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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/11/29 14:52:56 UTC
[4/8] hbase-site git commit: Published site at
f1f2b5a038d730e68720503331951a3c7edb053d.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/545640e1/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html
index 054ecc3..2263672 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/procedure/CloneSnapshotProcedure.html
@@ -50,466 +50,495 @@
<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.master.assignment.AssignmentManager;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.master.procedure.CreateTableProcedure.CreateHdfsRegions;<a name="line.44"></a>
-<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.45"></a>
-<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.monitoring.TaskMonitor;<a name="line.46"></a>
-<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.47"></a>
-<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;<a name="line.48"></a>
-<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.snapshot.RestoreSnapshotException;<a name="line.49"></a>
-<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper;<a name="line.50"></a>
-<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;<a name="line.51"></a>
-<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.snapshot.SnapshotManifest;<a name="line.52"></a>
-<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.FSTableDescriptors;<a name="line.53"></a>
-<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.54"></a>
-<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.55"></a>
-<span class="sourceLineNo">056</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.56"></a>
-<span class="sourceLineNo">057</span>import org.slf4j.Logger;<a name="line.57"></a>
-<span class="sourceLineNo">058</span>import org.slf4j.LoggerFactory;<a name="line.58"></a>
-<span class="sourceLineNo">059</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.59"></a>
-<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.60"></a>
-<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.61"></a>
-<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.62"></a>
-<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloneSnapshotState;<a name="line.63"></a>
-<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.64"></a>
-<span class="sourceLineNo">065</span><a name="line.65"></a>
-<span class="sourceLineNo">066</span>@InterfaceAudience.Private<a name="line.66"></a>
-<span class="sourceLineNo">067</span>public class CloneSnapshotProcedure<a name="line.67"></a>
-<span class="sourceLineNo">068</span> extends AbstractStateMachineTableProcedure<CloneSnapshotState> {<a name="line.68"></a>
-<span class="sourceLineNo">069</span> private static final Logger LOG = LoggerFactory.getLogger(CloneSnapshotProcedure.class);<a name="line.69"></a>
-<span class="sourceLineNo">070</span><a name="line.70"></a>
-<span class="sourceLineNo">071</span> private TableDescriptor tableDescriptor;<a name="line.71"></a>
-<span class="sourceLineNo">072</span> private SnapshotDescription snapshot;<a name="line.72"></a>
-<span class="sourceLineNo">073</span> private boolean restoreAcl;<a name="line.73"></a>
-<span class="sourceLineNo">074</span> private List<RegionInfo> newRegions = null;<a name="line.74"></a>
-<span class="sourceLineNo">075</span> private Map<String, Pair<String, String> > parentsToChildrenPairMap = new HashMap<>();<a name="line.75"></a>
-<span class="sourceLineNo">076</span><a name="line.76"></a>
-<span class="sourceLineNo">077</span> // Monitor<a name="line.77"></a>
-<span class="sourceLineNo">078</span> private MonitoredTask monitorStatus = null;<a name="line.78"></a>
-<span class="sourceLineNo">079</span><a name="line.79"></a>
-<span class="sourceLineNo">080</span> private Boolean traceEnabled = null;<a name="line.80"></a>
-<span class="sourceLineNo">081</span><a name="line.81"></a>
-<span class="sourceLineNo">082</span> /**<a name="line.82"></a>
-<span class="sourceLineNo">083</span> * Constructor (for failover)<a name="line.83"></a>
-<span class="sourceLineNo">084</span> */<a name="line.84"></a>
-<span class="sourceLineNo">085</span> public CloneSnapshotProcedure() {<a name="line.85"></a>
-<span class="sourceLineNo">086</span> }<a name="line.86"></a>
-<span class="sourceLineNo">087</span><a name="line.87"></a>
-<span class="sourceLineNo">088</span> public CloneSnapshotProcedure(final MasterProcedureEnv env,<a name="line.88"></a>
-<span class="sourceLineNo">089</span> final TableDescriptor tableDescriptor, final SnapshotDescription snapshot) {<a name="line.89"></a>
-<span class="sourceLineNo">090</span> this(env, tableDescriptor, snapshot, 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> /**<a name="line.93"></a>
-<span class="sourceLineNo">094</span> * Constructor<a name="line.94"></a>
-<span class="sourceLineNo">095</span> * @param env MasterProcedureEnv<a name="line.95"></a>
-<span class="sourceLineNo">096</span> * @param tableDescriptor the table to operate on<a name="line.96"></a>
-<span class="sourceLineNo">097</span> * @param snapshot snapshot to clone from<a name="line.97"></a>
-<span class="sourceLineNo">098</span> */<a name="line.98"></a>
-<span class="sourceLineNo">099</span> public CloneSnapshotProcedure(final MasterProcedureEnv env,<a name="line.99"></a>
-<span class="sourceLineNo">100</span> final TableDescriptor tableDescriptor, final SnapshotDescription snapshot,<a name="line.100"></a>
-<span class="sourceLineNo">101</span> final boolean restoreAcl) {<a name="line.101"></a>
-<span class="sourceLineNo">102</span> super(env);<a name="line.102"></a>
