You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/09/04 14:48:08 UTC
[19/51] [partial] hbase-site git commit: Published site at
c6a65ba63fce85ac7c4b62b96ef2bbe6c35d2f00.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/293abb17/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 fe4e081..eecf20f 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
@@ -44,1858 +44,1838 @@
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.HConstants;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.PleaseHoldException;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.RegionException;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.ServerName;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.TableName;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.UnknownRegionException;<a name="line.42"></a>
-<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.YouAreDeadException;<a name="line.43"></a>
-<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.DoNotRetryRegionException;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.Result;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.NoSuchProcedureException;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.master.procedure.ProcedureSyncWait;<a name="line.64"></a>
-<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.65"></a>
-<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.66"></a>
-<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.procedure2.util.StringUtils;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.regionserver.SequenceId;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.util.HasThread;<a name="line.74"></a>
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-<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.util.VersionInfo;<a name="line.77"></a>
-<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.78"></a>
-<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.79"></a>
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-<span class="sourceLineNo">081</span>import org.apache.zookeeper.KeeperException;<a name="line.81"></a>
-<span class="sourceLineNo">082</span>import org.slf4j.Logger;<a name="line.82"></a>
-<span class="sourceLineNo">083</span>import org.slf4j.LoggerFactory;<a name="line.83"></a>
+<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.ServerName;<a name="line.39"></a>
+<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.TableName;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.UnknownRegionException;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.YouAreDeadException;<a name="line.42"></a>
+<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.client.DoNotRetryRegionException;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.44"></a>
+<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.client.Result;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.47"></a>
+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.favored.FavoredNodesManager;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.favored.FavoredNodesPromoter;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.master.LoadBalancer;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.master.MasterServices;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.master.MetricsAssignmentManager;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.master.RegionPlan;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.master.RegionState.State;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.master.ServerListener;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.master.TableStateManager;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureScheduler;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.master.procedure.ProcedureSyncWait;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.master.procedure.ServerCrashProcedure;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.procedure2.ProcedureEvent;<a name="line.65"></a>
+<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;<a name="line.66"></a>
+<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore;<a name="line.67"></a>
+<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.procedure2.util.StringUtils;<a name="line.68"></a>
+<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.regionserver.SequenceId;<a name="line.69"></a>
+<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.70"></a>
+<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.71"></a>
+<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.HasThread;<a name="line.72"></a>
+<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.73"></a>
+<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.74"></a>
+<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.util.VersionInfo;<a name="line.75"></a>
+<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.76"></a>
+<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.77"></a>
+<span class="sourceLineNo">078</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.78"></a>
