<span class="sourceLineNo">187</span> }<a name="line.187"></a> +<span class="sourceLineNo">188</span> }<a name="line.188"></a> +<span class="sourceLineNo">189</span><a name="line.189"></a> +<span class="sourceLineNo">190</span> @Override<a name="line.190"></a> +<span class="sourceLineNo">191</span> public synchronized String toString() {<a name="line.191"></a> +<span class="sourceLineNo">192</span> // Display unified set of servers from both maps<a name="line.192"></a> +<span class="sourceLineNo">193</span> Set<ServerName> servers = new HashSet<ServerName>();<a name="line.193"></a> +<span class="sourceLineNo">194</span> servers.addAll(deadServers.keySet());<a name="line.194"></a> +<span class="sourceLineNo">195</span> servers.addAll(processingServers);<a name="line.195"></a> +<span class="sourceLineNo">196</span> StringBuilder sb = new StringBuilder();<a name="line.196"></a> +<span class="sourceLineNo">197</span> for (ServerName sn : servers) {<a name="line.197"></a> +<span class="sourceLineNo">198</span> if (sb.length() > 0) {<a name="line.198"></a> +<span class="sourceLineNo">199</span> sb.append(", ");<a name="line.199"></a> +<span class="sourceLineNo">200</span> }<a name="line.200"></a> +<span class="sourceLineNo">201</span> sb.append(sn.toString());<a name="line.201"></a> +<span class="sourceLineNo">202</span> // Star entries that are being processed<a name="line.202"></a> +<span class="sourceLineNo">203</span> if (processingServers.contains(sn)) {<a name="line.203"></a> +<span class="sourceLineNo">204</span> sb.append("*");<a name="line.204"></a> +<span class="sourceLineNo">205</span> }<a name="line.205"></a> +<span class="sourceLineNo">206</span> }<a name="line.206"></a> +<span class="sourceLineNo">207</span> return sb.toString();<a name="line.207"></a> +<span class="sourceLineNo">208</span> }<a name="line.208"></a> +<span class="sourceLineNo">209</span><a name="line.209"></a> +<span class="sourceLineNo">210</span> /**<a name="line.210"></a> +<span class="sourceLineNo">211</span> * Extract all the servers dead since a given time, and sort them.<a name="line.211"></a> +<span class="sourceLineNo">212</span> * @param ts the time, 0 for all<a name="line.212"></a> +<span class="sourceLineNo">213</span> * @return a sorted array list, by death time, lowest values first.<a name="line.213"></a> +<span class="sourceLineNo">214</span> */<a name="line.214"></a> +<span class="sourceLineNo">215</span> public synchronized List<Pair<ServerName, Long>> copyDeadServersSince(long ts){<a name="line.215"></a> +<span class="sourceLineNo">216</span> List<Pair<ServerName, Long>> res = new ArrayList<>(size());<a name="line.216"></a> +<span class="sourceLineNo">217</span><a name="line.217"></a> +<span class="sourceLineNo">218</span> for (Map.Entry<ServerName, Long> entry:deadServers.entrySet()){<a name="line.218"></a> +<span class="sourceLineNo">219</span> if (entry.getValue() >= ts){<a name="line.219"></a> +<span class="sourceLineNo">220</span> res.add(new Pair<>(entry.getKey(), entry.getValue()));<a name="line.220"></a> +<span class="sourceLineNo">221</span> }<a name="line.221"></a> +<span class="sourceLineNo">222</span> }<a name="line.222"></a> +<span class="sourceLineNo">223</span><a name="line.223"></a> +<span class="sourceLineNo">224</span> Collections.sort(res, ServerNameDeathDateComparator);<a name="line.224"></a> +<span class="sourceLineNo">225</span> return res;<a name="line.225"></a> +<span class="sourceLineNo">226</span> }<a name="line.226"></a> +<span class="sourceLineNo">227</span> <a name="line.227"></a> +<span class="sourceLineNo">228</span> /**<a name="line.228"></a> +<span class="sourceLineNo">229</span> * Get the time when a server died<a name="line.229"></a> +<span class="sourceLineNo">230</span> * @param deadServerName the dead server name<a name="line.230"></a> +<span class="sourceLineNo">231</span> * @return the date when the server died <a name="line.231"></a> +<span class="sourceLineNo">232</span> */<a name="line.232"></a> +<span class="sourceLineNo">233</span> public synchronized Date getTimeOfDeath(final ServerName deadServerName){<a name="line.233"></a> +<span class="sourceLineNo">234</span> Long time = deadServers.get(deadServerName);<a