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From git-site-r...@apache.org
Subject [10/24] hbase-site git commit: Published site at 7790ab156eabbea4527ec8e5a1c39430398bed0c.
Date Tue, 01 May 2018 14:47:23 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/40477ee9/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionTransitionProcedure.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionTransitionProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionTransitionProcedure.html
index 19e4a1b..fa83152 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionTransitionProcedure.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/RegionTransitionProcedure.html
@@ -36,400 +36,469 @@
 <span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;<a name="line.28"></a>
 <span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.master.procedure.TableProcedureInterface;<a name="line.29"></a>
 <span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.procedure2.Procedure;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteProcedure;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureException;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.slf4j.Logger;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.slf4j.LoggerFactory;<a name="line.37"></a>
-<span class="sourceLineNo">038</span><a name="line.38"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.procedure2.ProcedureSuspendedException;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteOperation;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureDispatcher.RemoteProcedure;<a name="line.34"></a>
+<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.procedure2.RemoteProcedureException;<a name="line.35"></a>
+<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.38"></a>
 <span class="sourceLineNo">039</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.39"></a>
-<span class="sourceLineNo">040</span><a name="line.40"></a>
-<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a name="line.41"></a>
-<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.42"></a>
+<span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.40"></a>
+<span class="sourceLineNo">041</span>import org.slf4j.Logger;<a name="line.41"></a>
+<span class="sourceLineNo">042</span>import org.slf4j.LoggerFactory;<a name="line.42"></a>
 <span class="sourceLineNo">043</span><a name="line.43"></a>
-<span class="sourceLineNo">044</span>/**<a name="line.44"></a>
-<span class="sourceLineNo">045</span> * Base class for the Assign and Unassign Procedure.<a name="line.45"></a>
-<span class="sourceLineNo">046</span> *<a name="line.46"></a>
-<span class="sourceLineNo">047</span> * Locking:<a name="line.47"></a>
-<span class="sourceLineNo">048</span> * Takes exclusive lock on the region being assigned/unassigned. Thus, there can only be one<a name="line.48"></a>
-<span class="sourceLineNo">049</span> * RegionTransitionProcedure per region running at a time (see MasterProcedureScheduler).<a name="line.49"></a>
-<span class="sourceLineNo">050</span> *<a name="line.50"></a>
-<span class="sourceLineNo">051</span> * &lt;p&gt;This procedure is asynchronous and responds to external events.<a name="line.51"></a>
-<span class="sourceLineNo">052</span> * The AssignmentManager will notify this procedure when the RS completes<a name="line.52"></a>
-<span class="sourceLineNo">053</span> * the operation and reports the transitioned state<a name="line.53"></a>
-<span class="sourceLineNo">054</span> * (see the Assign and Unassign class for more detail).&lt;/p&gt;<a name="line.54"></a>
+<span class="sourceLineNo">044</span>import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;<a name="line.44"></a>
+<span class="sourceLineNo">045</span><a name="line.45"></a>
+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.RegionTransitionState;<a name="line.46"></a>
+<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;<a name="line.47"></a>