+<span class="sourceLineNo">079</span>import org.apache.zookeeper.KeeperException;<a name="line.79"></a>
+<span class="sourceLineNo">080</span>import org.slf4j.Logger;<a name="line.80"></a>
+<span class="sourceLineNo">081</span>import org.slf4j.LoggerFactory;<a name="line.81"></a>
+<span class="sourceLineNo">082</span><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><a name="line.84"></a>
-<span class="sourceLineNo">085</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.87"></a>
-<span class="sourceLineNo">088</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.89"></a>
-<span class="sourceLineNo">090</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;<a name="line.90"></a>
-<span class="sourceLineNo">091</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>/**<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * The AssignmentManager is the coordinator for region assign/unassign operations.<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * <ul><a name="line.95"></a>
-<span class="sourceLineNo">096</span> * <li>In-memory states of regions and servers are stored in {@link RegionStates}.</li><a name="line.96"></a>
-<span class="sourceLineNo">097</span> * <li>hbase:meta state updates are handled by {@link RegionStateStore}.</li><a name="line.97"></a>
-<span class="sourceLineNo">098</span> * </ul><a name="line.98"></a>
-<span class="sourceLineNo">099</span> * Regions are created by CreateTable, Split, Merge.<a name="line.99"></a>
-<span class="sourceLineNo">100</span> * Regions are deleted by DeleteTable, Split, Merge.<a name="line.100"></a>
-<span class="sourceLineNo">101</span> * Assigns are triggered by CreateTable, EnableTable, Split, Merge, ServerCrash.<a name="line.101"></a>
-<span class="sourceLineNo">102</span> * Unassigns are triggered by DisableTable, Split, Merge<a name="line.102"></a>
-<span class="sourceLineNo">103</span> */<a name="line.103"></a>
-<span class="sourceLineNo">104</span>@InterfaceAudience.Private<a name="line.104"></a>
-<span class="sourceLineNo">105</span>public class AssignmentManager implements ServerListener {<a name="line.105"></a>
-<span class="sourceLineNo">106</span> private static final Logger LOG = LoggerFactory.getLogger(AssignmentManager.class);<a name="line.106"></a>
-<span class="sourceLineNo">107</span><a name="line.107"></a>
-<span class="sourceLineNo">108</span> // TODO: AMv2<a name="line.108"></a>
-<span class="sourceLineNo">109</span> // - handle region migration from hbase1 to hbase2.<a name="line.109"></a>
-<span class="sourceLineNo">110</span> // - handle sys table assignment first (e.g. acl, namespace)<a name="line.110"></a>
-<span class="sourceLineNo">111</span> // - handle table priorities<a name="line.111"></a>
-<span class="sourceLineNo">112</span> // - If ServerBusyException trying to update hbase:meta, we abort the Master<a name="line.112"></a>
-<span class="sourceLineNo">113</span> // See updateRegionLocation in RegionStateStore.<a name="line.113"></a>
-<span class="sourceLineNo">114</span> //<a name="line.114"></a>
-<span class="sourceLineNo">115</span> // See also<a name="line.115"></a>
-<span class="sourceLineNo">116</span> // https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.ystjyrkbtoq5<a name="line.116"></a>
-<span class="sourceLineNo">117</span> // for other TODOs.<a name="line.117"></a>
-<span class="sourceLineNo">118</span><a name="line.118"></a>
-<span class="sourceLineNo">119</span> public static final String BOOTSTRAP_THREAD_POOL_SIZE_CONF_KEY =<a name="line.119"></a>
-<span class="sourceLineNo">120</span> "hbase.assignment.bootstrap.thread.pool.size";<a name="line.120"></a>
-<span class="sourceLineNo">121</span><a name="line.121"></a>
-<span class="sourceLineNo">122</span> public static final String ASSIGN_DISPATCH_WAIT_MSEC_CONF_KEY =<a name="line.122"></a>
-<span class="sourceLineNo">123</span> "hbase.assignment.dispatch.wait.msec";<a name="line.123"></a>
-<span class="sourceLineNo">124</span> private static final int DEFAULT_ASSIGN_DISPATCH_WAIT_MSEC = 150;<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_WAITQ_MAX_CONF_KEY =<a name="line.126"></a>
-<span class="sourceLineNo">127</span> "hbase.assignment.dispatch.wait.queue.max.size";<a name="line.127"></a>
-<span class="sourceLineNo">128</span> private static final int DEFAULT_ASSIGN_DISPATCH_WAITQ_MAX = 100;<a name="line.128"></a>
-<span class="sourceLineNo">129</span><a name="line.129"></a>
-<span class="sourceLineNo">130</span> public static final String RIT_CHORE_INTERVAL_MSEC_CONF_KEY =<a name="line.130"></a>
-<span class="sourceLineNo">131</span> "hbase.assignment.rit.chore.interval.msec";<a name="line.131"></a>
-<span class="sourceLineNo">132</span> private static final int DEFAULT_RIT_CHORE_INTERVAL_MSEC = 60 * 1000;<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> public static final String ASSIGN_MAX_ATTEMPTS =<a name="line.134"></a>
-<span class="sourceLineNo">135</span> "hbase.assignment.maximum.attempts";<a name="line.135"></a>