name="line.234"></a> +<span class="sourceLineNo">235</span> return time == null ? null : new Date(time);<a name="line.235"></a> +<span class="sourceLineNo">236</span> }<a name="line.236"></a> +<span class="sourceLineNo">237</span><a name="line.237"></a> +<span class="sourceLineNo">238</span> private static Comparator<Pair<ServerName, Long>> ServerNameDeathDateComparator =<a name="line.238"></a> +<span class="sourceLineNo">239</span> new Comparator<Pair<ServerName, Long>>(){<a name="line.239"></a> +<span class="sourceLineNo">240</span><a name="line.240"></a> +<span class="sourceLineNo">241</span> @Override<a name="line.241"></a> +<span class="sourceLineNo">242</span> public int compare(Pair<ServerName, Long> o1, Pair<ServerName, Long> o2) {<a name="line.242"></a> +<span class="sourceLineNo">243</span> return o1.getSecond().compareTo(o2.getSecond());<a name="line.243"></a> +<span class="sourceLineNo">244</span> }<a name="line.244"></a> +<span class="sourceLineNo">245</span> };<a name="line.245"></a> +<span class="sourceLineNo">246</span><a name="line.246"></a> +<span class="sourceLineNo">247</span> /**<a name="line.247"></a> +<span class="sourceLineNo">248</span> * remove the specified dead server<a name="line.248"></a> +<span class="sourceLineNo">249</span> * @param deadServerName the dead server name<a name="line.249"></a> +<span class="sourceLineNo">250</span> * @return true if this server was removed<a name="line.250"></a> +<span class="sourceLineNo">251</span> */<a name="line.251"></a> +<span class="sourceLineNo">252</span><a name="line.252"></a> +<span class="sourceLineNo">253</span> public synchronized boolean removeDeadServer(final ServerName deadServerName) {<a name="line.253"></a> +<span class="sourceLineNo">254</span> Preconditions.checkState(!processingServers.contains(deadServerName),<a name="line.254"></a> +<span class="sourceLineNo">255</span> "Asked to remove server still in processingServers set " + deadServerName +<a name="line.255"></a> +<span class="sourceLineNo">256</span> " (numProcessing=" + processingServers.size() + ")");<a name="line.256"></a> +<span class="sourceLineNo">257</span> if (deadServers.remove(deadServerName) == null) {<a name="line.257"></a> +<span class="sourceLineNo">258</span> return false;<a name="line.258"></a> +<span class="sourceLineNo">259</span> }<a name="line.259"></a> +<span class="sourceLineNo">260</span> return true;<a name="line.260"></a> +<span class="sourceLineNo">261</span> }<a name="line.261"></a> +<span class="sourceLineNo">262</span>}<a name="line.262"></a>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/323b17d9/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManagerUtil.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManagerUtil.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManagerUtil.html index 1ccb0e1..703da4f 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManagerUtil.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManagerUtil.html @@ -148,82 +148,103 @@ <span class="sourceLineNo">140</span> return procs;<a name="line.140"></a> <span class="sourceLineNo">141</span> }<a name="line.141"></a> <span class="sourceLineNo">142</span><a name="line.142"></a> -<span class="sourceLineNo">143</span> private static TransitRegionStateProcedure[] createAssignProcedures(MasterProcedureEnv env,<a name="line.143"></a> -<span class="sourceLineNo">144</span> List<RegionInfo> regions, int regionReplication, ServerName targetServer) {<a name="line.144"></a> -<span class="sourceLineNo">145</span> // create the assign procs only for the primary region using the targetServer<a name="line.145"></a> -<span class="sourceLineNo">146</span> TransitRegionStateProcedure[] primaryRegionProcs = regions.stream()<a name="line.146"></a> -<span class="sourceLineNo">147</span> .map(env.getAssignmentManager().getRegionStates()::getOrCreateRegionStateNode)<a name="line.147"></a> -<span class="sourceLineNo">148</span> .map(regionNode -> {<a name="line.148"></a> -<span class="sourceLineNo">149</span> TransitRegionStateProcedure proc =<a name="line.149"></a> -<span class="sourceLineNo">150</span> TransitRegionStateProcedure.assign(env, regionNode.getRegionInfo(), targetServer);<a name="line.150"></a> -<span class="sourceLineNo">151</span> regionNode.lock();<a name="line.151"></a> -<span class="sourceLineNo">152</span> try {<a name="line.152"></a> -<span class="sourceLineNo">153</span> // should never fail, as we have the exclusive region lock, and the region is newly<a name="line.153"></a> -<span class="sourceLineNo">154</span> // created, or has been successfully closed so should not be on any servers, so SCP will<a name="line.154"></a> -<span class="sourceLineNo">155</span> // not process it either.