+<span class="sourceLineNo">048</span><a name="line.48"></a>
+<span class="sourceLineNo">049</span>/**<a name="line.49"></a>
+<span class="sourceLineNo">050</span> * Base class for the Assign and Unassign Procedure.<a name="line.50"></a>
+<span class="sourceLineNo">051</span> *<a name="line.51"></a>
+<span class="sourceLineNo">052</span> * Locking:<a name="line.52"></a>
+<span class="sourceLineNo">053</span> * Takes exclusive lock on the region being assigned/unassigned. Thus, there can only be one<a name="line.53"></a>
+<span class="sourceLineNo">054</span> * RegionTransitionProcedure per region running at a time (see MasterProcedureScheduler).<a name="line.54"></a>
 <span class="sourceLineNo">055</span> *<a name="line.55"></a>
-<span class="sourceLineNo">056</span> * &lt;p&gt;Procedures move from the REGION_TRANSITION_QUEUE state when they are<a name="line.56"></a>
-<span class="sourceLineNo">057</span> * first submitted, to the REGION_TRANSITION_DISPATCH state when the request<a name="line.57"></a>
-<span class="sourceLineNo">058</span> * to remote server is sent and the Procedure is suspended waiting on external<a name="line.58"></a>
-<span class="sourceLineNo">059</span> * event to be woken again. Once the external event is triggered, Procedure<a name="line.59"></a>
-<span class="sourceLineNo">060</span> * moves to the REGION_TRANSITION_FINISH state.&lt;/p&gt;<a name="line.60"></a>
-<span class="sourceLineNo">061</span> *<a name="line.61"></a>
-<span class="sourceLineNo">062</span> * &lt;p&gt;NOTE: {@link AssignProcedure} and {@link UnassignProcedure} should not be thought of<a name="line.62"></a>
-<span class="sourceLineNo">063</span> * as being asymmetric, at least currently.<a name="line.63"></a>
-<span class="sourceLineNo">064</span> * &lt;ul&gt;<a name="line.64"></a>
-<span class="sourceLineNo">065</span> * &lt;li&gt;{@link AssignProcedure} moves through all the above described states and implements methods<a name="line.65"></a>
-<span class="sourceLineNo">066</span> * associated with each while {@link UnassignProcedure} starts at state<a name="line.66"></a>
-<span class="sourceLineNo">067</span> * REGION_TRANSITION_DISPATCH and state REGION_TRANSITION_QUEUE is not supported.&lt;/li&gt;<a name="line.67"></a>
-<span class="sourceLineNo">068</span> *<a name="line.68"></a>
-<span class="sourceLineNo">069</span> * &lt;li&gt;When any step in {@link AssignProcedure} fails, failure handler<a name="line.69"></a>
-<span class="sourceLineNo">070</span> * AssignProcedure#handleFailure(MasterProcedureEnv, RegionStateNode) re-attempts the<a name="line.70"></a>
-<span class="sourceLineNo">071</span> * assignment by setting the procedure state to REGION_TRANSITION_QUEUE and forces<a name="line.71"></a>
-<span class="sourceLineNo">072</span> * assignment to a different target server by setting {@link AssignProcedure#forceNewPlan}. When<a name="line.72"></a>
-<span class="sourceLineNo">073</span> * the number of attempts reaches threshold configuration 'hbase.assignment.maximum.attempts',<a name="line.73"></a>
-<span class="sourceLineNo">074</span> * the procedure is aborted. For {@link UnassignProcedure}, similar re-attempts are<a name="line.74"></a>
-<span class="sourceLineNo">075</span> * intentionally not implemented. It is a 'one shot' procedure. See its class doc for how it<a name="line.75"></a>
-<span class="sourceLineNo">076</span> * handles failure.<a name="line.76"></a>
-<span class="sourceLineNo">077</span> * &lt;/li&gt;<a name="line.77"></a>
-<span class="sourceLineNo">078</span> * &lt;/ul&gt;<a name="line.78"></a>
-<span class="sourceLineNo">079</span> * &lt;/p&gt;<a name="line.79"></a>
-<span class="sourceLineNo">080</span> *<a name="line.80"></a>
-<span class="sourceLineNo">081</span> * &lt;p&gt;TODO: Considering it is a priority doing all we can to get make a region available as soon as possible,<a name="line.81"></a>
