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From git-site-r...@apache.org
Subject [4/8] hbase-site git commit: Published site at 30a052b3e5a8611841229198a64e41d74b6a3963.
Date Fri, 08 Jun 2018 14:49:06 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/028e3a93/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
index 90c31f4..7927e94 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
@@ -56,1929 +56,1938 @@
 <span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.48"></a>
 <span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.49"></a>
 <span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<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.exceptions.UnexpectedStateException;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.AssignmentListener;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.NoSuchProcedureException;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerState;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerStateNode;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.master.normalizer.RegionNormalizer;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.master.procedure.ProcedureSyncWait;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashException;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.75"></a>
-<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.76"></a>
-<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.procedure2.util.StringUtils;<a name="line.79"></a>
-<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.util.HasThread;<a name="line.80"></a>
-<span class="sourceLineNo">081</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.81"></a>
-<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.82"></a>
-<span class="sourceLineNo">083</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a name="line.83"></a>
-<span class="sourceLineNo">084</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;<a name="line.84"></a>
-<span class="sourceLineNo">085</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.85"></a>
-<span class="sourceLineNo">086</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;<a name="line.86"></a>
-<span class="sourceLineNo">087</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;<a name="line.87"></a>
-<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.89"></a>
-<span class="sourceLineNo">090</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.90"></a>
-<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.91"></a>
-<span class="sourceLineNo">092</span>import org.apache.hadoop.hbase.util.VersionInfo;<a name="line.92"></a>
-<span class="sourceLineNo">093</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.93"></a>
-<span class="sourceLineNo">094</span>import org.slf4j.Logger;<a name="line.94"></a>
-<span class="sourceLineNo">095</span>import org.slf4j.LoggerFactory;<a name="line.95"></a>
-<span class="sourceLineNo">096</span><a name="line.96"></a>
-<span class="sourceLineNo">097</span>/**<a name="line.97"></a>
-<span class="sourceLineNo">098</span> * The AssignmentManager is the coordinator for region assign/unassign operations.<a name="line.98"></a>
-<span class="sourceLineNo">099</span> * &lt;ul&gt;<a name="line.99"></a>
-<span class="sourceLineNo">100</span> * &lt;li&gt;In-memory states of regions and servers are stored in {@link RegionStates}.&lt;/li&gt;<a name="line.100"></a>
-<span class="sourceLineNo">101</span> * &lt;li&gt;hbase:meta state updates are handled by {@link RegionStateStore}.&lt;/li&gt;<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * &lt;/ul&gt;<a name="line.102"></a>
-<span class="sourceLineNo">103</span> * Regions are created by CreateTable, Split, Merge.<a name="line.103"></a>
-<span class="sourceLineNo">104</span> * Regions are deleted by DeleteTable, Split, Merge.<a name="line.104"></a>
-<span class="sourceLineNo">105</span> * Assigns are triggered by CreateTable, EnableTable, Split, Merge, ServerCrash.<a name="line.105"></a>
-<span class="sourceLineNo">106</span> * Unassigns are triggered by DisableTable, Split, Merge<a name="line.106"></a>
-<span class="sourceLineNo">107</span> */<a name="line.107"></a>
-<span class="sourceLineNo">108</span>@InterfaceAudience.Private<a name="line.108"></a>
-<span class="sourceLineNo">109</span>public class AssignmentManager implements ServerListener {<a name="line.109"></a>
