http://git-wip-us.apache.org/repos/asf/hbase-site/blob/346adc37/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
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diff --git
a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
index 7d33235..4e2ac53 100644
---
a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
+++
b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignProcedure.html
@@ -35,324 +35,335 @@
<span class="sourceLineNo">027</span>import
org.apache.commons.logging.LogFactory;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import
org.apache.hadoop.hbase.HRegionInfo;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import
org.apache.hadoop.hbase.ServerName;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import
org.apache.hadoop.hbase.client.RetriesExhaustedException;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import
org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a
name="line.32"></a>
-<span class="sourceLineNo">033</span>import
org.apache.hadoop.hbase.master.RegionState.State;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import
org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a
name="line.34"></a>
-<span class="sourceLineNo">035</span>import
org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a
name="line.35"></a>
-<span class="sourceLineNo">036</span>import
org.apache.hadoop.hbase.master.procedure.RSProcedureDispatcher.RegionOpenOperation;<a
name="line.36"></a>
-<span class="sourceLineNo">037</span>import
org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import
org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a
name="line.38"></a>
-<span class="sourceLineNo">039</span>import
org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;<a
name="line.39"></a>
-<span class="sourceLineNo">040</span>import
org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.40"></a>
-<span class="sourceLineNo">041</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.AssignRegionStateData;<a
name="line.41"></a>
-<span class="sourceLineNo">042</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a
name="line.42"></a>
-<span class="sourceLineNo">043</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a
name="line.43"></a>
-<span class="sourceLineNo">044</span><a name="line.44"></a>
-<span class="sourceLineNo">045</span>/**<a name="line.45"></a>
-<span class="sourceLineNo">046</span> * Procedure that describe the assignment
of a single region.<a name="line.46"></a>
-<span class="sourceLineNo">047</span> * There can only be one
RegionTransitionProcedure per region running at a time<a name="line.47"></a>
-<span class="sourceLineNo">048</span> * since each procedure takes a lock on
the region.<a name="line.48"></a>
-<span class="sourceLineNo">049</span> *<a name="line.49"></a>
-<span class="sourceLineNo">050</span> * <p>The Assign starts by pushing
the "assign" operation to the AssignmentManager<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * and then will go in a "waiting"
state.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> * The AM will batch the "assign"
requests and ask the Balancer where to put<a name="line.52"></a>
-<span class="sourceLineNo">053</span> * the region (the various policies will
be respected: retain, round-robin, random).<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * Once the AM and the balancer have
found a place for the region the procedure<a name="line.54"></a>
-<span class="sourceLineNo">055</span> * will be resumed and an "open region"
request will be placed in the Remote Dispatcher<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * queue, and the procedure once again
will go in a "waiting state".<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * The Remote Dispatcher will batch the
various requests for that server and<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * they will be sent to the RS for
execution.<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * The RS will complete the open
operation by calling master.reportRegionStateTransition().<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * The AM will intercept the transition
report, and notify the procedure.<a name="line.60"></a>
-<span class="sourceLineNo">061</span> * The procedure will finish the
assignment by publishing to new state on meta<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * or it will retry the assignment.<a
name="line.62"></a>
-<span class="sourceLineNo">063</span> *<a name="line.63"></a>
-<span class="sourceLineNo">064</span> * <p>This procedure does not
rollback when beyond the first<a name="line.64"></a>
-<span class="sourceLineNo">065</span> * REGION_TRANSITION_QUEUE step; it will
press on trying to assign in the face of<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * failure. Should we ignore rollback
calls to Assign/Unassign then? Or just<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * remove rollback here?<a
name="line.67"></a>
-<span class="sourceLineNo">068</span> */<a name="line.68"></a>
-<span class="sourceLineNo">069</span>@InterfaceAudience.Private<a
name="line.69"></a>
-<span class="sourceLineNo">070</span>public class AssignProcedure extends
RegionTransitionProcedure {<a name="line.70"></a>
-<span class="sourceLineNo">071</span> private static final Log LOG =
LogFactory.getLog(AssignProcedure.class);<a name="line.71"></a>
-<span class="sourceLineNo">072</span><a name="line.72"></a>
-<span class="sourceLineNo">073</span> private boolean forceNewPlan = false;<a