-<span class="sourceLineNo">103</span> this.tableDescriptor = tableDescriptor;<a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.snapshot = snapshot;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.restoreAcl = restoreAcl;<a name="line.105"></a>
-<span class="sourceLineNo">106</span><a name="line.106"></a>
-<span class="sourceLineNo">107</span> getMonitorStatus();<a name="line.107"></a>
-<span class="sourceLineNo">108</span> }<a name="line.108"></a>
-<span class="sourceLineNo">109</span><a name="line.109"></a>
-<span class="sourceLineNo">110</span> /**<a name="line.110"></a>
-<span class="sourceLineNo">111</span> * Set up monitor status if it is not created.<a name="line.111"></a>
-<span class="sourceLineNo">112</span> */<a name="line.112"></a>
-<span class="sourceLineNo">113</span> private MonitoredTask getMonitorStatus() {<a name="line.113"></a>
-<span class="sourceLineNo">114</span> if (monitorStatus == null) {<a name="line.114"></a>
-<span class="sourceLineNo">115</span> monitorStatus = TaskMonitor.get().createStatus("Cloning snapshot '" + snapshot.getName() +<a name="line.115"></a>
-<span class="sourceLineNo">116</span> "' to table " + getTableName());<a name="line.116"></a>
-<span class="sourceLineNo">117</span> }<a name="line.117"></a>
-<span class="sourceLineNo">118</span> return monitorStatus;<a name="line.118"></a>
-<span class="sourceLineNo">119</span> }<a name="line.119"></a>
-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span> private void restoreSnapshotAcl(MasterProcedureEnv env) throws IOException {<a name="line.121"></a>
-<span class="sourceLineNo">122</span> Configuration conf = env.getMasterServices().getConfiguration();<a name="line.122"></a>
-<span class="sourceLineNo">123</span> if (restoreAcl && snapshot.hasUsersAndPermissions() && snapshot.getUsersAndPermissions() != null<a name="line.123"></a>
-<span class="sourceLineNo">124</span> && SnapshotDescriptionUtils.isSecurityAvailable(conf)) {<a name="line.124"></a>
-<span class="sourceLineNo">125</span> RestoreSnapshotHelper.restoreSnapshotAcl(snapshot, tableDescriptor.getTableName(), conf);<a name="line.125"></a>
-<span class="sourceLineNo">126</span> }<a name="line.126"></a>
-<span class="sourceLineNo">127</span> }<a name="line.127"></a>
-<span class="sourceLineNo">128</span><a name="line.128"></a>
-<span class="sourceLineNo">129</span> @Override<a name="line.129"></a>
-<span class="sourceLineNo">130</span> protected Flow executeFromState(final MasterProcedureEnv env, final CloneSnapshotState state)<a name="line.130"></a>
-<span class="sourceLineNo">131</span> throws InterruptedException {<a name="line.131"></a>
-<span class="sourceLineNo">132</span> if (isTraceEnabled()) {<a name="line.132"></a>
-<span class="sourceLineNo">133</span> LOG.trace(this + " execute state=" + state);<a name="line.133"></a>
-<span class="sourceLineNo">134</span> }<a name="line.134"></a>
-<span class="sourceLineNo">135</span> try {<a name="line.135"></a>
-<span class="sourceLineNo">136</span> switch (state) {<a name="line.136"></a>
-<span class="sourceLineNo">137</span> case CLONE_SNAPSHOT_PRE_OPERATION:<a name="line.137"></a>
-<span class="sourceLineNo">138</span> // Verify if we can clone the table<a name="line.138"></a>
-<span class="sourceLineNo">139</span> prepareClone(env);<a name="line.139"></a>
-<span class="sourceLineNo">140</span><a name="line.140"></a>
-<span class="sourceLineNo">141</span> preCloneSnapshot(env);<a name="line.141"></a>
-<span class="sourceLineNo">142</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_WRITE_FS_LAYOUT);<a name="line.142"></a>
-<span class="sourceLineNo">143</span> break;<a name="line.143"></a>
-<span class="sourceLineNo">144</span> case CLONE_SNAPSHOT_WRITE_FS_LAYOUT:<a name="line.144"></a>
-<span class="sourceLineNo">145</span> newRegions = createFilesystemLayout(env, tableDescriptor, newRegions);<a name="line.145"></a>
-<span class="sourceLineNo">146</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_ADD_TO_META);<a name="line.146"></a>
-<span class="sourceLineNo">147</span> break;<a name="line.147"></a>
-<span class="sourceLineNo">148</span> case CLONE_SNAPSHOT_ADD_TO_META:<a name="line.148"></a>
-<span class="sourceLineNo">149</span> addRegionsToMeta(env);<a name="line.149"></a>
-<span class="sourceLineNo">150</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_ASSIGN_REGIONS);<a name="line.150"></a>
-<span class="sourceLineNo">151</span> break;<a name="line.151"></a>
-<span class="sourceLineNo">152</span> case CLONE_SNAPSHOT_ASSIGN_REGIONS:<a name="line.152"></a>
-<span class="sourceLineNo">153</span> CreateTableProcedure.setEnablingState(env, getTableName());<a name="line.153"></a>
-<span class="sourceLineNo">154</span><a name="line.154"></a>
-<span class="sourceLineNo">155</span> // Separate newRegions to split regions and regions to assign<a name="line.155"></a>
-<span class="sourceLineNo">156</span> List<RegionInfo> splitRegions = new ArrayList<>();<a name="line.156"></a>
-<span class="sourceLineNo">157</span> List<RegionInfo> regionsToAssign = new ArrayList<>();<a name="line.157"></a>
-<span class="sourceLineNo">158</span> newRegions.forEach(ri -> {<a name="line.158"></a>
-<span class="sourceLineNo">159</span> if (ri.isOffline() && (ri.isSplit() || ri.isSplitParent())) {<a name="line.159"></a>
-<span class="sourceLineNo">160</span> splitRegions.add(ri);<a name="line.160"></a>
-<span class="sourceLineNo">161</span> } else {<a name="line.161"></a>
-<span class="sourceLineNo">162</span> regionsToAssign.add(ri);<a name="line.162"></a>
-<span class="sourceLineNo">163</span> }<a name="line.163"></a>
-<span class="sourceLineNo">164</span> });<a name="line.164"></a>
-<span class="sourceLineNo">165</span><a name="line.165"></a>