-<span class="sourceLineNo">082</span> * re-attempting with any target makes sense if specified target fails in case of<a name="line.82"></a>
-<span class="sourceLineNo">083</span> * {@link AssignProcedure}. For {@link UnassignProcedure}, our concern is preventing data loss<a name="line.83"></a>
-<span class="sourceLineNo">084</span> * on failed unassign. See class doc for explanation.<a name="line.84"></a>
-<span class="sourceLineNo">085</span> */<a name="line.85"></a>
-<span class="sourceLineNo">086</span>@InterfaceAudience.Private<a name="line.86"></a>
-<span class="sourceLineNo">087</span>public abstract class RegionTransitionProcedure<a name="line.87"></a>
-<span class="sourceLineNo">088</span>    extends Procedure&lt;MasterProcedureEnv&gt;<a name="line.88"></a>
-<span class="sourceLineNo">089</span>    implements TableProcedureInterface,<a name="line.89"></a>
-<span class="sourceLineNo">090</span>      RemoteProcedure&lt;MasterProcedureEnv, ServerName&gt; {<a name="line.90"></a>
-<span class="sourceLineNo">091</span>  private static final Logger LOG = LoggerFactory.getLogger(RegionTransitionProcedure.class);<a name="line.91"></a>
-<span class="sourceLineNo">092</span><a name="line.92"></a>
-<span class="sourceLineNo">093</span>  protected final AtomicBoolean aborted = new AtomicBoolean(false);<a name="line.93"></a>
-<span class="sourceLineNo">094</span><a name="line.94"></a>
-<span class="sourceLineNo">095</span>  private RegionTransitionState transitionState = RegionTransitionState.REGION_TRANSITION_QUEUE;<a name="line.95"></a>
-<span class="sourceLineNo">096</span>  private RegionInfo regionInfo;<a name="line.96"></a>
-<span class="sourceLineNo">097</span>  private volatile boolean lock = false;<a name="line.97"></a>
-<span class="sourceLineNo">098</span><a name="line.98"></a>
-<span class="sourceLineNo">099</span>  // Required by the Procedure framework to create the procedure on replay<a name="line.99"></a>
-<span class="sourceLineNo">100</span>  public RegionTransitionProcedure() {}<a name="line.100"></a>
-<span class="sourceLineNo">101</span><a name="line.101"></a>
-<span class="sourceLineNo">102</span>  public RegionTransitionProcedure(final RegionInfo regionInfo) {<a name="line.102"></a>
-<span class="sourceLineNo">103</span>    this.regionInfo = regionInfo;<a name="line.103"></a>
-<span class="sourceLineNo">104</span>  }<a name="line.104"></a>
-<span class="sourceLineNo">105</span><a name="line.105"></a>
-<span class="sourceLineNo">106</span>  @VisibleForTesting<a name="line.106"></a>
-<span class="sourceLineNo">107</span>  public RegionInfo getRegionInfo() {<a name="line.107"></a>
-<span class="sourceLineNo">108</span>    return regionInfo;<a name="line.108"></a>
-<span class="sourceLineNo">109</span>  }<a name="line.109"></a>
-<span class="sourceLineNo">110</span><a name="line.110"></a>
-<span class="sourceLineNo">111</span>  protected void setRegionInfo(final RegionInfo regionInfo) {<a name="line.111"></a>
-<span class="sourceLineNo">112</span>    // Setter is for deserialization.<a name="line.112"></a>
-<span class="sourceLineNo">113</span>    this.regionInfo = regionInfo;<a name="line.113"></a>
-<span class="sourceLineNo">114</span>  }<a name="line.114"></a>
-<span class="sourceLineNo">115</span><a name="line.115"></a>
-<span class="sourceLineNo">116</span>  @Override<a name="line.116"></a>
-<span class="sourceLineNo">117</span>  public TableName getTableName() {<a name="line.117"></a>
-<span class="sourceLineNo">118</span>    RegionInfo hri = getRegionInfo();<a name="line.118"></a>
-<span class="sourceLineNo">119</span>    return hri != null? hri.getTable(): null;<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>  public boolean isMeta() {<a name="line.122"></a>
-<span class="sourceLineNo">123</span>    return TableName.isMetaTableName(getTableName());<a name="line.123"></a>
-<span class="sourceLineNo">124</span>  }<a name="line.124"></a>
+<span class="sourceLineNo">056</span> * &lt;p&gt;This procedure is asynchronous and responds to external events.<a name="line.56"></a>