name="line.73"></a>
-<span class="sourceLineNo">074</span><a name="line.74"></a>
-<span class="sourceLineNo">075</span> /**<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * Gets set as desired target on move,
merge, etc., when we want to go to a particular server.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * We may not be able to respect this
request but will try. When it is NOT set, then we ask<a name="line.77"></a>
-<span class="sourceLineNo">078</span> * the balancer to assign. This value
is used below in startTransition to set regionLocation if<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * non-null. Setting regionLocation in
regionServerNode is how we override balancer setting<a name="line.79"></a>
-<span class="sourceLineNo">080</span> * destination.<a name="line.80"></a>
-<span class="sourceLineNo">081</span> */<a name="line.81"></a>
-<span class="sourceLineNo">082</span> protected volatile ServerName
targetServer;<a name="line.82"></a>
-<span class="sourceLineNo">083</span><a name="line.83"></a>
-<span class="sourceLineNo">084</span> public AssignProcedure() {<a
name="line.84"></a>
-<span class="sourceLineNo">085</span> // Required by the Procedure
framework to create the procedure on replay<a name="line.85"></a>
-<span class="sourceLineNo">086</span> super();<a name="line.86"></a>
-<span class="sourceLineNo">087</span> }<a name="line.87"></a>
-<span class="sourceLineNo">088</span><a name="line.88"></a>
-<span class="sourceLineNo">089</span> public AssignProcedure(final
HRegionInfo regionInfo) {<a name="line.89"></a>
-<span class="sourceLineNo">090</span> this(regionInfo, false);<a
name="line.90"></a>
-<span class="sourceLineNo">091</span> }<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span> public AssignProcedure(final
HRegionInfo regionInfo, final boolean forceNewPlan) {<a name="line.93"></a>
-<span class="sourceLineNo">094</span> super(regionInfo);<a
name="line.94"></a>
-<span class="sourceLineNo">095</span> this.forceNewPlan = forceNewPlan;<a
name="line.95"></a>
-<span class="sourceLineNo">096</span> this.targetServer = null;<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> public AssignProcedure(final
HRegionInfo regionInfo, final ServerName destinationServer) {<a
name="line.99"></a>
-<span class="sourceLineNo">100</span> super(regionInfo);<a
name="line.100"></a>
-<span class="sourceLineNo">101</span> this.forceNewPlan = false;<a
name="line.101"></a>
-<span class="sourceLineNo">102</span> this.targetServer =
destinationServer;<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span><a name="line.104"></a>
-<span class="sourceLineNo">105</span> @Override<a name="line.105"></a>
-<span class="sourceLineNo">106</span> public TableOperationType
getTableOperationType() {<a name="line.106"></a>
-<span class="sourceLineNo">107</span> return
TableOperationType.REGION_ASSIGN;<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> @Override<a name="line.110"></a>
-<span class="sourceLineNo">111</span> protected boolean
isRollbackSupported(final RegionTransitionState state) {<a name="line.111"></a>
-<span class="sourceLineNo">112</span> switch (state) {<a
name="line.112"></a>
-<span class="sourceLineNo">113</span> case REGION_TRANSITION_QUEUE:<a
name="line.113"></a>
-<span class="sourceLineNo">114</span> return true;<a
name="line.114"></a>
-<span class="sourceLineNo">115</span> default:<a name="line.115"></a>
-<span class="sourceLineNo">116</span> return false;<a
name="line.116"></a>
-<span class="sourceLineNo">117</span> }<a name="line.117"></a>
-<span class="sourceLineNo">118</span> }<a name="line.118"></a>
-<span class="sourceLineNo">119</span><a name="line.119"></a>
-<span class="sourceLineNo">120</span> @Override<a name="line.120"></a>
-<span class="sourceLineNo">121</span> public void serializeStateData(final
OutputStream stream) throws IOException {<a name="line.121"></a>
-<span class="sourceLineNo">122</span> final AssignRegionStateData.Builder
state = AssignRegionStateData.newBuilder()<a name="line.122"></a>
-<span class="sourceLineNo">123</span>
.setTransitionState(getTransitionState())<a name="line.123"></a>
-<span class="sourceLineNo">124</span>
.setRegionInfo(HRegionInfo.convert(getRegionInfo()));<a name="line.124"></a>
-<span class="sourceLineNo">125</span> if (forceNewPlan) {<a
name="line.125"></a>
-<span class="sourceLineNo">126</span> state.setForceNewPlan(true);<a
name="line.126"></a>
-<span class="sourceLineNo">127</span> }<a name="line.127"></a>
-<span class="sourceLineNo">128</span> if (this.targetServer != null) {<a
name="line.128"></a>
-<span class="sourceLineNo">129</span>
state.setTargetServer(ProtobufUtil.toServerName(this.targetServer));<a
name="line.129"></a>
+<span class="sourceLineNo">030</span>import
org.apache.hadoop.hbase.TableName;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import
org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import
org.apache.hadoop.hbase.client.RetriesExhaustedException;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import
org.apache.hadoop.hbase.client.TableState;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import
org.apache.hadoop.hbase.exceptions.UnexpectedStateException;<a
name="line.34"></a>
+<span class="sourceLineNo">035</span>import
org.apache.hadoop.hbase.master.RegionState.State;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import
org.apache.hadoop.hbase.master.TableStateManager;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import