-<span class="sourceLineNo">166</span> // For split regions, add them to RegionStates<a name="line.166"></a>
-<span class="sourceLineNo">167</span> AssignmentManager am = env.getAssignmentManager();<a name="line.167"></a>
-<span class="sourceLineNo">168</span> splitRegions.forEach(ri -><a name="line.168"></a>
-<span class="sourceLineNo">169</span> am.getRegionStates().updateRegionState(ri, RegionState.State.SPLIT)<a name="line.169"></a>
-<span class="sourceLineNo">170</span> );<a name="line.170"></a>
-<span class="sourceLineNo">171</span><a name="line.171"></a>
-<span class="sourceLineNo">172</span> addChildProcedure(env.getAssignmentManager()<a name="line.172"></a>
-<span class="sourceLineNo">173</span> .createRoundRobinAssignProcedures(regionsToAssign));<a name="line.173"></a>
-<span class="sourceLineNo">174</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_UPDATE_DESC_CACHE);<a name="line.174"></a>
-<span class="sourceLineNo">175</span> break;<a name="line.175"></a>
-<span class="sourceLineNo">176</span> case CLONE_SNAPSHOT_UPDATE_DESC_CACHE:<a name="line.176"></a>
-<span class="sourceLineNo">177</span> CreateTableProcedure.setEnabledState(env, getTableName());<a name="line.177"></a>
-<span class="sourceLineNo">178</span> CreateTableProcedure.updateTableDescCache(env, getTableName());<a name="line.178"></a>
-<span class="sourceLineNo">179</span> setNextState(CloneSnapshotState.CLONE_SNAPHOST_RESTORE_ACL);<a name="line.179"></a>
-<span class="sourceLineNo">180</span> break;<a name="line.180"></a>
-<span class="sourceLineNo">181</span> case CLONE_SNAPHOST_RESTORE_ACL:<a name="line.181"></a>
-<span class="sourceLineNo">182</span> restoreSnapshotAcl(env);<a name="line.182"></a>
-<span class="sourceLineNo">183</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_POST_OPERATION);<a name="line.183"></a>
-<span class="sourceLineNo">184</span> break;<a name="line.184"></a>
-<span class="sourceLineNo">185</span> case CLONE_SNAPSHOT_POST_OPERATION:<a name="line.185"></a>
-<span class="sourceLineNo">186</span> postCloneSnapshot(env);<a name="line.186"></a>
-<span class="sourceLineNo">187</span><a name="line.187"></a>
-<span class="sourceLineNo">188</span> MetricsSnapshot metricsSnapshot = new MetricsSnapshot();<a name="line.188"></a>
-<span class="sourceLineNo">189</span> metricsSnapshot.addSnapshotClone(<a name="line.189"></a>
-<span class="sourceLineNo">190</span> getMonitorStatus().getCompletionTimestamp() - getMonitorStatus().getStartTime());<a name="line.190"></a>
-<span class="sourceLineNo">191</span> getMonitorStatus().markComplete("Clone snapshot '"+ snapshot.getName() +"' completed!");<a name="line.191"></a>
-<span class="sourceLineNo">192</span> return Flow.NO_MORE_STATE;<a name="line.192"></a>
-<span class="sourceLineNo">193</span> default:<a name="line.193"></a>
-<span class="sourceLineNo">194</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.194"></a>
-<span class="sourceLineNo">195</span> }<a name="line.195"></a>
-<span class="sourceLineNo">196</span> } catch (IOException e) {<a name="line.196"></a>
-<span class="sourceLineNo">197</span> if (isRollbackSupported(state)) {<a name="line.197"></a>
-<span class="sourceLineNo">198</span> setFailure("master-clone-snapshot", e);<a name="line.198"></a>
-<span class="sourceLineNo">199</span> } else {<a name="line.199"></a>
-<span class="sourceLineNo">200</span> LOG.warn("Retriable error trying to clone snapshot=" + snapshot.getName() +<a name="line.200"></a>
-<span class="sourceLineNo">201</span> " to table=" + getTableName() + " state=" + state, e);<a name="line.201"></a>
-<span class="sourceLineNo">202</span> }<a name="line.202"></a>
-<span class="sourceLineNo">203</span> }<a name="line.203"></a>
-<span class="sourceLineNo">204</span> return Flow.HAS_MORE_STATE;<a name="line.204"></a>
-<span class="sourceLineNo">205</span> }<a name="line.205"></a>
-<span class="sourceLineNo">206</span><a name="line.206"></a>
-<span class="sourceLineNo">207</span> @Override<a name="line.207"></a>
-<span class="sourceLineNo">208</span> protected void rollbackState(final MasterProcedureEnv env, final CloneSnapshotState state)<a name="line.208"></a>
-<span class="sourceLineNo">209</span> throws IOException {<a name="line.209"></a>
-<span class="sourceLineNo">210</span> if (state == CloneSnapshotState.CLONE_SNAPSHOT_PRE_OPERATION) {<a name="line.210"></a>
-<span class="sourceLineNo">211</span> DeleteTableProcedure.deleteTableStates(env, getTableName());<a name="line.211"></a>
-<span class="sourceLineNo">212</span> // TODO-MAYBE: call the deleteTable coprocessor event?<a name="line.212"></a>
-<span class="sourceLineNo">213</span> return;<a name="line.213"></a>
-<span class="sourceLineNo">214</span> }<a name="line.214"></a>
-<span class="sourceLineNo">215</span><a name="line.215"></a>
-<span class="sourceLineNo">216</span> // The procedure doesn't have a rollback. The execution will succeed, at some point.<a name="line.216"></a>
-<span class="sourceLineNo">217</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.217"></a>
-<span class="sourceLineNo">218</span> }<a name="line.218"></a>
-<span class="sourceLineNo">219</span><a name="line.219"></a>
-<span class="sourceLineNo">220</span> @Override<a name="line.220"></a>
-<span class="sourceLineNo">221</span> protected boolean isRollbackSupported(final CloneSnapshotState state) {<a name="line.221"></a>
-<span class="sourceLineNo">222</span> switch (state) {<a name="line.222"></a>
-<span class="sourceLineNo">223</span> case CLONE_SNAPSHOT_PRE_OPERATION:<a name="line.223"></a>
-<span class="sourceLineNo">224</span> return true;<a name="line.224"></a>
-<span class="sourceLineNo">225</span> default:<a name="line.225"></a>