-<span class="sourceLineNo">110</span>  private static final Logger LOG = LoggerFactory.getLogger(AssignmentManager.class);<a name="line.110"></a>
-<span class="sourceLineNo">111</span><a name="line.111"></a>
-<span class="sourceLineNo">112</span>  // TODO: AMv2<a name="line.112"></a>
-<span class="sourceLineNo">113</span>  //  - handle region migration from hbase1 to hbase2.<a name="line.113"></a>
-<span class="sourceLineNo">114</span>  //  - handle sys table assignment first (e.g. acl, namespace)<a name="line.114"></a>
-<span class="sourceLineNo">115</span>  //  - handle table priorities<a name="line.115"></a>
-<span class="sourceLineNo">116</span>  //  - If ServerBusyException trying to update hbase:meta, we abort the Master<a name="line.116"></a>
-<span class="sourceLineNo">117</span>  //   See updateRegionLocation in RegionStateStore.<a name="line.117"></a>
-<span class="sourceLineNo">118</span>  //<a name="line.118"></a>
-<span class="sourceLineNo">119</span>  // See also<a name="line.119"></a>
-<span class="sourceLineNo">120</span>  // https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.ystjyrkbtoq5<a name="line.120"></a>
-<span class="sourceLineNo">121</span>  // for other TODOs.<a name="line.121"></a>
-<span class="sourceLineNo">122</span><a name="line.122"></a>
-<span class="sourceLineNo">123</span>  public static final String BOOTSTRAP_THREAD_POOL_SIZE_CONF_KEY =<a name="line.123"></a>
-<span class="sourceLineNo">124</span>      "hbase.assignment.bootstrap.thread.pool.size";<a name="line.124"></a>
-<span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span>  public static final String ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY =<a name="line.126"></a>
-<span class="sourceLineNo">127</span>      "hbase.assignment.dispatch.wait.msec";<a name="line.127"></a>
-<span class="sourceLineNo">128</span>  private static final int DEFAULT_ASSIGN_DISPATCH_WAIT_MSEC = 150;<a name="line.128"></a>
-<span class="sourceLineNo">129</span><a name="line.129"></a>
-<span class="sourceLineNo">130</span>  public static final String ASSIGN_DISPATCH_WAITQ_MAX_CONF_KEY =<a name="line.130"></a>
-<span class="sourceLineNo">131</span>      "hbase.assignment.dispatch.wait.queue.max.size";<a name="line.131"></a>
-<span class="sourceLineNo">132</span>  private static final int DEFAULT_ASSIGN_DISPATCH_WAITQ_MAX = 100;<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span>  public static final String RIT_CHORE_INTERVAL_MSEC_CONF_KEY =<a name="line.134"></a>
-<span class="sourceLineNo">135</span>      "hbase.assignment.rit.chore.interval.msec";<a name="line.135"></a>
-<span class="sourceLineNo">136</span>  private static final int DEFAULT_RIT_CHORE_INTERVAL_MSEC = 5 * 1000;<a name="line.136"></a>
-<span class="sourceLineNo">137</span><a name="line.137"></a>
-<span class="sourceLineNo">138</span>  public static final String ASSIGN_MAX_ATTEMPTS =<a name="line.138"></a>
-<span class="sourceLineNo">139</span>      "hbase.assignment.maximum.attempts";<a name="line.139"></a>
-<span class="sourceLineNo">140</span>  private static final int DEFAULT_ASSIGN_MAX_ATTEMPTS = 10;<a name="line.140"></a>
-<span class="sourceLineNo">141</span><a name="line.141"></a>
-<span class="sourceLineNo">142</span>  /** Region in Transition metrics threshold time */<a name="line.142"></a>
-<span class="sourceLineNo">143</span>  public static final String METRICS_RIT_STUCK_WARNING_THRESHOLD =<a name="line.143"></a>
-<span class="sourceLineNo">144</span>      "hbase.metrics.rit.stuck.warning.threshold";<a name="line.144"></a>
-<span class="sourceLineNo">145</span>  private static final int DEFAULT_RIT_STUCK_WARNING_THRESHOLD = 60 * 1000;<a name="line.145"></a>
-<span class="sourceLineNo">146</span><a name="line.146"></a>
-<span class="sourceLineNo">147</span>  private final ProcedureEvent&lt;?&gt; metaInitializedEvent = new ProcedureEvent&lt;&gt;("meta initialized");<a name="line.147"></a>
-<span class="sourceLineNo">148</span>  private final ProcedureEvent&lt;?&gt; metaLoadEvent = new ProcedureEvent&lt;&gt;("meta load");<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>   * Indicator that AssignmentManager has recovered the region states so<a name="line.151"></a>
-<span class="sourceLineNo">152</span>   * that ServerCrashProcedure can be fully enabled and re-assign regions<a name="line.152"></a>