org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;<a
name="line.37"></a>
+<span class="sourceLineNo">038</span>import
org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a
name="line.38"></a>
+<span class="sourceLineNo">039</span>import
org.apache.hadoop.hbase.master.procedure.RSProcedureDispatcher.RegionOpenOperation;<a
name="line.39"></a>
+<span class="sourceLineNo">040</span>import
org.apache.hadoop.hbase.procedure2.ProcedureMetrics;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import
org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a
name="line.41"></a>
+<span class="sourceLineNo">042</span>import
org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;<a
name="line.42"></a>
+<span class="sourceLineNo">043</span>import
org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.43"></a>
+<span class="sourceLineNo">044</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.AssignRegionStateData;<a
name="line.44"></a>
+<span class="sourceLineNo">045</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a
name="line.45"></a>
+<span class="sourceLineNo">046</span>import
org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a
name="line.46"></a>
+<span class="sourceLineNo">047</span><a name="line.47"></a>
+<span class="sourceLineNo">048</span>/**<a name="line.48"></a>
+<span class="sourceLineNo">049</span> * Procedure that describe the assignment
of a single region.<a name="line.49"></a>
+<span class="sourceLineNo">050</span> * There can only be one
RegionTransitionProcedure per region running at a time<a name="line.50"></a>
+<span class="sourceLineNo">051</span> * since each procedure takes a lock on
the region.<a name="line.51"></a>
+<span class="sourceLineNo">052</span> *<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * <p>The Assign starts by pushing
the "assign" operation to the AssignmentManager<a name="line.53"></a>
+<span class="sourceLineNo">054</span> * and then will go in a "waiting"
state.<a name="line.54"></a>
+<span class="sourceLineNo">055</span> * The AM will batch the "assign"
requests and ask the Balancer where to put<a name="line.55"></a>
+<span class="sourceLineNo">056</span> * the region (the various policies will
be respected: retain, round-robin, random).<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * Once the AM and the balancer have
found a place for the region the procedure<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * will be resumed and an "open region"
request will be placed in the Remote Dispatcher<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * queue, and the procedure once again
will go in a "waiting state".<a name="line.59"></a>
+<span class="sourceLineNo">060</span> * The Remote Dispatcher will batch the
various requests for that server and<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * they will be sent to the RS for
execution.<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * The RS will complete the open
operation by calling master.reportRegionStateTransition().<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * The AM will intercept the transition
report, and notify the procedure.<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * The procedure will finish the
assignment by publishing to new state on meta<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * or it will retry the assignment.<a
name="line.65"></a>
+<span class="sourceLineNo">066</span> *<a name="line.66"></a>
+<span class="sourceLineNo">067</span> * <p>This procedure does not
rollback when beyond the first<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * REGION_TRANSITION_QUEUE step; it will
press on trying to assign in the face of<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * failure. Should we ignore rollback
calls to Assign/Unassign then? Or just<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * remove rollback here?<a
name="line.70"></a>
+<span class="sourceLineNo">071</span> */<a name="line.71"></a>
+<span class="sourceLineNo">072</span>@InterfaceAudience.Private<a
name="line.72"></a>
+<span class="sourceLineNo">073</span>public class AssignProcedure extends
RegionTransitionProcedure {<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private static final Log LOG =
LogFactory.getLog(AssignProcedure.class);<a name="line.74"></a>
+<span class="sourceLineNo">075</span><a name="line.75"></a>
+<span class="sourceLineNo">076</span> private boolean forceNewPlan = false;<a
name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> /**<a name="line.78"></a>
+<span class="sourceLineNo">079</span> * Gets set as desired target on move,
merge, etc., when we want to go to a particular server.<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * We may not be able to respect this
request but will try. When it is NOT set, then we ask<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * the balancer to assign. This value
is used below in startTransition to set regionLocation if<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * non-null. Setting regionLocation in
regionServerNode is how we override balancer setting<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * destination.<a name="line.83"></a>
+<span class="sourceLineNo">084</span> */<a name="line.84"></a>
+<span class="sourceLineNo">085</span> protected volatile ServerName
targetServer;<a name="line.85"></a>
+<span class="sourceLineNo">086</span><a name="line.86"></a>
+<span class="sourceLineNo">087</span> public AssignProcedure() {<a