-<span class="sourceLineNo">226</span> return false;<a name="line.226"></a>
-<span class="sourceLineNo">227</span> }<a name="line.227"></a>
-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
-<span class="sourceLineNo">229</span><a name="line.229"></a>
-<span class="sourceLineNo">230</span> @Override<a name="line.230"></a>
-<span class="sourceLineNo">231</span> protected CloneSnapshotState getState(final int stateId) {<a name="line.231"></a>
-<span class="sourceLineNo">232</span> return CloneSnapshotState.valueOf(stateId);<a name="line.232"></a>
-<span class="sourceLineNo">233</span> }<a name="line.233"></a>
-<span class="sourceLineNo">234</span><a name="line.234"></a>
-<span class="sourceLineNo">235</span> @Override<a name="line.235"></a>
-<span class="sourceLineNo">236</span> protected int getStateId(final CloneSnapshotState state) {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> return state.getNumber();<a name="line.237"></a>
-<span class="sourceLineNo">238</span> }<a name="line.238"></a>
-<span class="sourceLineNo">239</span><a name="line.239"></a>
-<span class="sourceLineNo">240</span> @Override<a name="line.240"></a>
-<span class="sourceLineNo">241</span> protected CloneSnapshotState getInitialState() {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> return CloneSnapshotState.CLONE_SNAPSHOT_PRE_OPERATION;<a name="line.242"></a>
-<span class="sourceLineNo">243</span> }<a name="line.243"></a>
-<span class="sourceLineNo">244</span><a name="line.244"></a>
-<span class="sourceLineNo">245</span> @Override<a name="line.245"></a>
-<span class="sourceLineNo">246</span> public TableName getTableName() {<a name="line.246"></a>
-<span class="sourceLineNo">247</span> return tableDescriptor.getTableName();<a name="line.247"></a>
-<span class="sourceLineNo">248</span> }<a name="line.248"></a>
-<span class="sourceLineNo">249</span><a name="line.249"></a>
-<span class="sourceLineNo">250</span> @Override<a name="line.250"></a>
-<span class="sourceLineNo">251</span> public TableOperationType getTableOperationType() {<a name="line.251"></a>
-<span class="sourceLineNo">252</span> return TableOperationType.CREATE; // Clone is creating a table<a name="line.252"></a>
-<span class="sourceLineNo">253</span> }<a name="line.253"></a>
-<span class="sourceLineNo">254</span><a name="line.254"></a>
-<span class="sourceLineNo">255</span> @Override<a name="line.255"></a>
-<span class="sourceLineNo">256</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> sb.append(getClass().getSimpleName());<a name="line.257"></a>
-<span class="sourceLineNo">258</span> sb.append(" (table=");<a name="line.258"></a>
-<span class="sourceLineNo">259</span> sb.append(getTableName());<a name="line.259"></a>
-<span class="sourceLineNo">260</span> sb.append(" snapshot=");<a name="line.260"></a>
-<span class="sourceLineNo">261</span> sb.append(snapshot);<a name="line.261"></a>
-<span class="sourceLineNo">262</span> sb.append(")");<a name="line.262"></a>
-<span class="sourceLineNo">263</span> }<a name="line.263"></a>
-<span class="sourceLineNo">264</span><a name="line.264"></a>
-<span class="sourceLineNo">265</span> @Override<a name="line.265"></a>
-<span class="sourceLineNo">266</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.266"></a>
-<span class="sourceLineNo">267</span> throws IOException {<a name="line.267"></a>
-<span class="sourceLineNo">268</span> super.serializeStateData(serializer);<a name="line.268"></a>
-<span class="sourceLineNo">269</span><a name="line.269"></a>
-<span class="sourceLineNo">270</span> MasterProcedureProtos.CloneSnapshotStateData.Builder cloneSnapshotMsg =<a name="line.270"></a>
-<span class="sourceLineNo">271</span> MasterProcedureProtos.CloneSnapshotStateData.newBuilder()<a name="line.271"></a>
-<span class="sourceLineNo">272</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.272"></a>
-<span class="sourceLineNo">273</span> .setSnapshot(this.snapshot)<a name="line.273"></a>
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+<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.46"></a>
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+<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;<a name="line.48"></a>
+<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;<a name="line.49"></a>
+<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.snapshot.RestoreSnapshotException;<a name="line.50"></a>
+<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.snapshot.RestoreSnapshotHelper;<a name="line.51"></a>
+<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.snapshot.SnapshotDescriptionUtils;<a name="line.52"></a>
+<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.snapshot.SnapshotManifest;<a name="line.53"></a>
+<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.util.FSTableDescriptors;<a name="line.54"></a>
+<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.util.FSUtils;<a name="line.55"></a>
+<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.56"></a>
+<span class="sourceLineNo">057</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.57"></a>
+<span class="sourceLineNo">058</span>import org.slf4j.Logger;<a name="line.58"></a>
+<span class="sourceLineNo">059</span>import org.slf4j.LoggerFactory;<a name="line.59"></a>
+<span class="sourceLineNo">060</span>import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;<a name="line.60"></a>
+<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.61"></a>
+<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.62"></a>
+<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos;<a name="line.63"></a>
+<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.CloneSnapshotState;<a name="line.64"></a>