<a name="line.155"></a> -<span class="sourceLineNo">156</span> assert !regionNode.isInTransition();<a name="line.156"></a> -<span class="sourceLineNo">157</span> regionNode.setProcedure(proc);<a name="line.157"></a> -<span class="sourceLineNo">158</span> } finally {<a name="line.158"></a> -<span class="sourceLineNo">159</span> regionNode.unlock();<a name="line.159"></a> -<span class="sourceLineNo">160</span> }<a name="line.160"></a> -<span class="sourceLineNo">161</span> return proc;<a name="line.161"></a> -<span class="sourceLineNo">162</span> }).toArray(TransitRegionStateProcedure[]::new);<a name="line.162"></a> -<span class="sourceLineNo">163</span> if (regionReplication == DEFAULT_REGION_REPLICA) {<a name="line.163"></a> -<span class="sourceLineNo">164</span> // this is the default case<a name="line.164"></a> -<span class="sourceLineNo">165</span> return primaryRegionProcs;<a name="line.165"></a> -<span class="sourceLineNo">166</span> }<a name="line.166"></a> -<span class="sourceLineNo">167</span> // collect the replica region infos<a name="line.167"></a> -<span class="sourceLineNo">168</span> List<RegionInfo> replicaRegionInfos =<a name="line.168"></a> -<span class="sourceLineNo">169</span> new ArrayList<RegionInfo>(regions.size() * (regionReplication - 1));<a name="line.169"></a> -<span class="sourceLineNo">170</span> for (RegionInfo hri : regions) {<a name="line.170"></a> -<span class="sourceLineNo">171</span> // start the index from 1<a name="line.171"></a> -<span class="sourceLineNo">172</span> for (int i = 1; i < regionReplication; i++) {<a name="line.172"></a> -<span class="sourceLineNo">173</span> replicaRegionInfos.add(RegionReplicaUtil.getRegionInfoForReplica(hri, i));<a name="line.173"></a> -<span class="sourceLineNo">174</span> }<a name="line.174"></a> -<span class="sourceLineNo">175</span> }<a name="line.175"></a> -<span class="sourceLineNo">176</span> // create round robin procs. Note that we exclude the primary region's target server<a name="line.176"></a> -<span class="sourceLineNo">177</span> TransitRegionStateProcedure[] replicaRegionAssignProcs =<a name="line.177"></a> -<span class="sourceLineNo">178</span> env.getAssignmentManager().createRoundRobinAssignProcedures(replicaRegionInfos,<a name="line.178"></a> -<span class="sourceLineNo">179</span> Collections.singletonList(targetServer));<a name="line.179"></a> -<span class="sourceLineNo">180</span> // combine both the procs and return the result<a name="line.180"></a> -<span class="sourceLineNo">181</span> return ArrayUtils.addAll(primaryRegionProcs, replicaRegionAssignProcs);<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span><a name="line.183"></a> -<span class="sourceLineNo">184</span> static TransitRegionStateProcedure[] createAssignProceduresForOpeningNewRegions(<a name="line.184"></a> -<span class="sourceLineNo">185</span> MasterProcedureEnv env, List<RegionInfo> regions, int regionReplication,<a name="line.185"></a> -<span class="sourceLineNo">186</span> ServerName targetServer) {<a name="line.186"></a> -<span class="sourceLineNo">187</span> return createAssignProcedures(env, regions, regionReplication, targetServer);<a name="line.187"></a> -<span class="sourceLineNo">188</span> }<a name="line.188"></a> -<span class="sourceLineNo">189</span><a name="line.189"></a> -<span class="sourceLineNo">190</span> static void reopenRegionsForRollback(MasterProcedureEnv env, List<RegionInfo> regions,<a name="line.190"></a> -<span class="sourceLineNo">191</span> int regionReplication, ServerName targetServer) {<a name="line.191"></a> -<span class="sourceLineNo">192</span> TransitRegionStateProcedure[] procs =<a