-<span class="sourceLineNo">153</span>   * of dead servers. So that when re-assignment happens, AssignmentManager<a name="line.153"></a>
-<span class="sourceLineNo">154</span>   * has proper region states.<a name="line.154"></a>
-<span class="sourceLineNo">155</span>   */<a name="line.155"></a>
-<span class="sourceLineNo">156</span>  private final ProcedureEvent&lt;?&gt; failoverCleanupDone = new ProcedureEvent&lt;&gt;("failover cleanup");<a name="line.156"></a>
-<span class="sourceLineNo">157</span><a name="line.157"></a>
-<span class="sourceLineNo">158</span>  /** Listeners that are called on assignment events. */<a name="line.158"></a>
-<span class="sourceLineNo">159</span>  private final CopyOnWriteArrayList&lt;AssignmentListener&gt; listeners =<a name="line.159"></a>
-<span class="sourceLineNo">160</span>      new CopyOnWriteArrayList&lt;AssignmentListener&gt;();<a name="line.160"></a>
-<span class="sourceLineNo">161</span><a name="line.161"></a>
-<span class="sourceLineNo">162</span>  // TODO: why is this different from the listeners (carried over from the old AM)<a name="line.162"></a>
-<span class="sourceLineNo">163</span>  private RegionStateListener regionStateListener;<a name="line.163"></a>
-<span class="sourceLineNo">164</span><a name="line.164"></a>
-<span class="sourceLineNo">165</span>  private RegionNormalizer regionNormalizer;<a name="line.165"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.client.Result;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.AssignmentListener;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.NoSuchProcedureException;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerState;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.master.assignment.RegionStates.ServerStateNode;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.master.normalizer.RegionNormalizer;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.master.procedure.ProcedureSyncWait;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashException;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore;<a name="line.79"></a>
+<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.procedure2.util.StringUtils;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.regionserver.SequenceId;<a name="line.81"></a>
+<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.util.HasThread;<a name="line.82"></a>
+<span class="sourceLineNo">083</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.83"></a>
+<span class="sourceLineNo">084</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.84"></a>
+<span class="sourceLineNo">085</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a name="line.85"></a>
+<span class="sourceLineNo">086</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;<a name="line.86"></a>
+<span class="sourceLineNo">087</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.87"></a>
+<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;<a name="line.88"></a>
+<span class="sourceLineNo">089</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;<a name="line.89"></a>
+<span class="sourceLineNo">090</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.90"></a>
+<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.91"></a>
+<span class="sourceLineNo">092</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.92"></a>
+<span class="sourceLineNo">093</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.93"></a>
+<span class="sourceLineNo">094</span>import org.apache.hadoop.hbase.util.VersionInfo;<a name="line.94"></a>
+<span class="sourceLineNo">095</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.95"></a>
+<span class="sourceLineNo">096</span>import org.slf4j.Logger;<a name="line.96"></a>
+<span class="sourceLineNo">097</span>import org.slf4j.LoggerFactory;<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> * The AssignmentManager is the coordinator for region assign/unassign operations.<a name="line.100"></a>
+<span class="sourceLineNo">101</span> * &lt;ul&gt;<a name="line.101"></a>
+<span class="sourceLineNo">102</span> * &lt;li&gt;In-memory states of regions and servers are stored in {@link RegionStates}.&lt;/li&gt;<a name="line.102"></a>
+<span class="sourceLineNo">103</span> * &lt;li&gt;hbase:meta state updates are handled by {@link RegionStateStore}.&lt;/li&gt;<a name="line.103"></a>