+<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription;<a name="line.65"></a>
+<span class="sourceLineNo">066</span><a name="line.66"></a>
+<span class="sourceLineNo">067</span>@InterfaceAudience.Private<a name="line.67"></a>
+<span class="sourceLineNo">068</span>public class CloneSnapshotProcedure<a name="line.68"></a>
+<span class="sourceLineNo">069</span> extends AbstractStateMachineTableProcedure<CloneSnapshotState> {<a name="line.69"></a>
+<span class="sourceLineNo">070</span> private static final Logger LOG = LoggerFactory.getLogger(CloneSnapshotProcedure.class);<a name="line.70"></a>
+<span class="sourceLineNo">071</span><a name="line.71"></a>
+<span class="sourceLineNo">072</span> private TableDescriptor tableDescriptor;<a name="line.72"></a>
+<span class="sourceLineNo">073</span> private SnapshotDescription snapshot;<a name="line.73"></a>
+<span class="sourceLineNo">074</span> private boolean restoreAcl;<a name="line.74"></a>
+<span class="sourceLineNo">075</span> private List<RegionInfo> newRegions = null;<a name="line.75"></a>
+<span class="sourceLineNo">076</span> private Map<String, Pair<String, String> > parentsToChildrenPairMap = new HashMap<>();<a name="line.76"></a>
+<span class="sourceLineNo">077</span><a name="line.77"></a>
+<span class="sourceLineNo">078</span> // Monitor<a name="line.78"></a>
+<span class="sourceLineNo">079</span> private MonitoredTask monitorStatus = null;<a name="line.79"></a>
+<span class="sourceLineNo">080</span><a name="line.80"></a>
+<span class="sourceLineNo">081</span> private Boolean traceEnabled = null;<a name="line.81"></a>
+<span class="sourceLineNo">082</span><a name="line.82"></a>
+<span class="sourceLineNo">083</span> /**<a name="line.83"></a>
+<span class="sourceLineNo">084</span> * Constructor (for failover)<a name="line.84"></a>
+<span class="sourceLineNo">085</span> */<a name="line.85"></a>
+<span class="sourceLineNo">086</span> public CloneSnapshotProcedure() {<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 CloneSnapshotProcedure(final MasterProcedureEnv env,<a name="line.89"></a>
+<span class="sourceLineNo">090</span> final TableDescriptor tableDescriptor, final SnapshotDescription snapshot) {<a name="line.90"></a>
+<span class="sourceLineNo">091</span> this(env, tableDescriptor, snapshot, false);<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> /**<a name="line.94"></a>
+<span class="sourceLineNo">095</span> * Constructor<a name="line.95"></a>
+<span class="sourceLineNo">096</span> * @param env MasterProcedureEnv<a name="line.96"></a>
+<span class="sourceLineNo">097</span> * @param tableDescriptor the table to operate on<a name="line.97"></a>
+<span class="sourceLineNo">098</span> * @param snapshot snapshot to clone from<a name="line.98"></a>
+<span class="sourceLineNo">099</span> */<a name="line.99"></a>
+<span class="sourceLineNo">100</span> public CloneSnapshotProcedure(final MasterProcedureEnv env,<a name="line.100"></a>
+<span class="sourceLineNo">101</span> final TableDescriptor tableDescriptor, final SnapshotDescription snapshot,<a name="line.101"></a>
+<span class="sourceLineNo">102</span> final boolean restoreAcl) {<a name="line.102"></a>
+<span class="sourceLineNo">103</span> super(env);<a name="line.103"></a>
+<span class="sourceLineNo">104</span> this.tableDescriptor = tableDescriptor;<a name="line.104"></a>
+<span class="sourceLineNo">105</span> this.snapshot = snapshot;<a name="line.105"></a>
+<span class="sourceLineNo">106</span> this.restoreAcl = restoreAcl;<a name="line.106"></a>
+<span class="sourceLineNo">107</span><a name="line.107"></a>
+<span class="sourceLineNo">108</span> getMonitorStatus();<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> /**<a name="line.111"></a>
+<span class="sourceLineNo">112</span> * Set up monitor status if it is not created.<a name="line.112"></a>
+<span class="sourceLineNo">113</span> */<a name="line.113"></a>
+<span class="sourceLineNo">114</span> private MonitoredTask getMonitorStatus() {<a name="line.114"></a>
+<span class="sourceLineNo">115</span> if (monitorStatus == null) {<a name="line.115"></a>
+<span class="sourceLineNo">116</span> monitorStatus = TaskMonitor.get().createStatus("Cloning snapshot '" + snapshot.getName() +<a name="line.116"></a>
+<span class="sourceLineNo">117</span> "' to table " + getTableName());<a name="line.117"></a>
+<span class="sourceLineNo">118</span> }<a name="line.118"></a>
+<span class="sourceLineNo">119</span> return monitorStatus;<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> private void restoreSnapshotAcl(MasterProcedureEnv env) throws IOException {<a name="line.122"></a>
+<span class="sourceLineNo">123</span> Configuration conf = env.getMasterServices().getConfiguration();<a name="line.123"></a>
+<span class="sourceLineNo">124</span> if (restoreAcl && snapshot.hasUsersAndPermissions() && snapshot.getUsersAndPermissions() != null<a name="line.124"></a>
+<span class="sourceLineNo">125</span> && SnapshotDescriptionUtils.isSecurityAvailable(conf)) {<a name="line.125"></a>
+<span class="sourceLineNo">126</span> RestoreSnapshotHelper.restoreSnapshotAcl(snapshot, tableDescriptor.getTableName(), conf);<a name="line.126"></a>
+<span class="sourceLineNo">127</span> }<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> @Override<a name="line.130"></a>
+<span class="sourceLineNo">131</span> protected Flow executeFromState(final MasterProcedureEnv env, final CloneSnapshotState state)<a name="line.131"></a>
+<span class="sourceLineNo">132</span> throws InterruptedException {<a name="line.132"></a>
+<span class="sourceLineNo">133</span> if (isTraceEnabled()) {<a name="line.133"></a>
+<span class="sourceLineNo">134</span> LOG.trace(this + " execute state=" + state);<a name="line.134"></a>