name="line.87"></a>
+<span class="sourceLineNo">088</span> // Required by the Procedure
framework to create the procedure on replay<a name="line.88"></a>
+<span class="sourceLineNo">089</span> super();<a name="line.89"></a>
+<span class="sourceLineNo">090</span> }<a name="line.90"></a>
+<span class="sourceLineNo">091</span><a name="line.91"></a>
+<span class="sourceLineNo">092</span> public AssignProcedure(final
HRegionInfo regionInfo) {<a name="line.92"></a>
+<span class="sourceLineNo">093</span> this(regionInfo, false);<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> public AssignProcedure(final
HRegionInfo regionInfo, final boolean forceNewPlan) {<a name="line.96"></a>
+<span class="sourceLineNo">097</span> super(regionInfo);<a
name="line.97"></a>
+<span class="sourceLineNo">098</span> this.forceNewPlan = forceNewPlan;<a
name="line.98"></a>
+<span class="sourceLineNo">099</span> this.targetServer = null;<a
name="line.99"></a>
+<span class="sourceLineNo">100</span> }<a name="line.100"></a>
+<span class="sourceLineNo">101</span><a name="line.101"></a>
+<span class="sourceLineNo">102</span> public AssignProcedure(final
HRegionInfo regionInfo, final ServerName destinationServer) {<a
name="line.102"></a>
+<span class="sourceLineNo">103</span> super(regionInfo);<a
name="line.103"></a>
+<span class="sourceLineNo">104</span> this.forceNewPlan = false;<a
name="line.104"></a>
+<span class="sourceLineNo">105</span> this.targetServer =
destinationServer;<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> @Override<a name="line.108"></a>
+<span class="sourceLineNo">109</span> public TableOperationType
getTableOperationType() {<a name="line.109"></a>
+<span class="sourceLineNo">110</span> return
TableOperationType.REGION_ASSIGN;<a name="line.110"></a>
+<span class="sourceLineNo">111</span> }<a name="line.111"></a>
+<span class="sourceLineNo">112</span><a name="line.112"></a>
+<span class="sourceLineNo">113</span> @Override<a name="line.113"></a>
+<span class="sourceLineNo">114</span> protected boolean
isRollbackSupported(final RegionTransitionState state) {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> switch (state) {<a
name="line.115"></a>
+<span class="sourceLineNo">116</span> case REGION_TRANSITION_QUEUE:<a
name="line.116"></a>
+<span class="sourceLineNo">117</span> return true;<a
name="line.117"></a>
+<span class="sourceLineNo">118</span> default:<a name="line.118"></a>
+<span class="sourceLineNo">119</span> return false;<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><a name="line.122"></a>
+<span class="sourceLineNo">123</span> @Override<a name="line.123"></a>
+<span class="sourceLineNo">124</span> public void serializeStateData(final
OutputStream stream) throws IOException {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> final AssignRegionStateData.Builder
state = AssignRegionStateData.newBuilder()<a name="line.125"></a>
+<span class="sourceLineNo">126</span>
.setTransitionState(getTransitionState())<a name="line.126"></a>
+<span class="sourceLineNo">127</span>
.setRegionInfo(HRegionInfo.convert(getRegionInfo()));<a name="line.127"></a>
+<span class="sourceLineNo">128</span> if (forceNewPlan) {<a
name="line.128"></a>
+<span class="sourceLineNo">129</span> state.setForceNewPlan(true);<a
name="line.129"></a>
<span class="sourceLineNo">130</span> }<a name="line.130"></a>
-<span class="sourceLineNo">131</span>
state.build().writeDelimitedTo(stream);<a name="line.131"></a>
-<span class="sourceLineNo">132</span> }<a name="line.132"></a>
-<span class="sourceLineNo">133</span><a name="line.133"></a>
-<span class="sourceLineNo">134</span> @Override<a name="line.134"></a>
-<span class="sourceLineNo">135</span> public void deserializeStateData(final
InputStream stream) throws IOException {<a name="line.135"></a>
-<span class="sourceLineNo">136</span> final AssignRegionStateData state =
AssignRegionStateData.parseDelimitedFrom(stream);<a name="line.136"></a>
-<span class="sourceLineNo">137</span>
setTransitionState(state.getTransitionState());<a name="line.137"></a>
-<span class="sourceLineNo">138</span>
setRegionInfo(HRegionInfo.convert(state.getRegionInfo()));<a
name="line.138"></a>
-<span class="sourceLineNo">139</span> forceNewPlan =
state.getForceNewPlan();<a name="line.139"></a>
-<span class="sourceLineNo">140</span> if (state.hasTargetServer()) {<a
name="line.140"></a>
-<span class="sourceLineNo">141</span> this.targetServer =
ProtobufUtil.toServerName(state.getTargetServer());<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><a name="line.144"></a>
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state.build().writeDelimitedTo(stream);<a name="line.134"></a>
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InputStream stream) throws IOException {<a name="line.138"></a>
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AssignRegionStateData.parseDelimitedFrom(stream);<a name="line.139"></a>
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setTransitionState(state.getTransitionState());<a name="line.140"></a>
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setRegionInfo(HRegionInfo.convert(state.getRegionInfo()));<a
name="line.141"></a>
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state.getForceNewPlan();<a name="line.142"></a>
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name="line.143"></a>
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ProtobufUtil.toServerName(state.getTargetServer());<a name="line.144"></a>