-<span class="sourceLineNo">136</span> private static final int DEFAULT_ASSIGN_MAX_ATTEMPTS = 10;<a name="line.136"></a>
-<span class="sourceLineNo">137</span><a name="line.137"></a>
-<span class="sourceLineNo">138</span> /** Region in Transition metrics threshold time */<a name="line.138"></a>
-<span class="sourceLineNo">139</span> public static final String METRICS_RIT_STUCK_WARNING_THRESHOLD =<a name="line.139"></a>
-<span class="sourceLineNo">140</span> "hbase.metrics.rit.stuck.warning.threshold";<a name="line.140"></a>
-<span class="sourceLineNo">141</span> private static final int DEFAULT_RIT_STUCK_WARNING_THRESHOLD = 60 * 1000;<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span> private final ProcedureEvent<?> metaAssignEvent = new ProcedureEvent<>("meta assign");<a name="line.143"></a>
-<span class="sourceLineNo">144</span> private final ProcedureEvent<?> metaLoadEvent = new ProcedureEvent<>("meta load");<a name="line.144"></a>
-<span class="sourceLineNo">145</span><a name="line.145"></a>
-<span class="sourceLineNo">146</span> private final MetricsAssignmentManager metrics;<a name="line.146"></a>
-<span class="sourceLineNo">147</span> private final RegionInTransitionChore ritChore;<a name="line.147"></a>
-<span class="sourceLineNo">148</span> private final MasterServices master;<a name="line.148"></a>
-<span class="sourceLineNo">149</span><a name="line.149"></a>
-<span class="sourceLineNo">150</span> private final AtomicBoolean running = new AtomicBoolean(false);<a name="line.150"></a>
-<span class="sourceLineNo">151</span> private final RegionStates regionStates = new RegionStates();<a name="line.151"></a>
-<span class="sourceLineNo">152</span> private final RegionStateStore regionStateStore;<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span> private final boolean shouldAssignRegionsWithFavoredNodes;<a name="line.154"></a>
-<span class="sourceLineNo">155</span> private final int assignDispatchWaitQueueMaxSize;<a name="line.155"></a>
-<span class="sourceLineNo">156</span> private final int assignDispatchWaitMillis;<a name="line.156"></a>
-<span class="sourceLineNo">157</span> private final int assignMaxAttempts;<a name="line.157"></a>
+<span class="sourceLineNo">085</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<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><a name="line.90"></a>
+<span class="sourceLineNo">091</span>/**<a name="line.91"></a>
+<span class="sourceLineNo">092</span> * The AssignmentManager is the coordinator for region assign/unassign operations.<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * <ul><a name="line.93"></a>
+<span class="sourceLineNo">094</span> * <li>In-memory states of regions and servers are stored in {@link RegionStates}.</li><a name="line.94"></a>
+<span class="sourceLineNo">095</span> * <li>hbase:meta state updates are handled by {@link RegionStateStore}.</li><a name="line.95"></a>
+<span class="sourceLineNo">096</span> * </ul><a name="line.96"></a>
+<span class="sourceLineNo">097</span> * Regions are created by CreateTable, Split, Merge.<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * Regions are deleted by DeleteTable, Split, Merge.<a name="line.98"></a>
+<span class="sourceLineNo">099</span> * Assigns are triggered by CreateTable, EnableTable, Split, Merge, ServerCrash.<a name="line.99"></a>
+<span class="sourceLineNo">100</span> * Unassigns are triggered by DisableTable, Split, Merge<a name="line.100"></a>
+<span class="sourceLineNo">101</span> */<a name="line.101"></a>
+<span class="sourceLineNo">102</span>@InterfaceAudience.Private<a name="line.102"></a>
+<span class="sourceLineNo">103</span>public class AssignmentManager implements ServerListener {<a name="line.103"></a>
+<span class="sourceLineNo">104</span> private static final Logger LOG = LoggerFactory.getLogger(AssignmentManager.class);<a name="line.104"></a>
+<span class="sourceLineNo">105</span><a name="line.105"></a>
+<span class="sourceLineNo">106</span> // TODO: AMv2<a name="line.106"></a>
+<span class="sourceLineNo">107</span> // - handle region migration from hbase1 to hbase2.<a name="line.107"></a>
+<span class="sourceLineNo">108</span> // - handle sys table assignment first (e.g. acl, namespace)<a name="line.108"></a>
+<span class="sourceLineNo">109</span> // - handle table priorities<a name="line.109"></a>
+<span class="sourceLineNo">110</span> // - If ServerBusyException trying to update hbase:meta, we abort the Master<a name="line.110"></a>
+<span class="sourceLineNo">111</span> // See updateRegionLocation in RegionStateStore.<a name="line.111"></a>
+<span class="sourceLineNo">112</span> //<a name="line.112"></a>
+<span class="sourceLineNo">113</span> // See also<a name="line.113"></a>
+<span class="sourceLineNo">114</span> // https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.ystjyrkbtoq5<a name="line.114"></a>
+<span class="sourceLineNo">115</span> // for other TODOs.<a name="line.115"></a>