+<span class="sourceLineNo">057</span> * The AssignmentManager will notify this procedure when the RS completes<a name="line.57"></a>
+<span class="sourceLineNo">058</span> * the operation and reports the transitioned state<a name="line.58"></a>
+<span class="sourceLineNo">059</span> * (see the Assign and Unassign class for more detail).&lt;/p&gt;<a name="line.59"></a>
+<span class="sourceLineNo">060</span> *<a name="line.60"></a>
+<span class="sourceLineNo">061</span> * &lt;p&gt;Procedures move from the REGION_TRANSITION_QUEUE state when they are<a name="line.61"></a>
+<span class="sourceLineNo">062</span> * first submitted, to the REGION_TRANSITION_DISPATCH state when the request<a name="line.62"></a>
+<span class="sourceLineNo">063</span> * to remote server is sent and the Procedure is suspended waiting on external<a name="line.63"></a>
+<span class="sourceLineNo">064</span> * event to be woken again. Once the external event is triggered, Procedure<a name="line.64"></a>
+<span class="sourceLineNo">065</span> * moves to the REGION_TRANSITION_FINISH state.&lt;/p&gt;<a name="line.65"></a>
+<span class="sourceLineNo">066</span> *<a name="line.66"></a>
+<span class="sourceLineNo">067</span> * &lt;p&gt;NOTE: {@link AssignProcedure} and {@link UnassignProcedure} should not be thought of<a name="line.67"></a>
+<span class="sourceLineNo">068</span> * as being asymmetric, at least currently.<a name="line.68"></a>
+<span class="sourceLineNo">069</span> * &lt;ul&gt;<a name="line.69"></a>
+<span class="sourceLineNo">070</span> * &lt;li&gt;{@link AssignProcedure} moves through all the above described states and implements methods<a name="line.70"></a>
+<span class="sourceLineNo">071</span> * associated with each while {@link UnassignProcedure} starts at state<a name="line.71"></a>
+<span class="sourceLineNo">072</span> * REGION_TRANSITION_DISPATCH and state REGION_TRANSITION_QUEUE is not supported.&lt;/li&gt;<a name="line.72"></a>
+<span class="sourceLineNo">073</span> *<a name="line.73"></a>
+<span class="sourceLineNo">074</span> * &lt;li&gt;When any step in {@link AssignProcedure} fails, failure handler<a name="line.74"></a>
+<span class="sourceLineNo">075</span> * AssignProcedure#handleFailure(MasterProcedureEnv, RegionStateNode) re-attempts the<a name="line.75"></a>
+<span class="sourceLineNo">076</span> * assignment by setting the procedure state to REGION_TRANSITION_QUEUE and forces<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * assignment to a different target server by setting {@link AssignProcedure#forceNewPlan}. When<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * the number of attempts reaches threshold configuration 'hbase.assignment.maximum.attempts',<a name="line.78"></a>
+<span class="sourceLineNo">079</span> * the procedure is aborted. For {@link UnassignProcedure}, similar re-attempts are<a name="line.79"></a>
+<span class="sourceLineNo">080</span> * intentionally not implemented. It is a 'one shot' procedure. See its class doc for how it<a name="line.80"></a>
+<span class="sourceLineNo">081</span> * handles failure.<a name="line.81"></a>
+<span class="sourceLineNo">082</span> * &lt;/li&gt;<a name="line.82"></a>
+<span class="sourceLineNo">083</span> * &lt;li&gt;If we find a region in an 'unexpected' state, we'll complain and retry with backoff forever.<a name="line.83"></a>
+<span class="sourceLineNo">084</span> * The 'unexpected' state needs to be fixed either by another running Procedure or by operator<a name="line.84"></a>
+<span class="sourceLineNo">085</span> * intervention (Regions in 'unexpected' state indicates bug or unexpected transition type).<a name="line.85"></a>
+<span class="sourceLineNo">086</span> * For this to work, subclasses need to persist the 'attempt' counter kept in this class when<a name="line.86"></a>