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+<span class="sourceLineNo">146</span> }<a name="line.146"></a>
+<span class="sourceLineNo">147</span><a name="line.147"></a>
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MasterProcedureEnv env, final RegionStateNode regionNode)<a name="line.149"></a>
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name="line.150"></a>
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&& isServerOnline(env, regionNode)) {<a name="line.152"></a>
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reassigning; " + this + "; " + regionNode.toShortString());<a
name="line.153"></a>
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TableState.State.DISABLING, TableState.State.DISABLED)) {<a name="line.159"></a>
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+ tsm.getTableState(tn) + ", skipping " + this);<a name="line.160"></a>
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(regionNode.getRegionInfo().isOffline() &&
regionNode.getRegionInfo().isSplit())) {<a name="line.166"></a>
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regionNode.getRegionInfo());<a name="line.168"></a>
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(incrementAndCheckMaxAttempts(env, regionNode)) {<a name="line.174"></a>
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setFailure(getClass().getSimpleName(),<a name="line.176"></a>
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RetriesExhaustedException("Max attempts exceeded"));<a name="line.177"></a>
+<span class="sourceLineNo">178</span> } else {<a name="line.178"></a>
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setAbortFailure(getClass().getSimpleName(), "Abort requested");<a
name="line.179"></a>
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assign-pool). Region is now in OFFLINE state. Setting offline state<a
name="line.184"></a>
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location. Setting a new regionLocation here is how we retain<a
name="line.185"></a>
+<span class="sourceLineNo">186</span> // old assignment or specify target
server if a move or merge. See<a name="line.186"></a>
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AssignmentManager#processAssignQueue. Otherwise, balancer gives us location.<a
name="line.187"></a>
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regionNode.offline();<a name="line.188"></a>
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name="line.189"></a>
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name="line.190"></a>
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name="line.191"></a>
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targetServer.equals(lastRegionLocation);<a name="line.192"></a>
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regionNode.setRegionLocation(targetServer);<a name="line.193"></a>
+<span class="sourceLineNo">194</span> } else {<a name="line.194"></a>
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{<a name="line.195"></a>
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had before we offlined.<a name="line.196"></a>
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name="line.197"></a>
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regionNode.setRegionLocation(lastRegionLocation);<a name="line.198"></a>
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regionNode.toShortString() +<a name="line.202"></a>
+<span class="sourceLineNo">203</span> "; forceNewPlan=" +
this.forceNewPlan +<a name="line.203"></a>
+<span class="sourceLineNo">204</span> ", retain=" + retain);<a
name="line.204"></a>
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env.getAssignmentManager().queueAssign(regionNode);<a name="line.205"></a>
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+<span class="sourceLineNo">209</span> @Override<a name="line.209"></a>
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updateTransition(final MasterProcedureEnv env, final RegionStateNode
regionNode)<a name="line.210"></a>
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ProcedureSuspendedException {<a name="line.211"></a>
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is specified and not online<a name="line.212"></a>
+<span class="sourceLineNo">213</span> // which is also the case when the
balancer provided us with a different location.<a name="line.213"></a>
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name="line.214"></a>
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regionNode.toShortString());<a name="line.215"></a>
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null) {<a name="line.217"></a>
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setTransitionState(RegionTransitionState.REGION_TRANSITION_QUEUE);<a
name="line.218"></a>
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+<span class="sourceLineNo">220</span> }<a name="line.220"></a>
+<span class="sourceLineNo">221</span><a name="line.221"></a>
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{<a name="line.222"></a>
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wait the chore/ssh?<a name="line.223"></a>
+<span class="sourceLineNo">224</span> LOG.info("Server not online,
re-queuing " + this + "; " + regionNode.toShortString());<a name="line.224"></a>
+<span class="sourceLineNo">225</span>
setTransitionState(RegionTransitionState.REGION_TRANSITION_QUEUE);<a
name="line.225"></a>