+<span class="sourceLineNo">116</span><a name="line.116"></a>
+<span class="sourceLineNo">117</span> public static final String BOOTSTRAP_THREAD_POOL_SIZE_CONF_KEY =<a name="line.117"></a>
+<span class="sourceLineNo">118</span> "hbase.assignment.bootstrap.thread.pool.size";<a name="line.118"></a>
+<span class="sourceLineNo">119</span><a name="line.119"></a>
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<span class="sourceLineNo">350</span> // ============================================================================================<a name="line.350"></a>
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+<span class="sourceLineNo">367</span><a name="line.367"></a>
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+<span class="sourceLineNo">372</span><a name="line.372"></a>
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+<span class="sourceLineNo">381</span> // TODO: handle multiple meta. if the region provided is not meta lookup<a name="line.381"></a>
+<span class="sourceLineNo">382</span> // which meta the region belongs to.<a name="line.382"></a>
+<span class="sourceLineNo">383</span> return RegionInfoBuilder.FIRST_META_REGIONINFO;<a name="line.383"></a>
+<span class="sourceLineNo">384</span> }<a name="line.384"></a>
+<span class="sourceLineNo">385</span><a name="line.385"></a>
+<span class="sourceLineNo">386</span> // TODO: handle multiple meta.<a name="line.386"></a>
+<span class="sourceLineNo">387</span> private static final Set<RegionInfo> META_REGION_SET =<a name="line.387"></a>
+<span class="sourceLineNo">388</span> Collections.singleton(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.388"></a>
+<span class="sourceLineNo">389</span> public Set<RegionInfo> getMetaRegionSet() {<a name="line.389"></a>
+<span class="sourceLineNo">390</span> return META_REGION_SET;<a name="line.390"></a>
+<span class="sourceLineNo">391</span> }<a name="line.391"></a>
+<span class="sourceLineNo">392</span><a name="line.392"></a>
+<span class="sourceLineNo">393</span> // ============================================================================================<a name="line.393"></a>
+<span class="sourceLineNo">394</span> // META Event(s) helpers<a name="line.394"></a>
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-<span class="sourceLineNo">397</span> // ============================================================================================<a name="line.397"></a>
-<span class="sourceLineNo">398</span> /**<a name="line.398"></a>
-<span class="sourceLineNo">399</span> * Notice that, this only means the meta region is available on a RS, but the AM may still be<a name="line.399"></a>
-<span class="sourceLineNo">400</span> * loading the region states from meta, so usually you need to check {@link #isMetaLoaded()} first<a name="line.400"></a>
-<span class="sourceLineNo">401</span> * before checking this method, unless you can make sure that your piece of code can only be<a name="line.401"></a>
-<span class="sourceLineNo">402</span> * executed after AM builds the region states.<a name="line.402"></a>
-<span class="sourceLineNo">403</span> * @see #isMetaLoaded()<a name="line.403"></a>
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-<span class="sourceLineNo">408</span><a name="line.408"></a>
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-<span class="sourceLineNo">412</span><a name="line.412"></a>
-<span class="sourceLineNo">413</span> /**<a name="line.413"></a>
-<span class="sourceLineNo">414</span> * Notice that this event does not mean the AM has already finished region state rebuilding. See<a name="line.414"></a>
-<span class="sourceLineNo">415</span> * the comment of {@link #isMetaAssigned()} for more details.<a name="line.415"></a>
-<span class="sourceLineNo">416</span> * @see #isMetaAssigned()<a name="line.416"></a>
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-<span class="sourceLineNo">430</span> }<a name="line.430"></a>
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-<span class="sourceLineNo">437</span><a name="line.437"></a>
-<span class="sourceLineNo">438</span> /**<a name="line.438"></a>
-<span class="sourceLineNo">439</span> * Wait until AM finishes the meta loading, i.e, the region states rebuilding.<a name="line.439"></a>
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-<span class="sourceLineNo">441</span> * @see #waitMetaAssigned(Procedure, RegionInfo)<a name="line.441"></a>
-<span class="sourceLineNo">442</span> */<a name="line.442"></a>
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-<span class="sourceLineNo">445</span> }<a name="line.445"></a>
-<span class="sourceLineNo">446</span><a name="line.446"></a>
-<span class="sourceLineNo">447</span> @VisibleForTesting<a name="line.447"></a>
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-<span class="sourceLineNo">450</span> assert isMetaLoaded() : "expected meta to be loaded";<a name="line.450"></a>