+<span class="sourceLineNo">087</span> * they do serializeStateData and restore it inside their deserializeStateData, just as they do<a name="line.87"></a>
+<span class="sourceLineNo">088</span> * for {@link #regionInfo}.<a name="line.88"></a>
+<span class="sourceLineNo">089</span> * &lt;/li&gt;<a name="line.89"></a>
+<span class="sourceLineNo">090</span> * &lt;/ul&gt;<a name="line.90"></a>
+<span class="sourceLineNo">091</span> * &lt;/p&gt;<a name="line.91"></a>
+<span class="sourceLineNo">092</span> *<a name="line.92"></a>
+<span class="sourceLineNo">093</span> * &lt;p&gt;TODO: Considering it is a priority doing all we can to get make a region available as soon as<a name="line.93"></a>
+<span class="sourceLineNo">094</span> * possible, re-attempting with any target makes sense if specified target fails in case of<a name="line.94"></a>
+<span class="sourceLineNo">095</span> * {@link AssignProcedure}. For {@link UnassignProcedure}, our concern is preventing data loss<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * on failed unassign. See class doc for explanation.<a name="line.96"></a>
+<span class="sourceLineNo">097</span> */<a name="line.97"></a>
+<span class="sourceLineNo">098</span>@InterfaceAudience.Private<a name="line.98"></a>
+<span class="sourceLineNo">099</span>public abstract class RegionTransitionProcedure<a name="line.99"></a>
+<span class="sourceLineNo">100</span>    extends Procedure&lt;MasterProcedureEnv&gt;<a name="line.100"></a>
+<span class="sourceLineNo">101</span>    implements TableProcedureInterface,<a name="line.101"></a>
+<span class="sourceLineNo">102</span>      RemoteProcedure&lt;MasterProcedureEnv, ServerName&gt; {<a name="line.102"></a>
+<span class="sourceLineNo">103</span>  private static final Logger LOG = LoggerFactory.getLogger(RegionTransitionProcedure.class);<a name="line.103"></a>
+<span class="sourceLineNo">104</span><a name="line.104"></a>
+<span class="sourceLineNo">105</span>  protected final AtomicBoolean aborted = new AtomicBoolean(false);<a name="line.105"></a>
+<span class="sourceLineNo">106</span><a name="line.106"></a>
+<span class="sourceLineNo">107</span>  private RegionTransitionState transitionState = RegionTransitionState.REGION_TRANSITION_QUEUE;<a name="line.107"></a>
+<span class="sourceLineNo">108</span>  /**<a name="line.108"></a>
+<span class="sourceLineNo">109</span>   * This data member must be persisted. Expectation is that it is done by subclasses in their<a name="line.109"></a>
+<span class="sourceLineNo">110</span>   * {@link #serializeStateData(ProcedureStateSerializer)} call, restoring {@link #regionInfo}<a name="line.110"></a>
+<span class="sourceLineNo">111</span>   * in their {@link #deserializeStateData(ProcedureStateSerializer)} method.<a name="line.111"></a>
+<span class="sourceLineNo">112</span>   */<a name="line.112"></a>
+<span class="sourceLineNo">113</span>  private RegionInfo regionInfo;<a name="line.113"></a>
+<span class="sourceLineNo">114</span><a name="line.114"></a>
+<span class="sourceLineNo">115</span>  /**<a name="line.115"></a>
+<span class="sourceLineNo">116</span>   * Like {@link #regionInfo}, the expectation is that subclasses persist the value of this<a name="line.116"></a>
+<span class="sourceLineNo">117</span>   * data member. It is used doing backoff when Procedure gets stuck.<a name="line.117"></a>
+<span class="sourceLineNo">118</span>   */<a name="line.118"></a>
+<span class="sourceLineNo">119</span>  private int attempt;<a name="line.119"></a>
+<span class="sourceLineNo">120</span><a name="line.120"></a>
+<span class="sourceLineNo">121</span>  private volatile boolean lock = false;<a name="line.121"></a>
+<span class="sourceLineNo">122</span><a name="line.122"></a>
+<span class="sourceLineNo">123</span>  // Required by the Procedure framework to create the procedure on replay<a name="line.123"></a>
+<span class="sourceLineNo">124</span>  public RegionTransitionProcedure() {}<a name="line.124"></a>
 <span class="sourceLineNo">125</span><a name="line.125"></a>