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<span class="sourceLineNo">227</span> }<a name="line.227"></a>
<span class="sourceLineNo">228</span><a name="line.228"></a>
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env.getAssignmentManager().markRegionAsOpening(regionNode);<a
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on the scheduler.<a name="line.240"></a>
-<span class="sourceLineNo">241</span> }<a name="line.241"></a>
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(env.getAssignmentManager().waitServerReportEvent(regionNode.getRegionLocation(),
this)) {<a name="line.229"></a>
+<span class="sourceLineNo">230</span> LOG.info("Early suspend! " + this +
"; " + regionNode.toShortString());<a name="line.230"></a>
+<span class="sourceLineNo">231</span> throw new
ProcedureSuspendedException();<a name="line.231"></a>
+<span class="sourceLineNo">232</span> }<a name="line.232"></a>
+<span class="sourceLineNo">233</span><a name="line.233"></a>
+<span class="sourceLineNo">234</span> if (regionNode.isInState(State.OPEN))
{<a name="line.234"></a>
+<span class="sourceLineNo">235</span> LOG.info("Already assigned: " +
this + "; " + regionNode.toShortString());<a name="line.235"></a>
+<span class="sourceLineNo">236</span> return false;<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>
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it to OPENING. Update hbase:meta, and add<a name="line.239"></a>
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target regionserver. Need to UNDO if failure!<a name="line.240"></a>
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env.getAssignmentManager().markRegionAsOpening(regionNode);<a
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<span class="sourceLineNo">242</span><a name="line.242"></a>
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env.getAssignmentManager().getRegionStates().removeFromFailedOpen(regionNode.getRegionInfo());<a
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long openSeqNum) throws UnexpectedStateException {<a name="line.260"></a>
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regionNode.getOpenSeqNum()) {<a name="line.267"></a>
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+ regionNode.getOpenSeqNum());<a name="line.269"></a>
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setTransitionState(RegionTransitionState.REGION_TRANSITION_FINISH);<a
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to OFFLINE and put our Procedure<a name="line.290"></a>
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MasterProcedureEnv env, final RegionStateNode regionNode) {<a
name="line.293"></a>
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regionNode)) {<a name="line.294"></a>
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name="line.295"></a>
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OPENING first.<a name="line.301"></a>
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env.getAssignmentManager().undoRegionAsOpening(regionNode);<a
name="line.302"></a>
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setTransitionState(RegionTransitionState.REGION_TRANSITION_QUEUE);<a
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name="line.306"></a>
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{<a name="line.307"></a>
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env.getAssignmentManager().getRegionStates().<a name="line.308"></a>
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addToFailedOpen(regionNode).incrementAndGetRetries();<a name="line.309"></a>
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env.getAssignmentManager().getAssignMaxAttempts();<a name="line.310"></a>
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max=" + max + "; " +<a name="line.311"></a>
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regionNode.toShortString());<a name="line.312"></a>
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name="line.313"></a>
+<span class="sourceLineNo">243</span> // TODO: Requires a migration to be
open by the RS?<a name="line.243"></a>
+<span class="sourceLineNo">244</span> // regionNode.getFormatVersion()<a
name="line.244"></a>
+<span class="sourceLineNo">245</span><a name="line.245"></a>
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regionNode.getRegionLocation())) {<a name="line.246"></a>
+<span class="sourceLineNo">247</span> // Failed the dispatch BUT
addToRemoteDispatcher internally does<a name="line.247"></a>
+<span class="sourceLineNo">248</span> // cleanup on failure -- even the
undoing of markRegionAsOpening above --<a name="line.248"></a>
+<span class="sourceLineNo">249</span> // so nothing more to do here; in
fact we need to get out of here<a name="line.249"></a>
+<span class="sourceLineNo">250</span> // fast since we've been put back
on the scheduler.<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> // We always return true, even if we
fail dispatch because addToRemoteDispatcher<a name="line.253"></a>
+<span class="sourceLineNo">254</span> // failure processing sets state back
to REGION_TRANSITION_QUEUE so we try again;<a name="line.254"></a>
+<span class="sourceLineNo">255</span> // i.e. return true to keep the
Procedure running; it has been reset to startover.<a name="line.255"></a>
+<span class="sourceLineNo">256</span> return true;<a name="line.256"></a>
+<span class="sourceLineNo">257</span> }<a name="line.257"></a>
+<span class="sourceLineNo">258</span><a name="line.258"></a>
+<span class="sourceLineNo">259</span> @Override<a name="line.259"></a>