+<span class="sourceLineNo">104</span> * &lt;/ul&gt;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> * Regions are created by CreateTable, Split, Merge.<a name="line.105"></a>
+<span class="sourceLineNo">106</span> * Regions are deleted by DeleteTable, Split, Merge.<a name="line.106"></a>
+<span class="sourceLineNo">107</span> * Assigns are triggered by CreateTable, EnableTable, Split, Merge, ServerCrash.<a name="line.107"></a>
+<span class="sourceLineNo">108</span> * Unassigns are triggered by DisableTable, Split, Merge<a name="line.108"></a>
+<span class="sourceLineNo">109</span> */<a name="line.109"></a>
+<span class="sourceLineNo">110</span>@InterfaceAudience.Private<a name="line.110"></a>
+<span class="sourceLineNo">111</span>public class AssignmentManager implements ServerListener {<a name="line.111"></a>
+<span class="sourceLineNo">112</span>  private static final Logger LOG = LoggerFactory.getLogger(AssignmentManager.class);<a name="line.112"></a>
+<span class="sourceLineNo">113</span><a name="line.113"></a>
+<span class="sourceLineNo">114</span>  // TODO: AMv2<a name="line.114"></a>
+<span class="sourceLineNo">115</span>  //  - handle region migration from hbase1 to hbase2.<a name="line.115"></a>
+<span class="sourceLineNo">116</span>  //  - handle sys table assignment first (e.g. acl, namespace)<a name="line.116"></a>
+<span class="sourceLineNo">117</span>  //  - handle table priorities<a name="line.117"></a>
+<span class="sourceLineNo">118</span>  //  - If ServerBusyException trying to update hbase:meta, we abort the Master<a name="line.118"></a>
+<span class="sourceLineNo">119</span>  //   See updateRegionLocation in RegionStateStore.<a name="line.119"></a>
+<span class="sourceLineNo">120</span>  //<a name="line.120"></a>
+<span class="sourceLineNo">121</span>  // See also<a name="line.121"></a>
+<span class="sourceLineNo">122</span>  // https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.ystjyrkbtoq5<a name="line.122"></a>
+<span class="sourceLineNo">123</span>  // for other TODOs.<a name="line.123"></a>
+<span class="sourceLineNo">124</span><a name="line.124"></a>
+<span class="sourceLineNo">125</span>  public static final String BOOTSTRAP_THREAD_POOL_SIZE_CONF_KEY =<a name="line.125"></a>
+<span class="sourceLineNo">126</span>      "hbase.assignment.bootstrap.thread.pool.size";<a name="line.126"></a>
+<span class="sourceLineNo">127</span><a name="line.127"></a>
+<span class="sourceLineNo">128</span>  public static final String ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY =<a name="line.128"></a>
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+<span class="sourceLineNo">397</span>  public Set&lt;RegionInfo&gt; getMetaRegionSet() {<a name="line.397"></a>
+<span class="sourceLineNo">398</span>    return META_REGION_SET;<a name="line.398"></a>
+<span class="sourceLineNo">399</span>  }<a name="line.399"></a>
+<span class="sourceLineNo">400</span><a name="line.400"></a>
 <span class="sourceLineNo">401</span>  // ============================================================================================<a name="line.401"></a>
-<span class="sourceLineNo">402</span>  public boolean isMetaInitialized() {<a name="line.402"></a>
-<span class="sourceLineNo">403</span>    return metaInitializedEvent.isReady();<a name="line.403"></a>
-<span class="sourceLineNo">404</span>  }<a name="line.404"></a>
-<span class="sourceLineNo">405</span><a name="line.405"></a>
-<span class="sourceLineNo">406</span>  public boolean isMetaRegionInTransition() {<a name="line.406"></a>
-<span class="sourceLineNo">407</span>    return !isMetaInitialized();<a name="line.407"></a>
-<span class="sourceLineNo">408</span>  }<a name="line.408"></a>
-<span class="sourceLineNo">409</span><a name="line.409"></a>
-<span class="sourceLineNo">410</span>  public boolean waitMetaInitialized(final Procedure proc) {<a name="line.410"></a>
-<span class="sourceLineNo">411</span>    // TODO: handle multiple meta. should this wait on all meta?<a name="line.411"></a>
-<span class="sourceLineNo">412</span>    // this is used by the ServerCrashProcedure...<a name="line.412"></a>
-<span class="sourceLineNo">413</span>    return waitMetaInitialized(proc, RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.413"></a>
-<span class="sourceLineNo">414</span>  }<a name="line.414"></a>
-<span class="sourceLineNo">415</span><a name="line.415"></a>