-<span class="sourceLineNo">126</span>  @Override<a name="line.126"></a>
-<span class="sourceLineNo">127</span>  public void toStringClassDetails(final StringBuilder sb) {<a name="line.127"></a>
-<span class="sourceLineNo">128</span>    sb.append(getClass().getSimpleName());<a name="line.128"></a>
-<span class="sourceLineNo">129</span>    sb.append(" table=");<a name="line.129"></a>
-<span class="sourceLineNo">130</span>    sb.append(getTableName());<a name="line.130"></a>
-<span class="sourceLineNo">131</span>    sb.append(", region=");<a name="line.131"></a>
-<span class="sourceLineNo">132</span>    sb.append(getRegionInfo() == null? null: getRegionInfo().getEncodedName());<a name="line.132"></a>
+<span class="sourceLineNo">126</span>  public RegionTransitionProcedure(final RegionInfo regionInfo) {<a name="line.126"></a>
+<span class="sourceLineNo">127</span>    this.regionInfo = regionInfo;<a name="line.127"></a>
+<span class="sourceLineNo">128</span>  }<a name="line.128"></a>
+<span class="sourceLineNo">129</span><a name="line.129"></a>
+<span class="sourceLineNo">130</span>  @VisibleForTesting<a name="line.130"></a>
+<span class="sourceLineNo">131</span>  public RegionInfo getRegionInfo() {<a name="line.131"></a>
+<span class="sourceLineNo">132</span>    return regionInfo;<a name="line.132"></a>
 <span class="sourceLineNo">133</span>  }<a name="line.133"></a>
 <span class="sourceLineNo">134</span><a name="line.134"></a>
-<span class="sourceLineNo">135</span>  public RegionStateNode getRegionState(final MasterProcedureEnv env) {<a name="line.135"></a>
-<span class="sourceLineNo">136</span>    return env.getAssignmentManager().getRegionStates().getOrCreateRegionStateNode(getRegionInfo());<a name="line.136"></a>
-<span class="sourceLineNo">137</span>  }<a name="line.137"></a>
-<span class="sourceLineNo">138</span><a name="line.138"></a>
-<span class="sourceLineNo">139</span>  void setTransitionState(final RegionTransitionState state) {<a name="line.139"></a>
-<span class="sourceLineNo">140</span>    this.transitionState = state;<a name="line.140"></a>
-<span class="sourceLineNo">141</span>  }<a name="line.141"></a>
-<span class="sourceLineNo">142</span><a name="line.142"></a>
-<span class="sourceLineNo">143</span>  RegionTransitionState getTransitionState() {<a name="line.143"></a>
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+<span class="sourceLineNo">371</span>    } catch (IOException e) {<a name="line.371"></a>
+<span class="sourceLineNo">372</span>      long backoff = getBackoffTime(this.attempt++);<a name="line.372"></a>
+<span class="sourceLineNo">373</span>      LOG.warn("Failed transition, suspend {}secs {}; {}; waiting on rectified condition fixed " +<a name="line.373"></a>
+<span class="sourceLineNo">374</span>              "by other Procedure or operator intervention", backoff / 1000, this,<a name="line.374"></a>
+<span class="sourceLineNo">375</span>          regionNode.toShortString(), e);<a name="line.375"></a>
+<span class="sourceLineNo">376</span>      getRegionState(env).getProcedureEvent().suspend();<a name="line.376"></a>
+<span class="sourceLineNo">377</span>      if (getRegionState(env).getProcedureEvent().suspendIfNotReady(this)) {<a name="line.377"></a>
+<span class="sourceLineNo">378</span>        setTimeout(Math.toIntExact(backoff));<a name="line.378"></a>
+<span class="sourceLineNo">379</span>        setState(ProcedureProtos.ProcedureState.WAITING_TIMEOUT);<a name="line.379"></a>
+<span class="sourceLineNo">380</span>        throw new ProcedureSuspendedException();<a name="line.380"></a>
+<span class="sourceLineNo">381</span>      }<a name="line.381"></a>
+<span class="sourceLineNo">382</span>    }<a name="line.382"></a>
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-<span class="sourceLineNo">403</span>    // the client does not know about this procedure.<a name="line.403"></a>