+<span class="sourceLineNo">260</span> protected void finishTransition(final
MasterProcedureEnv env, final RegionStateNode regionNode)<a name="line.260"></a>
+<span class="sourceLineNo">261</span> throws IOException {<a
name="line.261"></a>
+<span class="sourceLineNo">262</span>
env.getAssignmentManager().markRegionAsOpened(regionNode);<a
name="line.262"></a>
+<span class="sourceLineNo">263</span> // This success may have been after
we failed open a few times. Be sure to cleanup any<a name="line.263"></a>
+<span class="sourceLineNo">264</span> // failed open references. See
#incrementAndCheckMaxAttempts and where it is called.<a name="line.264"></a>
+<span class="sourceLineNo">265</span>
env.getAssignmentManager().getRegionStates().removeFromFailedOpen(regionNode.getRegionInfo());<a
name="line.265"></a>
+<span class="sourceLineNo">266</span> }<a name="line.266"></a>
+<span class="sourceLineNo">267</span><a name="line.267"></a>
+<span class="sourceLineNo">268</span> @Override<a name="line.268"></a>
+<span class="sourceLineNo">269</span> protected void reportTransition(final
MasterProcedureEnv env, final RegionStateNode regionNode,<a name="line.269"></a>
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long openSeqNum) throws UnexpectedStateException {<a name="line.270"></a>
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+<span class="sourceLineNo">272</span> case OPENED:<a name="line.272"></a>
+<span class="sourceLineNo">273</span> if (openSeqNum < 0) {<a
name="line.273"></a>
+<span class="sourceLineNo">274</span> throw new
UnexpectedStateException("Received report unexpected " + code +<a
name="line.274"></a>
+<span class="sourceLineNo">275</span> " transition openSeqNum=" +
openSeqNum + ", " + regionNode);<a name="line.275"></a>
+<span class="sourceLineNo">276</span> }<a name="line.276"></a>
+<span class="sourceLineNo">277</span> if (openSeqNum <
regionNode.getOpenSeqNum()) {<a name="line.277"></a>
+<span class="sourceLineNo">278</span> LOG.warn("Skipping update of
open seqnum with " + openSeqNum +<a name="line.278"></a>
+<span class="sourceLineNo">279</span> " because current seqnum="
+ regionNode.getOpenSeqNum());<a name="line.279"></a>
+<span class="sourceLineNo">280</span> }<a name="line.280"></a>
+<span class="sourceLineNo">281</span>
regionNode.setOpenSeqNum(openSeqNum);<a name="line.281"></a>
+<span class="sourceLineNo">282</span> // Leave the state here as
OPENING for now. We set it to OPEN in<a name="line.282"></a>
+<span class="sourceLineNo">283</span> // REGION_TRANSITION_FINISH
section where we do a bunch of checks.<a name="line.283"></a>
+<span class="sourceLineNo">284</span> //
regionNode.setState(RegionState.State.OPEN, RegionState.State.OPENING);<a
name="line.284"></a>
+<span class="sourceLineNo">285</span>
setTransitionState(RegionTransitionState.REGION_TRANSITION_FINISH);<a
name="line.285"></a>
+<span class="sourceLineNo">286</span> break;<a name="line.286"></a>
+<span class="sourceLineNo">287</span> case FAILED_OPEN:<a
name="line.287"></a>
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name="line.288"></a>
+<span class="sourceLineNo">289</span> break;<a name="line.289"></a>
+<span class="sourceLineNo">290</span> default:<a name="line.290"></a>
+<span class="sourceLineNo">291</span> throw new
UnexpectedStateException("Received report unexpected " + code +<a
name="line.291"></a>
+<span class="sourceLineNo">292</span> " transition openSeqNum=" +
openSeqNum + ", " + regionNode.toShortString() +<a name="line.292"></a>
+<span class="sourceLineNo">293</span> ", " + this + ", expected
OPENED or FAILED_OPEN.");<a name="line.293"></a>
+<span class="sourceLineNo">294</span> }<a name="line.294"></a>
+<span class="sourceLineNo">295</span> }<a name="line.295"></a>
+<span class="sourceLineNo">296</span><a name="line.296"></a>
+<span class="sourceLineNo">297</span> /**<a name="line.297"></a>
+<span class="sourceLineNo">298</span> * Called when dispatch or subsequent
OPEN request fail. Can be run by the<a name="line.298"></a>
+<span class="sourceLineNo">299</span> * inline dispatch call or later by the
ServerCrashProcedure. Our state is<a name="line.299"></a>
+<span class="sourceLineNo">300</span> * generally OPENING. Cleanup and reset
to OFFLINE and put our Procedure<a name="line.300"></a>
+<span class="sourceLineNo">301</span> * State back to
REGION_TRANSITION_QUEUE so the Assign starts over.<a name="line.301"></a>
+<span class="sourceLineNo">302</span> */<a name="line.302"></a>
+<span class="sourceLineNo">303</span> private void handleFailure(final
MasterProcedureEnv env, final RegionStateNode regionNode) {<a
name="line.303"></a>
+<span class="sourceLineNo">304</span> if (incrementAndCheckMaxAttempts(env,
regionNode)) {<a name="line.304"></a>
+<span class="sourceLineNo">305</span> aborted.set(true);<a
name="line.305"></a>
+<span class="sourceLineNo">306</span> }<a name="line.306"></a>
+<span class="sourceLineNo">307</span> this.forceNewPlan = true;<a
name="line.307"></a>
+<span class="sourceLineNo">308</span> this.targetServer = null;<a
name="line.308"></a>
+<span class="sourceLineNo">309</span> regionNode.offline();<a
name="line.309"></a>
+<span class="sourceLineNo">310</span> // We were moved to OPENING state
before dispatch. Undo. It is safe to call<a name="line.310"></a>
+<span class="sourceLineNo">311</span> // this method because it checks for
OPENING first.<a name="line.311"></a>
+<span class="sourceLineNo">312</span>