-<span class="sourceLineNo">416</span>  public boolean waitMetaInitialized(final Procedure proc, final RegionInfo regionInfo) {<a name="line.416"></a>
-<span class="sourceLineNo">417</span>    return getMetaInitializedEvent(getMetaForRegion(regionInfo)).suspendIfNotReady(proc);<a name="line.417"></a>
-<span class="sourceLineNo">418</span>  }<a name="line.418"></a>
-<span class="sourceLineNo">419</span><a name="line.419"></a>
-<span class="sourceLineNo">420</span>  private void setMetaInitialized(final RegionInfo metaRegionInfo, final boolean isInitialized) {<a name="line.420"></a>
-<span class="sourceLineNo">421</span>    assert isMetaRegion(metaRegionInfo) : "unexpected non-meta region " + metaRegionInfo;<a name="line.421"></a>
-<span class="sourceLineNo">422</span>    final ProcedureEvent metaInitEvent = getMetaInitializedEvent(metaRegionInfo);<a name="line.422"></a>
-<span class="sourceLineNo">423</span>    if (isInitialized) {<a name="line.423"></a>
-<span class="sourceLineNo">424</span>      metaInitEvent.wake(getProcedureScheduler());<a name="line.424"></a>
-<span class="sourceLineNo">425</span>    } else {<a name="line.425"></a>
-<span class="sourceLineNo">426</span>      metaInitEvent.suspend();<a name="line.426"></a>
-<span class="sourceLineNo">427</span>    }<a name="line.427"></a>
-<span class="sourceLineNo">428</span>  }<a name="line.428"></a>
-<span class="sourceLineNo">429</span><a name="line.429"></a>
-<span class="sourceLineNo">430</span>  private ProcedureEvent getMetaInitializedEvent(final RegionInfo metaRegionInfo) {<a name="line.430"></a>
-<span class="sourceLineNo">431</span>    assert isMetaRegion(metaRegionInfo) : "unexpected non-meta region " + metaRegionInfo;<a name="line.431"></a>
-<span class="sourceLineNo">432</span>    // TODO: handle multiple meta.<a name="line.432"></a>
-<span class="sourceLineNo">433</span>    return metaInitializedEvent;<a name="line.433"></a>
-<span class="sourceLineNo">434</span>  }<a name="line.434"></a>
-<span class="sourceLineNo">435</span><a name="line.435"></a>
-<span class="sourceLineNo">436</span>  public boolean waitMetaLoaded(final Procedure proc) {<a name="line.436"></a>
-<span class="sourceLineNo">437</span>    return metaLoadEvent.suspendIfNotReady(proc);<a name="line.437"></a>
-<span class="sourceLineNo">438</span>  }<a name="line.438"></a>
-<span class="sourceLineNo">439</span><a name="line.439"></a>
-<span class="sourceLineNo">440</span>  protected void wakeMetaLoadedEvent() {<a name="line.440"></a>
-<span class="sourceLineNo">441</span>    metaLoadEvent.wake(getProcedureScheduler());<a name="line.441"></a>
-<span class="sourceLineNo">442</span>    assert isMetaLoaded() : "expected meta to be loaded";<a name="line.442"></a>
-<span class="sourceLineNo">443</span>  }<a name="line.443"></a>
-<span class="sourceLineNo">444</span><a name="line.444"></a>
-<span class="sourceLineNo">445</span>  public boolean isMetaLoaded() {<a name="line.445"></a>
-<span class="sourceLineNo">446</span>    return metaLoadEvent.isReady();<a name="line.446"></a>
-<span class="sourceLineNo">447</span>  }<a name="line.447"></a>
-<span class="sourceLineNo">448</span><a name="line.448"></a>
-<span class="sourceLineNo">449</span>  /**<a name="line.449"></a>
-<span class="sourceLineNo">450</span>   * Start a new thread to check if there are region servers whose versions are higher than others.<a name="line.450"></a>
-<span class="sourceLineNo">451</span>   * If so, move all system table regions to RS with the highest version to keep compatibility.<a name="line.451"></a>
-<span class="sourceLineNo">452</span>   * The reason is, RS in new version may not be able to access RS in old version when there are<a name="line.452"></a>
-<span class="sourceLineNo">453</span>   * some incompatible changes.<a name="line.453"></a>
-<span class="sourceLineNo">454</span>   * &lt;p&gt;This method is called when a new RegionServer is added to cluster only.&lt;/p&gt;<a name="line.454"></a>
-<span class="sourceLineNo">455</span>   */<a name="line.455"></a>
-<span class="sourceLineNo">456</span>  public void checkIfShouldMoveSystemRegionAsync() {<a name="line.456"></a>
-<span class="sourceLineNo">457</span>    // TODO: Fix this thread. If a server is killed and a new one started, this thread thinks that<a name="line.457"></a>
-<span class="sourceLineNo">458</span>    // it should 'move' the system tables from the old server to the new server but<a name="line.458"></a>