name="line.192"></a> -<span class="sourceLineNo">193</span> createAssignProcedures(env, regions, regionReplication, targetServer);<a name="line.193"></a> -<span class="sourceLineNo">194</span> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<a name="line.194"></a> -<span class="sourceLineNo">195</span> }<a name="line.195"></a> -<span class="sourceLineNo">196</span><a name="line.196"></a> -<span class="sourceLineNo">197</span> static void removeNonDefaultReplicas(MasterProcedureEnv env, Stream<RegionInfo> regions,<a name="line.197"></a> -<span class="sourceLineNo">198</span> int regionReplication) {<a name="line.198"></a> -<span class="sourceLineNo">199</span> // Remove from in-memory states<a name="line.199"></a> -<span class="sourceLineNo">200</span> regions.flatMap(hri -> IntStream.range(1, regionReplication)<a name="line.200"></a> -<span class="sourceLineNo">201</span> .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(hri, i))).forEach(hri -> {<a name="line.201"></a> -<span class="sourceLineNo">202</span> env.getAssignmentManager().getRegionStates().deleteRegion(hri);<a name="line.202"></a> -<span class="sourceLineNo">203</span> env.getMasterServices().getServerManager().removeRegion(hri);<a name="line.203"></a> -<span class="sourceLineNo">204</span> FavoredNodesManager fnm = env.getMasterServices().getFavoredNodesManager();<a name="line.204"></a> -<span class="sourceLineNo">205</span> if (fnm != null) {<a name="line.205"></a> -<span class="sourceLineNo">206</span> fnm.deleteFavoredNodesForRegions(Collections.singletonList(hri));<a name="line.206"></a> -<span class="sourceLineNo">207</span> }<a name="line.207"></a> -<span class="sourceLineNo">208</span> });<a name="line.208"></a> -<span class="sourceLineNo">209</span> }<a name="line.209"></a> -<span class="sourceLineNo">210</span><a name="line.210"></a> -<span class="sourceLineNo">211</span> static void checkClosedRegion(MasterProcedureEnv env, RegionInfo regionInfo) throws IOException {<a name="line.211"></a> -<span class="sourceLineNo">212</span> if (WALSplitter.hasRecoveredEdits(env.getMasterServices().getFileSystem(),<a name="line.212"></a> -<span class="sourceLineNo">213</span> env.getMasterConfiguration(), regionInfo)) {<a name="line.213"></a> -<span class="sourceLineNo">214</span> throw new IOException("Recovered.edits are found in Region: " + regionInfo +<a name="line.214"></a> -<span class="sourceLineNo">215</span> ", abort split/merge to prevent data loss");<a name="line.215"></a> -<span class="sourceLineNo">216</span> }<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span>}<a name="line.218"></a> +<span class="sourceLineNo">143</span> /**<a name="line.143"></a> +<span class="sourceLineNo">144</span> * Create assign procedures for the give regions, according to the {@code regionReplication}.<a name="line.144"></a> +<span class="sourceLineNo">145</span> * <p/><a name="line.145"></a> +<span class="sourceLineNo">146</span> * For rolling back, we will submit procedures directly to the {@code ProcedureExecutor}, so it is<a name="line.146"></a> +<span class="sourceLineNo">147</span> * possible that we persist the newly scheduled procedures, and then crash before persisting the<a name="line.147"></a> +<span class="sourceLineNo">148</span> * rollback state, so when we arrive here the second time, it is possible that some regions have<a name="line.148"></a> +<span class="sourceLineNo">149</span> * already been associated with a TRSP.<a name="line.149"></a> +<span class="sourceLineNo">150</span> * @param ignoreIfInTransition if true, will skip creating TRSP for the given region if it is<a name="line.150"></a> +<span class="sourceLineNo">151</span> * already in transition, otherwise we will add an assert that it should not in<a name="line.151"></a> +<span class="sourceLineNo">152</span> * transition.