env.getAssignmentManager().undoRegionAsOpening(regionNode);<a
name="line.312"></a>
+<span class="sourceLineNo">313</span>
setTransitionState(RegionTransitionState.REGION_TRANSITION_QUEUE);<a
name="line.313"></a>
<span class="sourceLineNo">314</span> }<a name="line.314"></a>
<span class="sourceLineNo">315</span><a name="line.315"></a>
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name="line.318"></a>
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env.getAssignmentManager().getFavoredNodes(getRegionInfo()), false);<a
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MasterProcedureEnv env, final RegionStateNode regionNode,<a name="line.324"></a>
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name="line.325"></a>
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name="line.331"></a>
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sb.append(", target=").append(this.targetServer);<a name="line.332"></a>
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name="line.337"></a>
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env.getAssignmentManager().getRegionStates().getRegionNode(this.getRegionInfo());<a
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env.getAssignmentManager().getAssignmentManagerMetrics().getAssignProcMetrics();<a
name="line.345"></a>
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+<span class="sourceLineNo">316</span> private boolean
incrementAndCheckMaxAttempts(final MasterProcedureEnv env,<a
name="line.316"></a>
+<span class="sourceLineNo">317</span> final RegionStateNode regionNode)
{<a name="line.317"></a>
+<span class="sourceLineNo">318</span> final int retries =
env.getAssignmentManager().getRegionStates().<a name="line.318"></a>
+<span class="sourceLineNo">319</span>
addToFailedOpen(regionNode).incrementAndGetRetries();<a name="line.319"></a>
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env.getAssignmentManager().getAssignMaxAttempts();<a name="line.320"></a>
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max=" + max + "; " +<a name="line.321"></a>
+<span class="sourceLineNo">322</span> this + "; " +
regionNode.toShortString());<a name="line.322"></a>
+<span class="sourceLineNo">323</span> return retries >= max;<a
name="line.323"></a>
+<span class="sourceLineNo">324</span> }<a name="line.324"></a>
+<span class="sourceLineNo">325</span><a name="line.325"></a>
+<span class="sourceLineNo">326</span> @Override<a name="line.326"></a>
+<span class="sourceLineNo">327</span> public RemoteOperation
remoteCallBuild(final MasterProcedureEnv env, final ServerName serverName) {<a
name="line.327"></a>
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serverName.equals(getRegionState(env).getRegionLocation());<a
name="line.328"></a>
+<span class="sourceLineNo">329</span> return new RegionOpenOperation(this,
getRegionInfo(),<a name="line.329"></a>
+<span class="sourceLineNo">330</span>
env.getAssignmentManager().getFavoredNodes(getRegionInfo()), false);<a
name="line.330"></a>
+<span class="sourceLineNo">331</span> }<a name="line.331"></a>
+<span class="sourceLineNo">332</span><a name="line.332"></a>
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+<span class="sourceLineNo">334</span> protected boolean
remoteCallFailed(final MasterProcedureEnv env, final RegionStateNode
regionNode,<a name="line.334"></a>
+<span class="sourceLineNo">335</span> final IOException exception) {<a
name="line.335"></a>
+<span class="sourceLineNo">336</span> handleFailure(env, regionNode);<a
name="line.336"></a>
+<span class="sourceLineNo">337</span> return true;<a name="line.337"></a>
+<span class="sourceLineNo">338</span> }<a name="line.338"></a>
+<span class="sourceLineNo">339</span><a name="line.339"></a>
+<span class="sourceLineNo">340</span> @Override<a name="line.340"></a>
+<span class="sourceLineNo">341</span> public void
toStringClassDetails(StringBuilder sb) {<a name="line.341"></a>
+<span class="sourceLineNo">342</span> super.toStringClassDetails(sb);<a
name="line.342"></a>
+<span class="sourceLineNo">343</span> if (this.targetServer != null)
sb.append(", target=").append(this.targetServer);<a name="line.343"></a>
+<span class="sourceLineNo">344</span> }<a name="line.344"></a>
+<span class="sourceLineNo">345</span><a name="line.345"></a>
+<span class="sourceLineNo">346</span> @Override<a name="line.346"></a>
+<span class="sourceLineNo">347</span> public ServerName getServer(final
MasterProcedureEnv env) {<a name="line.347"></a>
+<span class="sourceLineNo">348</span> RegionStateNode node =<a
name="line.348"></a>
+<span class="sourceLineNo">349</span>
env.getAssignmentManager().getRegionStates().getRegionNode(this.getRegionInfo());<a
name="line.349"></a>
+<span class="sourceLineNo">350</span> if (node == null) return null;<a
name="line.350"></a>
+<span class="sourceLineNo">351</span> return node.getRegionLocation();<a
name="line.351"></a>
+<span class="sourceLineNo">352</span> }<a name="line.352"></a>
+<span class="sourceLineNo">353</span><a name="line.353"></a>
+<span class="sourceLineNo">354</span> @Override<a name="line.354"></a>
+<span class="sourceLineNo">355</span> protected ProcedureMetrics
getProcedureMetrics(MasterProcedureEnv env) {<a name="line.355"></a>
+<span class="sourceLineNo">356</span> return
env.getAssignmentManager().getAssignmentManagerMetrics().getAssignProcMetrics();<a
name="line.356"></a>
+<span class="sourceLineNo">357</span> }<a name="line.357"></a>
+<span class="sourceLineNo">358</span>}<a name="line.358"></a>