+<span class="sourceLineNo">135</span> }<a name="line.135"></a>
+<span class="sourceLineNo">136</span> try {<a name="line.136"></a>
+<span class="sourceLineNo">137</span> switch (state) {<a name="line.137"></a>
+<span class="sourceLineNo">138</span> case CLONE_SNAPSHOT_PRE_OPERATION:<a name="line.138"></a>
+<span class="sourceLineNo">139</span> // Verify if we can clone the table<a name="line.139"></a>
+<span class="sourceLineNo">140</span> prepareClone(env);<a name="line.140"></a>
+<span class="sourceLineNo">141</span><a name="line.141"></a>
+<span class="sourceLineNo">142</span> preCloneSnapshot(env);<a name="line.142"></a>
+<span class="sourceLineNo">143</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_WRITE_FS_LAYOUT);<a name="line.143"></a>
+<span class="sourceLineNo">144</span> break;<a name="line.144"></a>
+<span class="sourceLineNo">145</span> case CLONE_SNAPSHOT_WRITE_FS_LAYOUT:<a name="line.145"></a>
+<span class="sourceLineNo">146</span> newRegions = createFilesystemLayout(env, tableDescriptor, newRegions);<a name="line.146"></a>
+<span class="sourceLineNo">147</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_ADD_TO_META);<a name="line.147"></a>
+<span class="sourceLineNo">148</span> break;<a name="line.148"></a>
+<span class="sourceLineNo">149</span> case CLONE_SNAPSHOT_ADD_TO_META:<a name="line.149"></a>
+<span class="sourceLineNo">150</span> addRegionsToMeta(env);<a name="line.150"></a>
+<span class="sourceLineNo">151</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_ASSIGN_REGIONS);<a name="line.151"></a>
+<span class="sourceLineNo">152</span> break;<a name="line.152"></a>
+<span class="sourceLineNo">153</span> case CLONE_SNAPSHOT_ASSIGN_REGIONS:<a name="line.153"></a>
+<span class="sourceLineNo">154</span> CreateTableProcedure.setEnablingState(env, getTableName());<a name="line.154"></a>
+<span class="sourceLineNo">155</span><a name="line.155"></a>
+<span class="sourceLineNo">156</span> // Separate newRegions to split regions and regions to assign<a name="line.156"></a>
+<span class="sourceLineNo">157</span> List<RegionInfo> splitRegions = new ArrayList<>();<a name="line.157"></a>
+<span class="sourceLineNo">158</span> List<RegionInfo> regionsToAssign = new ArrayList<>();<a name="line.158"></a>
+<span class="sourceLineNo">159</span> newRegions.forEach(ri -> {<a name="line.159"></a>
+<span class="sourceLineNo">160</span> if (ri.isOffline() && (ri.isSplit() || ri.isSplitParent())) {<a name="line.160"></a>
+<span class="sourceLineNo">161</span> splitRegions.add(ri);<a name="line.161"></a>
+<span class="sourceLineNo">162</span> } else {<a name="line.162"></a>
+<span class="sourceLineNo">163</span> regionsToAssign.add(ri);<a name="line.163"></a>
+<span class="sourceLineNo">164</span> }<a name="line.164"></a>
+<span class="sourceLineNo">165</span> });<a name="line.165"></a>
+<span class="sourceLineNo">166</span><a name="line.166"></a>
+<span class="sourceLineNo">167</span> // For split regions, add them to RegionStates<a name="line.167"></a>
+<span class="sourceLineNo">168</span> AssignmentManager am = env.getAssignmentManager();<a name="line.168"></a>
+<span class="sourceLineNo">169</span> splitRegions.forEach(ri -><a name="line.169"></a>
+<span class="sourceLineNo">170</span> am.getRegionStates().updateRegionState(ri, RegionState.State.SPLIT)<a name="line.170"></a>
+<span class="sourceLineNo">171</span> );<a name="line.171"></a>
+<span class="sourceLineNo">172</span><a name="line.172"></a>
+<span class="sourceLineNo">173</span> addChildProcedure(env.getAssignmentManager()<a name="line.173"></a>
+<span class="sourceLineNo">174</span> .createRoundRobinAssignProcedures(regionsToAssign));<a name="line.174"></a>
+<span class="sourceLineNo">175</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_UPDATE_DESC_CACHE);<a name="line.175"></a>
+<span class="sourceLineNo">176</span> break;<a name="line.176"></a>
+<span class="sourceLineNo">177</span> case CLONE_SNAPSHOT_UPDATE_DESC_CACHE:<a name="line.177"></a>
+<span class="sourceLineNo">178</span> CreateTableProcedure.setEnabledState(env, getTableName());<a name="line.178"></a>
+<span class="sourceLineNo">179</span> CreateTableProcedure.updateTableDescCache(env, getTableName());<a name="line.179"></a>
+<span class="sourceLineNo">180</span> setNextState(CloneSnapshotState.CLONE_SNAPHOST_RESTORE_ACL);<a name="line.180"></a>
+<span class="sourceLineNo">181</span> break;<a name="line.181"></a>
+<span class="sourceLineNo">182</span> case CLONE_SNAPHOST_RESTORE_ACL:<a name="line.182"></a>
+<span class="sourceLineNo">183</span> restoreSnapshotAcl(env);<a name="line.183"></a>
+<span class="sourceLineNo">184</span> setNextState(CloneSnapshotState.CLONE_SNAPSHOT_POST_OPERATION);<a name="line.184"></a>
+<span class="sourceLineNo">185</span> break;<a name="line.185"></a>
+<span class="sourceLineNo">186</span> case CLONE_SNAPSHOT_POST_OPERATION:<a name="line.186"></a>
+<span class="sourceLineNo">187</span> postCloneSnapshot(env);<a name="line.187"></a>
+<span class="sourceLineNo">188</span><a name="line.188"></a>
+<span class="sourceLineNo">189</span> MetricsSnapshot metricsSnapshot = new MetricsSnapshot();<a name="line.189"></a>
+<span class="sourceLineNo">190</span> metricsSnapshot.addSnapshotClone(<a name="line.190"></a>
+<span class="sourceLineNo">191</span> getMonitorStatus().getCompletionTimestamp() - getMonitorStatus().getStartTime());<a name="line.191"></a>
+<span class="sourceLineNo">192</span> getMonitorStatus().markComplete("Clone snapshot '"+ snapshot.getName() +"' completed!");<a name="line.192"></a>
+<span class="sourceLineNo">193</span> return Flow.NO_MORE_STATE;<a name="line.193"></a>