<a name="line.152"></a> +<span class="sourceLineNo">153</span> */<a name="line.153"></a> +<span class="sourceLineNo">154</span> private static TransitRegionStateProcedure[] createAssignProcedures(MasterProcedureEnv env,<a name="line.154"></a> +<span class="sourceLineNo">155</span> List<RegionInfo> regions, int regionReplication, ServerName targetServer,<a name="line.155"></a> +<span class="sourceLineNo">156</span> boolean ignoreIfInTransition) {<a name="line.156"></a> +<span class="sourceLineNo">157</span> // create the assign procs only for the primary region using the targetServer<a name="line.157"></a> +<span class="sourceLineNo">158</span> TransitRegionStateProcedure[] primaryRegionProcs =<a name="line.158"></a> +<span class="sourceLineNo">159</span> regions.stream().map(env.getAssignmentManager().getRegionStates()::getOrCreateRegionStateNode)<a name="line.159"></a> +<span class="sourceLineNo">160</span> .map(regionNode -> {<a name="line.160"></a> +<span class="sourceLineNo">161</span> TransitRegionStateProcedure proc =<a name="line.161"></a> +<span class="sourceLineNo">162</span> TransitRegionStateProcedure.assign(env, regionNode.getRegionInfo(), targetServer);<a name="line.162"></a> +<span class="sourceLineNo">163</span> regionNode.lock();<a name="line.163"></a> +<span class="sourceLineNo">164</span> try {<a name="line.164"></a> +<span class="sourceLineNo">165</span> if (ignoreIfInTransition) {<a name="line.165"></a> +<span class="sourceLineNo">166</span> if (regionNode.isInTransition()) {<a name="line.166"></a> +<span class="sourceLineNo">167</span> return null;<a name="line.167"></a> +<span class="sourceLineNo">168</span> }<a name="line.168"></a> +<span class="sourceLineNo">169</span> } else {<a name="line.169"></a> +<span class="sourceLineNo">170</span> // should never fail, as we have the exclusive region lock, and the region is newly<a name="line.170"></a> +<span class="sourceLineNo">171</span> // created, or has been successfully closed so should not be on any servers, so SCP<a name="line.171"></a> +<span class="sourceLineNo">172</span> // will<a name="line.172"></a> +<span class="sourceLineNo">173</span> // not process it either.<a name="line.173"></a> +<span class="sourceLineNo">174</span> assert !regionNode.isInTransition();<a name="line.174"></a> +<span class="sourceLineNo">175</span> }<a name="line.175"></a> +<span class="sourceLineNo">176</span> regionNode.setProcedure(proc);<a name="line.176"></a> +<span class="sourceLineNo">177</span> } finally {<a name="line.177"></a> +<span class="sourceLineNo">178</span> regionNode.unlock();<a name="line.178"></a> +<span class="sourceLineNo">179</span> }<a name="line.179"></a> +<span class="sourceLineNo">180</span> return proc;<a name="line.180"></a> +<span class="sourceLineNo">181</span> }).filter(p -> p != null).toArray(TransitRegionStateProcedure[]::new);<a name="line.181"></a> +<span class="sourceLineNo">182</span> if (regionReplication == DEFAULT_REGION_REPLICA) {<a name="line.182"></a> +<span class="sourceLineNo">183</span> // this is the default case<a name="line.183"></a> +<span class="sourceLineNo">184</span> return primaryRegionProcs;<a name="line.184"></a> +<span class="sourceLineNo">185</span> }<a name="line.185"></a> +<span class="sourceLineNo">186</span> // collect the replica region infos<a name="line.186"></a> +<span class="sourceLineNo">187</span> List<RegionInfo> replicaRegionInfos =<a name="line.187"></a> +<span class="sourceLineNo">188</span> new ArrayList<RegionInfo>(regions.size() * (regionReplication - 1));<a name="line.188"></a> +<span class="sourceLineNo">189</span> for (RegionInfo hri : regions) {<a name="line.189"></a> +<span class="sourceLineNo">190</span> // start the index from 1<a name="line.190"></a> +<span class="sourceLineNo">191</span> for (int i = 1; i < regionReplication; i++) {<a name="line.191"></a> +<span class="sourceLineNo">192</span> replicaRegionInfos.add(RegionReplicaUtil.getRegionInfoForReplica(hri, i));<a name="line.192"></a> +<span class="sourceLineNo">193</span> }<a name="line.193"></a> +<span class="sourceLineNo">194</span> }<a name="line.194"></a> +<span class="sourceLineNo">195</span> // create round robin procs. Note that we exclude the primary region's target server<a name="line.195"></a> +<span class="sourceLineNo">196</span> TransitRegionStateProcedure[] replicaRegionAssignProcs =<a name="line.196"></a> +<span class="sourceLineNo">197</span> env.getAssignmentManager().createRoundRobinAssignProcedures(replicaRegionInfos,<a name="line.197"></a> +<span class="sourceLineNo">198</span> Collections.singletonList(targetServer));<a