-<span class="sourceLineNo">459</span>    // ServerCrashProcedure is on it; and it will take care of the assign without dataloss.<a name="line.459"></a>
-<span class="sourceLineNo">460</span>    if (this.master.getServerManager().countOfRegionServers() &lt;= 1) {<a name="line.460"></a>
-<span class="sourceLineNo">461</span>      return;<a name="line.461"></a>
-<span class="sourceLineNo">462</span>    }<a name="line.462"></a>
-<span class="sourceLineNo">463</span>    // This thread used to run whenever there was a change in the cluster. The ZooKeeper<a name="line.463"></a>
-<span class="sourceLineNo">464</span>    // childrenChanged notification came in before the nodeDeleted message and so this method<a name="line.464"></a>
-<span class="sourceLineNo">465</span>    // cold run before a ServerCrashProcedure could run. That meant that this thread could see<a name="line.465"></a>
-<span class="sourceLineNo">466</span>    // a Crashed Server before ServerCrashProcedure and it could find system regions on the<a name="line.466"></a>
-<span class="sourceLineNo">467</span>    // crashed server and go move them before ServerCrashProcedure had a chance; could be<a name="line.467"></a>
-<span class="sourceLineNo">468</span>    // dataloss too if WALs were not recovered.<a name="line.468"></a>
-<span class="sourceLineNo">469</span>    new Thread(() -&gt; {<a name="line.469"></a>
-<span class="sourceLineNo">470</span>      try {<a name="line.470"></a>
-<span class="sourceLineNo">471</span>        synchronized (checkIfShouldMoveSystemRegionLock) {<a name="line.471"></a>
-<span class="sourceLineNo">472</span>          List&lt;RegionPlan&gt; plans = new ArrayList&lt;&gt;();<a name="line.472"></a>
-<span class="sourceLineNo">473</span>          // TODO: I don't think this code does a good job if all servers in cluster have same<a name="line.473"></a>
-<span class="sourceLineNo">474</span>          // version. It looks like it will schedule unnecessary moves.<a name="line.474"></a>
-<span class="sourceLineNo">475</span>          for (ServerName server : getExcludedServersForSystemTable()) {<a name="line.475"></a>
-<span class="sourceLineNo">476</span>            if (master.getServerManager().isServerDead(server)) {<a name="line.476"></a>
-<span class="sourceLineNo">477</span>              // TODO: See HBASE-18494 and HBASE-18495. Though getExcludedServersForSystemTable()<a name="line.477"></a>
-<span class="sourceLineNo">478</span>              // considers only online servers, the server could be queued for dead server<a name="line.478"></a>
-<span class="sourceLineNo">479</span>              // processing. As region assignments for crashed server is handled by<a name="line.479"></a>
-<span class="sourceLineNo">480</span>              // ServerCrashProcedure, do NOT handle them here. The goal is to handle this through<a name="line.480"></a>
-<span class="sourceLineNo">481</span>              // regular flow of LoadBalancer as a favored node and not to have this special<a name="line.481"></a>
-<span class="sourceLineNo">482</span>              // handling.<a name="line.482"></a>
-<span class="sourceLineNo">483</span>              continue;<a name="line.483"></a>
-<span class="sourceLineNo">484</span>            }<a name="line.484"></a>
-<span class="sourceLineNo">485</span>            List&lt;RegionInfo&gt; regionsShouldMove = getSystemTables(server);<a name="line.485"></a>
-<span class="sourceLineNo">486</span>            if (!regionsShouldMove.isEmpty()) {<a name="line.486"></a>
-<span class="sourceLineNo">487</span>              for (RegionInfo regionInfo : regionsShouldMove) {<a name="line.487"></a>
-<span class="sourceLineNo">488</span>                // null value for dest forces destination server to be selected by balancer<a name="line.488"></a>
-<span class="sourceLineNo">489</span>                RegionPlan plan = new RegionPlan(regionInfo, server, null);<a name="line.489"></a>
-<span class="sourceLineNo">490</span>                if (regionInfo.isMetaRegion()) {<a name="line.490"></a>
-<span class="sourceLineNo">491</span>                  // Must move meta region first.<a name="line.491"></a>
-<span class="sourceLineNo">492</span>                  LOG.info("Async MOVE of {} to newer Server={}",<a name="line.492"></a>