+<span class="sourceLineNo">194</span> default:<a name="line.194"></a>
+<span class="sourceLineNo">195</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.195"></a>
+<span class="sourceLineNo">196</span> }<a name="line.196"></a>
+<span class="sourceLineNo">197</span> } catch (IOException e) {<a name="line.197"></a>
+<span class="sourceLineNo">198</span> if (isRollbackSupported(state)) {<a name="line.198"></a>
+<span class="sourceLineNo">199</span> setFailure("master-clone-snapshot", e);<a name="line.199"></a>
+<span class="sourceLineNo">200</span> } else {<a name="line.200"></a>
+<span class="sourceLineNo">201</span> LOG.warn("Retriable error trying to clone snapshot=" + snapshot.getName() +<a name="line.201"></a>
+<span class="sourceLineNo">202</span> " to table=" + getTableName() + " state=" + state, e);<a name="line.202"></a>
+<span class="sourceLineNo">203</span> }<a name="line.203"></a>
+<span class="sourceLineNo">204</span> }<a name="line.204"></a>
+<span class="sourceLineNo">205</span> return Flow.HAS_MORE_STATE;<a name="line.205"></a>
+<span class="sourceLineNo">206</span> }<a name="line.206"></a>
+<span class="sourceLineNo">207</span><a name="line.207"></a>
+<span class="sourceLineNo">208</span> @Override<a name="line.208"></a>
+<span class="sourceLineNo">209</span> protected void rollbackState(final MasterProcedureEnv env, final CloneSnapshotState state)<a name="line.209"></a>
+<span class="sourceLineNo">210</span> throws IOException {<a name="line.210"></a>
+<span class="sourceLineNo">211</span> if (state == CloneSnapshotState.CLONE_SNAPSHOT_PRE_OPERATION) {<a name="line.211"></a>
+<span class="sourceLineNo">212</span> DeleteTableProcedure.deleteTableStates(env, getTableName());<a name="line.212"></a>
+<span class="sourceLineNo">213</span> // TODO-MAYBE: call the deleteTable coprocessor event?<a name="line.213"></a>
+<span class="sourceLineNo">214</span> return;<a name="line.214"></a>
+<span class="sourceLineNo">215</span> }<a name="line.215"></a>
+<span class="sourceLineNo">216</span><a name="line.216"></a>
+<span class="sourceLineNo">217</span> // The procedure doesn't have a rollback. The execution will succeed, at some point.<a name="line.217"></a>
+<span class="sourceLineNo">218</span> throw new UnsupportedOperationException("unhandled state=" + state);<a name="line.218"></a>
+<span class="sourceLineNo">219</span> }<a name="line.219"></a>
+<span class="sourceLineNo">220</span><a name="line.220"></a>
+<span class="sourceLineNo">221</span> @Override<a name="line.221"></a>
+<span class="sourceLineNo">222</span> protected boolean isRollbackSupported(final CloneSnapshotState state) {<a name="line.222"></a>
+<span class="sourceLineNo">223</span> switch (state) {<a name="line.223"></a>
+<span class="sourceLineNo">224</span> case CLONE_SNAPSHOT_PRE_OPERATION:<a name="line.224"></a>
+<span class="sourceLineNo">225</span> return true;<a name="line.225"></a>
+<span class="sourceLineNo">226</span> default:<a name="line.226"></a>
+<span class="sourceLineNo">227</span> return false;<a name="line.227"></a>
+<span class="sourceLineNo">228</span> }<a name="line.228"></a>
+<span class="sourceLineNo">229</span> }<a name="line.229"></a>
+<span class="sourceLineNo">230</span><a name="line.230"></a>
+<span class="sourceLineNo">231</span> @Override<a name="line.231"></a>
+<span class="sourceLineNo">232</span> protected CloneSnapshotState getState(final int stateId) {<a name="line.232"></a>
+<span class="sourceLineNo">233</span> return CloneSnapshotState.valueOf(stateId);<a name="line.233"></a>
+<span class="sourceLineNo">234</span> }<a name="line.234"></a>
+<span class="sourceLineNo">235</span><a name="line.235"></a>
+<span class="sourceLineNo">236</span> @Override<a name="line.236"></a>
+<span class="sourceLineNo">237</span> protected int getStateId(final CloneSnapshotState state) {<a name="line.237"></a>
+<span class="sourceLineNo">238</span> return state.getNumber();<a name="line.238"></a>
+<span class="sourceLineNo">239</span> }<a name="line.239"></a>
+<span class="sourceLineNo">240</span><a name="line.240"></a>
+<span class="sourceLineNo">241</span> @Override<a name="line.241"></a>
+<span class="sourceLineNo">242</span> protected CloneSnapshotState getInitialState() {<a name="line.242"></a>
+<span class="sourceLineNo">243</span> return CloneSnapshotState.CLONE_SNAPSHOT_PRE_OPERATION;<a name="line.243"></a>
+<span class="sourceLineNo">244</span> }<a name="line.244"></a>
+<span class="sourceLineNo">245</span><a name="line.245"></a>
+<span class="sourceLineNo">246</span> @Override<a name="line.246"></a>
+<span class="sourceLineNo">247</span> public TableName getTableName() {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> return tableDescriptor.getTableName();<a name="line.248"></a>
+<span class="sourceLineNo">249</span> }<a name="line.249"></a>
+<span class="sourceLineNo">250</span><a name="line.250"></a>
+<span class="sourceLineNo">251</span> @Override<a name="line.251"></a>
+<span class="sourceLineNo">252</span> public TableOperationType getTableOperationType() {<a name="line.252"></a>
+<span class="sourceLineNo">253</span> return TableOperationType.CREATE; // Clone is creating a table<a name="line.253"></a>
+<span class="sourceLineNo">254</span> }<a name="line.254"></a>
+<span class="sourceLineNo">255</span><a name="line.255"></a>
+<span class="sourceLineNo">256</span> @Override<a name="line.256"></a>
+<span class="sourceLineNo">257</span> public void toStringClassDetails(StringBuilder sb) {<a name="line.257"></a>
+<span class="sourceLineNo">258</span> sb.append(getClass().getSimpleName());<a name="line.258"></a>
+<span class="sourceLineNo">259</span> sb.append(" (table=");<a name="line.259"></a>