name="line.198"></a> +<span class="sourceLineNo">199</span> // combine both the procs and return the result<a name="line.199"></a> +<span class="sourceLineNo">200</span> return ArrayUtils.addAll(primaryRegionProcs, replicaRegionAssignProcs);<a name="line.200"></a> +<span class="sourceLineNo">201</span> }<a name="line.201"></a> +<span class="sourceLineNo">202</span><a name="line.202"></a> +<span class="sourceLineNo">203</span> static TransitRegionStateProcedure[] createAssignProceduresForOpeningNewRegions(<a name="line.203"></a> +<span class="sourceLineNo">204</span> MasterProcedureEnv env, List<RegionInfo> regions, int regionReplication,<a name="line.204"></a> +<span class="sourceLineNo">205</span> ServerName targetServer) {<a name="line.205"></a> +<span class="sourceLineNo">206</span> return createAssignProcedures(env, regions, regionReplication, targetServer, false);<a name="line.206"></a> +<span class="sourceLineNo">207</span> }<a name="line.207"></a> +<span class="sourceLineNo">208</span><a name="line.208"></a> +<span class="sourceLineNo">209</span> static void reopenRegionsForRollback(MasterProcedureEnv env, List<RegionInfo> regions,<a name="line.209"></a> +<span class="sourceLineNo">210</span> int regionReplication, ServerName targetServer) {<a name="line.210"></a> +<span class="sourceLineNo">211</span> TransitRegionStateProcedure[] procs =<a name="line.211"></a> +<span class="sourceLineNo">212</span> createAssignProcedures(env, regions, regionReplication, targetServer, true);<a name="line.212"></a> +<span class="sourceLineNo">213</span> if (procs.length > 0) {<a name="line.213"></a> +<span class="sourceLineNo">214</span> env.getMasterServices().getMasterProcedureExecutor().submitProcedures(procs);<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span> }<a name="line.216"></a> +<span class="sourceLineNo">217</span><a name="line.217"></a> +<span class="sourceLineNo">218</span> static void removeNonDefaultReplicas(MasterProcedureEnv env, Stream<RegionInfo> regions,<a name="line.218"></a> +<span class="sourceLineNo">219</span> int regionReplication) {<a name="line.219"></a> +<span class="sourceLineNo">220</span> // Remove from in-memory states<a name="line.220"></a> +<span class="sourceLineNo">221</span> regions.flatMap(hri -> IntStream.range(1, regionReplication)<a name="line.221"></a> +<span class="sourceLineNo">222</span> .mapToObj(i -> RegionReplicaUtil.getRegionInfoForReplica(hri, i))).forEach(hri -> {<a name="line.222"></a> +<span class="sourceLineNo">223</span> env.getAssignmentManager().getRegionStates().deleteRegion(hri);<a name="line.223"></a> +<span class="sourceLineNo">224</span> env.getMasterServices().getServerManager().removeRegion(hri);<a name="line.224"></a> +<span class="sourceLineNo">225</span> FavoredNodesManager fnm = env.getMasterServices().getFavoredNodesManager();<a name="line.225"></a> +<span class="sourceLineNo">226</span> if (fnm != null) {<a name="line.226"></a> +<span class="sourceLineNo">227</span> fnm.deleteFavoredNodesForRegions(Collections.singletonList(hri));<a name="line.227"></a> +<span class="sourceLineNo">228</span> }<a name="line.228"></a> +<span class="sourceLineNo">229</span> });<a name="line.229"></a> +<span class="sourceLineNo">230</span> }<a name="line.230"></a> +<span class="sourceLineNo">231</span><a name="line.231"></a> +<span class="sourceLineNo">232</span> static void checkClosedRegion(MasterProcedureEnv env, RegionInfo regionInfo) throws IOException {<a name="line.232"></a> +<span class="sourceLineNo">233</span> if (WALSplitter.hasRecoveredEdits(env.getMasterServices().getFileSystem(),<a name="line.233"></a> +<span class="sourceLineNo">234</span> env.getMasterConfiguration(), regionInfo)) {<a name="line.234"></a> +<span class="sourceLineNo">235</span> throw new IOException("Recovered.edits are found in Region: " + regionInfo +<a name="line.235"></a> +<span class="sourceLineNo">236</span> ", abort split/merge to prevent data loss");<a name="line.236"></a> +<span class="sourceLineNo">237</span> }<a name="line.237"></a> +<span class="sourceLineNo">238</span> }<a name="line.238"></a> +<span class="sourceLineNo">239</span>}<a name="line.239"></a>