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-<span class="sourceLineNo">416</span>    throw new UnsupportedOperationException();<a name="line.416"></a>
+<span class="sourceLineNo">384</span>    return new Procedure[] {this};<a name="line.384"></a>
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+<span class="sourceLineNo">386</span><a name="line.386"></a>
+<span class="sourceLineNo">387</span>  private long getBackoffTime(int attempts) {<a name="line.387"></a>
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+<span class="sourceLineNo">389</span>    long maxBackoffTime = 60 * 60 * 1000; // An hour. Hard-coded for for now.<a name="line.389"></a>
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+<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>   * At end of timeout, wake ourselves up so we run again.<a name="line.394"></a>
+<span class="sourceLineNo">395</span>   */<a name="line.395"></a>
+<span class="sourceLineNo">396</span>  @Override<a name="line.396"></a>
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+<span class="sourceLineNo">400</span>    return false; // 'false' means that this procedure handled the timeout<a name="line.400"></a>
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+<span class="sourceLineNo">402</span><a name="line.402"></a>
+<span class="sourceLineNo">403</span>  @Override<a name="line.403"></a>
+<span class="sourceLineNo">404</span>  protected void rollback(final MasterProcedureEnv env) {<a name="line.404"></a>
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+<span class="sourceLineNo">406</span>      // Nothing done up to this point. abort safely.<a name="line.406"></a>
+<span class="sourceLineNo">407</span>      // This should happen when something like disableTable() is triggered.<a name="line.407"></a>
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+<span class="sourceLineNo">410</span>    }<a name="line.410"></a>
+<span class="sourceLineNo">411</span><a name="line.411"></a>
+<span class="sourceLineNo">412</span>    // There is no rollback for assignment unless we cancel the operation by<a name="line.412"></a>
+<span class="sourceLineNo">413</span>    // dropping/disabling the table.<a name="line.413"></a>
+<span class="sourceLineNo">414</span>    throw new UnsupportedOperationException("Unhandled state " + transitionState +<a name="line.414"></a>
+<span class="sourceLineNo">415</span>        "; there is no rollback for assignment unless we cancel the operation by " +<a name="line.415"></a>
+<span class="sourceLineNo">416</span>        "dropping/disabling the table");<a name="line.416"></a>
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 <span class="sourceLineNo">418</span><a name="line.418"></a>
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-<span class="sourceLineNo">422</span>    throw new UnsupportedOperationException();<a name="line.422"></a>
-<span class="sourceLineNo">423</span>  }<a name="line.423"></a>
-<span class="sourceLineNo">424</span>}<a name="line.424"></a>
+<span class="sourceLineNo">419</span>  protected abstract boolean isRollbackSupported(final RegionTransitionState state);<a name="line.419"></a>
+<span class="sourceLineNo">420</span><a name="line.420"></a>
+<span class="sourceLineNo">421</span>  @Override<a name="line.421"></a>
+<span class="sourceLineNo">422</span>  protected boolean abort(final MasterProcedureEnv env) {<a name="line.422"></a>
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+<span class="sourceLineNo">424</span>      aborted.set(true);<a name="line.424"></a>
+<span class="sourceLineNo">425</span>      return true;<a name="line.425"></a>
+<span class="sourceLineNo">426</span>    }<a name="line.426"></a>
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+<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>  @Override<a name="line.430"></a>
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+<span class="sourceLineNo">437</span><a name="line.437"></a>