-<span class="sourceLineNo">493</span>                      regionInfo.getEncodedName(), server);<a name="line.493"></a>
-<span class="sourceLineNo">494</span>                  moveAsync(plan);<a name="line.494"></a>
-<span class="sourceLineNo">495</span>                } else {<a name="line.495"></a>
-<span class="sourceLineNo">496</span>                  plans.add(plan);<a name="line.496"></a>
-<span class="sourceLineNo">497</span>                }<a name="line.497"></a>
-<span class="sourceLineNo">498</span>              }<a name="line.498"></a>
-<span class="sourceLineNo">499</span>            }<a name="line.499"></a>
-<span class="sourceLineNo">500</span>            for (RegionPlan plan : plans) {<a name="line.500"></a>
-<span class="sourceLineNo">501</span>              LOG.info("Async MOVE of {} to newer Server={}",<a name="line.501"></a>
-<span class="sourceLineNo">502</span>                  plan.getRegionInfo().getEncodedName(), server);<a name="line.502"></a>
-<span class="sourceLineNo">503</span>              moveAsync(plan);<a name="line.503"></a>
-<span class="sourceLineNo">504</span>            }<a name="line.504"></a>
-<span class="sourceLineNo">505</span>          }<a name="line.505"></a>
-<span class="sourceLineNo">506</span>        }<a name="line.506"></a>
-<span class="sourceLineNo">507</span>      } catch (Throwable t) {<a name="line.507"></a>
-<span class="sourceLineNo">508</span>        LOG.error(t.toString(), t);<a name="line.508"></a>
-<span class="sourceLineNo">509</span>      }<a name="line.509"></a>
-<span class="sourceLineNo">510</span>    }).start();<a name="line.510"></a>
-<span class="sourceLineNo">511</span>  }<a name="line.511"></a>
-<span class="sourceLineNo">512</span><a name="line.512"></a>
-<span class="sourceLineNo">513</span>  private List&lt;RegionInfo&gt; getSystemTables(ServerName serverName) {<a name="line.513"></a>
-<span class="sourceLineNo">514</span>    Set&lt;RegionStateNode&gt; regions = this.getRegionStates().getServerNode(serverName).getRegions();<a name="line.514"></a>
-<span class="sourceLineNo">515</span>    if (regions == null) {<a name="line.515"></a>
-<span class="sourceLineNo">516</span>      return new ArrayList&lt;&gt;();<a name="line.516"></a>
-<span class="sourceLineNo">517</span>    }<a name="line.517"></a>
-<span class="sourceLineNo">518</span>    return regions.stream()<a name="line.518"></a>
-<span class="sourceLineNo">519</span>        .map(RegionStateNode::getRegionInfo)<a name="line.519"></a>
-<span class="sourceLineNo">520</span>        .filter(r -&gt; r.getTable().isSystemTable())<a name="line.520"></a>
-<span class="sourceLineNo">521</span>        .collect(Collectors.toList());<a name="line.521"></a>
-<span class="sourceLineNo">522</span>  }<a name="line.522"></a>
-<span class="sourceLineNo">523</span><a name="line.523"></a>
-<span class="sourceLineNo">524</span>  public void assign(final RegionInfo regionInfo, ServerName sn) throws IOException {<a name="line.524"></a>
-<span class="sourceLineNo">525</span>    AssignProcedure proc = createAssignProcedure(regionInfo, sn);<a name="line.525"></a>
-<span class="sourceLineNo">526</span>    ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.526"></a>
-<span class="sourceLineNo">527</span>  }<a name="line.527"></a>
-<span class="sourceLineNo">528</span><a name="line.528"></a>
-<span class="sourceLineNo">529</span>  public void assign(final RegionInfo regionInfo) throws IOException {<a name="line.529"></a>
-<span class="sourceLineNo">530</span>    AssignProcedure proc = createAssignProcedure(regionInfo);<a name="line.530"></a>
-<span class="sourceLineNo">531</span>    ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.531"></a>
-<span class="sourceLineNo">532</span>  }<a name="line.532"></a>
-<span class="sourceLineNo">533</span><a name="line.533"></a>
-<span class="sourceLineNo">534</span>  public void unassign(final RegionInfo regionInfo) throws IOException {<a name="line.534"></a>
-<span class="sourceLineNo">535</span>    unassign(regionInfo, false);<a name="line.535"></a>
-<span class="sourceLineNo">536</span>  }<a name="line.536"></a>
-<span class="sourceLineNo">537</span><a name="line.537"></a>
-<span class="sourceLineNo">538</span>  public void unassign(final RegionInfo regionInfo, final boolean forceNewPlan)<a name="line.538"></a>
-<span class="sourceLineNo">539</span>  throws IOException {<a name="line.539"></a>