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-<span class="sourceLineNo">452</span><a name="line.452"></a>
-<span class="sourceLineNo">453</span> /**<a name="line.453"></a>
-<span class="sourceLineNo">454</span> * Return whether AM finishes the meta loading, i.e, the region states rebuilding.<a name="line.454"></a>
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-<span class="sourceLineNo">456</span> * @see #waitMetaLoaded(Procedure)<a name="line.456"></a>
-<span class="sourceLineNo">457</span> */<a name="line.457"></a>
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-<span class="sourceLineNo">461</span><a name="line.461"></a>
-<span class="sourceLineNo">462</span> /**<a name="line.462"></a>
-<span class="sourceLineNo">463</span> * Start a new thread to check if there are region servers whose versions are higher than others.<a name="line.463"></a>
-<span class="sourceLineNo">464</span> * If so, move all system table regions to RS with the highest version to keep compatibility.<a name="line.464"></a>
-<span class="sourceLineNo">465</span> * The reason is, RS in new version may not be able to access RS in old version when there are<a name="line.465"></a>
-<span class="sourceLineNo">466</span> * some incompatible changes.<a name="line.466"></a>
-<span class="sourceLineNo">467</span> * <p>This method is called when a new RegionServer is added to cluster only.</p><a name="line.467"></a>
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-<span class="sourceLineNo">469</span> public void checkIfShouldMoveSystemRegionAsync() {<a name="line.469"></a>
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-<span class="sourceLineNo">471</span> // it should 'move' the system tables from the old server to the new server but<a name="line.471"></a>
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-<span class="sourceLineNo">477</span> // childrenChanged notification came in before the nodeDeleted message and so this method<a name="line.477"></a>
-<span class="sourceLineNo">478</span> // cold run before a ServerCrashProcedure could run. That meant that this thread could see<a name="line.478"></a>
-<span class="sourceLineNo">479</span> // a Crashed Server before ServerCrashProcedure and it could find system regions on the<a name="line.479"></a>
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-<span class="sourceLineNo">481</span> // dataloss too if WALs were not recovered.<a name="line.481"></a>
-<span class="sourceLineNo">482</span> new Thread(() -> {<a name="line.482"></a>
-<span class="sourceLineNo">483</span> try {<a name="line.483"></a>
-<span class="sourceLineNo">484</span> synchronized (checkIfShouldMoveSystemRegionLock) {<a name="line.484"></a>
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-<span class="sourceLineNo">487</span> // version. It looks like it will schedule unnecessary moves.<a name="line.487"></a>
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-<span class="sourceLineNo">493</span> // ServerCrashProcedure, do NOT handle them here. The goal is to handle this through<a name="line.493"></a>
-<span class="sourceLineNo">494</span> // regular flow of LoadBalancer as a favored node and not to have this special<a name="line.494"></a>
-<span class="sourceLineNo">495</span> // handling.<a name="line.495"></a>
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-<span class="sourceLineNo">499</span> if (!regionsShouldMove.isEmpty()) {<a name="line.499"></a>
-<span class="sourceLineNo">500</span> for (RegionInfo regionInfo : regionsShouldMove) {<a name="line.500"></a>
-<span class="sourceLineNo">501</span> // null value for dest forces destination server to be selected by balancer<a name="line.501"></a>
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-<span class="sourceLineNo">503</span> if (regionInfo.isMetaRegion()) {<a name="line.503"></a>
-<span class="sourceLineNo">504</span> // Must move meta region first.<a name="line.504"></a>
-<span class="sourceLineNo">505</span> LOG.info("Async MOVE of {} to newer Server={}",<a name="line.505"></a>
-<span class="sourceLineNo">506</span> regionInfo.getEncodedName(), server);<a name="line.506"></a>
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-<span class="sourceLineNo">514</span> LOG.info("Async MOVE of {} to newer Server={}",<a name="line.514"></a>
-<span class="sourceLineNo">515</span> plan.getRegionInfo().getEncodedName(), server);<a name="line.515"></a>
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-<span class="sourceLineNo">521</span> LOG.error(t.toString(), t);<a name="line.521"></a>
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-<span class="sourceLineNo">538</span> throw new HBaseIOException(regionNode + " is currently in transition");<a name="line.538"></a>
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-<span class="sourceLineNo">544</span> TableState.State.DISABLED)) {<a name="line.544"></a>
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<TRUNCATED>