+<span class="sourceLineNo">438</span>    // TODO: Revisit this and move it to the executor<a name="line.438"></a>
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+<span class="sourceLineNo">441</span>        LOG.debug(LockState.LOCK_EVENT_WAIT + " pid=" + getProcId() + " " +<a name="line.441"></a>
+<span class="sourceLineNo">442</span>          env.getProcedureScheduler().dumpLocks());<a name="line.442"></a>
+<span class="sourceLineNo">443</span>      } catch (IOException e) {<a name="line.443"></a>
+<span class="sourceLineNo">444</span>        // TODO Auto-generated catch block<a name="line.444"></a>
+<span class="sourceLineNo">445</span>        e.printStackTrace();<a name="line.445"></a>
+<span class="sourceLineNo">446</span>      }<a name="line.446"></a>
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+<span class="sourceLineNo">452</span><a name="line.452"></a>
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+<span class="sourceLineNo">457</span>  }<a name="line.457"></a>
+<span class="sourceLineNo">458</span><a name="line.458"></a>
+<span class="sourceLineNo">459</span>  @Override<a name="line.459"></a>
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+<span class="sourceLineNo">463</span><a name="line.463"></a>
+<span class="sourceLineNo">464</span>  @Override<a name="line.464"></a>
+<span class="sourceLineNo">465</span>  protected boolean hasLock(final MasterProcedureEnv env) {<a name="line.465"></a>
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+<span class="sourceLineNo">468</span><a name="line.468"></a>
+<span class="sourceLineNo">469</span>  @Override<a name="line.469"></a>
+<span class="sourceLineNo">470</span>  protected boolean shouldWaitClientAck(MasterProcedureEnv env) {<a name="line.470"></a>
+<span class="sourceLineNo">471</span>    // The operation is triggered internally on the server<a name="line.471"></a>
+<span class="sourceLineNo">472</span>    // the client does not know about this procedure.<a name="line.472"></a>
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+<span class="sourceLineNo">474</span>  }<a name="line.474"></a>
+<span class="sourceLineNo">475</span><a name="line.475"></a>
+<span class="sourceLineNo">476</span>  /**<a name="line.476"></a>
+<span class="sourceLineNo">477</span>   * Used by ServerCrashProcedure to see if this Assign/Unassign needs processing.<a name="line.477"></a>
+<span class="sourceLineNo">478</span>   * @return ServerName the Assign or Unassign is going against.<a name="line.478"></a>
+<span class="sourceLineNo">479</span>   */<a name="line.479"></a>
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+<span class="sourceLineNo">481</span><a name="line.481"></a>
+<span class="sourceLineNo">482</span>  @Override<a name="line.482"></a>
+<span class="sourceLineNo">483</span>  public void remoteOperationCompleted(MasterProcedureEnv env) {<a name="line.483"></a>
+<span class="sourceLineNo">484</span>    // should not be called for region operation until we modified the open/close region procedure<a name="line.484"></a>
+<span class="sourceLineNo">485</span>    throw new UnsupportedOperationException();<a name="line.485"></a>
+<span class="sourceLineNo">486</span>  }<a name="line.486"></a>
+<span class="sourceLineNo">487</span><a name="line.487"></a>
+<span class="sourceLineNo">488</span>  @Override<a name="line.488"></a>
+<span class="sourceLineNo">489</span>  public void remoteOperationFailed(MasterProcedureEnv env, RemoteProcedureException error) {<a name="line.489"></a>
+<span class="sourceLineNo">490</span>    // should not be called for region operation until we modified the open/close region procedure<a name="line.490"></a>
+<span class="sourceLineNo">491</span>    throw new UnsupportedOperationException();<a name="line.491"></a>
+<span class="sourceLineNo">492</span>  }<a name="line.492"></a>
+<span class="sourceLineNo">493</span>}<a name="line.493"></a>
 
 
 


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