-<span class="sourceLineNo">540</span>    // TODO: rename this reassign<a name="line.540"></a>
-<span class="sourceLineNo">541</span>    RegionStateNode node = this.regionStates.getRegionStateNode(regionInfo);<a name="line.541"></a>
-<span class="sourceLineNo">542</span>    ServerName destinationServer = node.getRegionLocation();<a name="line.542"></a>
-<span class="sourceLineNo">543</span>    if (destinationServer == null) {<a name="line.543"></a>
-<span class="sourceLineNo">544</span>      throw new UnexpectedStateException("DestinationServer is null; Assigned? " + node.toString());<a name="line.544"></a>
-<span class="sourceLineNo">545</span>    }<a name="line.545"></a>
-<span class="sourceLineNo">546</span>    assert destinationServer != null; node.toString();<a name="line.546"></a>
-<span class="sourceLineNo">547</span>    UnassignProcedure proc = createUnassignProcedure(regionInfo, destinationServer, forceNewPlan);<a name="line.547"></a>
-<span class="sourceLineNo">548</span>    ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.548"></a>
-<span class="sourceLineNo">549</span>  }<a name="line.549"></a>
-<span class="sourceLineNo">550</span><a name="line.550"></a>
-<span class="sourceLineNo">551</span>  public void move(final RegionInfo regionInfo) throws IOException {<a name="line.551"></a>
-<span class="sourceLineNo">552</span>    RegionStateNode node = this.regionStates.getRegionStateNode(regionInfo);<a name="line.552"></a>
-<span class="sourceLineNo">553</span>    ServerName sourceServer = node.getRegionLocation();<a name="line.553"></a>
-<span class="sourceLineNo">554</span>    RegionPlan plan = new RegionPlan(regionInfo, sourceServer, null);<a name="line.554"></a>
-<span class="sourceLineNo">555</span>    MoveRegionProcedure proc = createMoveRegionProcedure(plan);<a name="line.555"></a>
-<span class="sourceLineNo">556</span>    ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.556"></a>
-<span class="sourceLineNo">557</span>  }<a name="line.557"></a>
-<span class="sourceLineNo">558</span><a name="line.558"></a>
-<span class="sourceLineNo">559</span>  public Future&lt;byte[]&gt; moveAsync(final RegionPlan regionPlan) throws HBaseIOException {<a name="line.559"></a>
-<span class="sourceLineNo">560</span>    MoveRegionProcedure proc = createMoveRegionProcedure(regionPlan);<a name="line.560"></a>
-<span class="sourceLineNo">561</span>    return ProcedureSyncWait.submitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.561"></a>
-<span class="sourceLineNo">562</span>  }<a name="line.562"></a>
-<span class="sourceLineNo">563</span><a name="line.563"></a>
-<span class="sourceLineNo">564</span>  @VisibleForTesting<a name="line.564"></a>
-<span class="sourceLineNo">565</span>  public boolean waitForAssignment(final RegionInfo regionInfo) throws IOException {<a name="line.565"></a>
-<span class="sourceLineNo">566</span>    return waitForAssignment(regionInfo, Long.MAX_VALUE);<a name="line.566"></a>
-<span class="sourceLineNo">567</span>  }<a name="line.567"></a>
-<span class="sourceLineNo">568</span><a name="line.568"></a>
-<span class="sourceLineNo">569</span>  @VisibleForTesting<a name="line.569"></a>
-<span class="sourceLineNo">570</span>  // TODO: Remove this?<a name="line.570"></a>
-<span class="sourceLineNo">571</span>  public boolean waitForAssignment(final RegionInfo regionInfo, final long timeout)<a name="line.571"></a>
-<span class="sourceLineNo">572</span>  throws IOException {<a name="line.572"></a>
-<span class="sourceLineNo">573</span>    RegionStateNode node = null;<a name="line.573"></a>
-<span class="sourceLineNo">574</span>    // This method can be called before the regionInfo has made it into the regionStateMap<a name="line.574"></a>
-<span class="sourceLineNo">575</span>    // so wait around here a while.<a name="line.575"></a>
-<span class="sourceLineNo">576</span>    long startTime = System.currentTimeMillis();<a name="line.576"></a>
-<span class="sourceLineNo">577</span>    // Something badly wrong if takes ten seconds to register a region.<a name="line.577"></a>
-<span class="sourceLineNo">578</span>    long endTime = startTime + 10000;<a name="line.578"></a>
-<span class="sourceLineNo">579</span>    while ((node = regionStates.getRegionStateNode(regionInfo)) == null &amp;&amp; isRunn

<TRUNCATED>

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