+<span class="sourceLineNo">260</span> sb.append(getTableName());<a name="line.260"></a>
+<span class="sourceLineNo">261</span> sb.append(" snapshot=");<a name="line.261"></a>
+<span class="sourceLineNo">262</span> sb.append(snapshot);<a name="line.262"></a>
+<span class="sourceLineNo">263</span> sb.append(")");<a name="line.263"></a>
+<span class="sourceLineNo">264</span> }<a name="line.264"></a>
+<span class="sourceLineNo">265</span><a name="line.265"></a>
+<span class="sourceLineNo">266</span> @Override<a name="line.266"></a>
+<span class="sourceLineNo">267</span> protected void serializeStateData(ProcedureStateSerializer serializer)<a name="line.267"></a>
+<span class="sourceLineNo">268</span> throws IOException {<a name="line.268"></a>
+<span class="sourceLineNo">269</span> super.serializeStateData(serializer);<a name="line.269"></a>
+<span class="sourceLineNo">270</span><a name="line.270"></a>
+<span class="sourceLineNo">271</span> MasterProcedureProtos.CloneSnapshotStateData.Builder cloneSnapshotMsg =<a name="line.271"></a>
+<span class="sourceLineNo">272</span> MasterProcedureProtos.CloneSnapshotStateData.newBuilder()<a name="line.272"></a>
+<span class="sourceLineNo">273</span> .setUserInfo(MasterProcedureUtil.toProtoUserInfo(getUser()))<a name="line.273"></a>
+<span class="sourceLineNo">274</span> .setSnapshot(this.snapshot)<a name="line.274"></a>
+<span class="sourceLineNo">275</span> .setTableSchema(ProtobufUtil.toTableSchema(tableDescriptor));<a name="line.275"></a>
+<span class="sourceLineNo">276</span> if (newRegions != null) {<a name="line.276"></a>
+<span class="sourceLineNo">277</span> for (RegionInfo hri: newRegions) {<a name="line.277"></a>
+<span class="sourceLineNo">278</span> cloneSnapshotMsg.addRegionInfo(ProtobufUtil.toRegionInfo(hri));<a name="line.278"></a>
+<span class="sourceLineNo">279</span> }<a name="line.279"></a>
+<span class="sourceLineNo">280</span> }<a name="line.280"></a>
+<span class="sourceLineNo">281</span> if (!parentsToChildrenPairMap.isEmpty()) {<a name="line.281"></a>
+<span class="sourceLineNo">282</span> final Iterator<Map.Entry<String, Pair<String, String>>> it =<a name="line.282"></a>
+<span class="sourceLineNo">283</span> parentsToChildrenPairMap.entrySet().iterator();<a name="line.283"></a>
+<span class="sourceLineNo">284</span> while (it.hasNext()) {<a name="line.284"></a>
+<span class="sourceLineNo">285</span> final Map.Entry<String, Pair<String, String>> entry = it.next();<a name="line.285"></a>
+<span class="sourceLineNo">286</span><a name="line.286"></a>
+<span class="sourceLineNo">287</span> MasterProcedureProtos.RestoreParentToChildRegionsPair.Builder parentToChildrenPair =<a name="line.287"></a>
+<span class="sourceLineNo">288</span> MasterProcedureProtos.RestoreParentToChildRegionsPair.newBuilder()<a name="line.288"></a>
+<span class="sourceLineNo">289</span> .setParentRegionName(entry.getKey())<a name="line.289"></a>
+<span class="sourceLineNo">290</span> .setChild1RegionName(entry.getValue().getFirst())<a name="line.290"></a>
+<span class="sourceLineNo">291</span> .setChild2RegionName(entry.getValue().getSecond());<a name="line.291"></a>
+<span class="sourceLineNo">292</span> cloneSnapshotMsg.addParentToChildRegionsPairList(parentToChildrenPair);<a name="line.292"></a>
+<span class="sourceLineNo">293</span> }<a name="line.293"></a>
+<span class="sourceLineNo">294</span> }<a name="line.294"></a>
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+<span class="sourceLineNo">370</span><a name="line.370"></a>
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+<span class="sourceLineNo">387</span> /**<a name="line.387"></a>
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+<span class="sourceLineNo">408</span><a name="line.408"></a>
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+<span class="sourceLineNo">410</span><a name="line.410"></a>
+<span class="sourceLineNo">411</span> try {<a name="line.411"></a>
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+<span class="sourceLineNo">420</span> Preconditions.checkArgument(<a name="line.420"></a>
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+<span class="sourceLineNo">422</span> Preconditions.checkArgument(<a name="line.422"></a>
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+<span class="sourceLineNo">424</span><a name="line.424"></a>
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+<span class="sourceLineNo">428</span> LOG.info(msg);<a name="line.428"></a>
+<span class="sourceLineNo">429</span> monitorStatus.setStatus(msg + " Waiting for table to be enabled...");<a name="line.429"></a>
+<span class="sourceLineNo">430</span><a name="line.430"></a>
+<span class="sourceLineNo">431</span> // 2. Let the next step to add the regions to meta<a name="line.431"></a>
+<span class="sourceLineNo">432</span> return metaChanges.getRegionsToAdd();<a name="line.432"></a>
+<span class="sourceLineNo">433</span> } catch (Exception e) {<a name="line.433"></a>
+<span class="sourceLineNo">434</span> String msg = "clone snapshot=" + ClientSnapshotDescriptionUtils.toString(snapshot) +<a name="line.434"></a>
+<span class="sourceLineNo">435</span> " failed because " + e.getMessage();<a name="line.435"></a>
+<span class="sourceLineNo">436</span> LOG.error(msg, e);<a name="line.436"></a>
+<span class="sourceLineNo">437</span> IOException rse = new RestoreSnapshotException(msg, e,<a name="line.437"></a>
+<span class="sourceLineNo">438</span> ProtobufUtil.createSnapshotDesc(snapshot));<a name="line.438"></a>
+<span class="sourceLineNo">439</span><a name="line.439"></a>
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+<span class="sourceLineNo">442</span> throw rse;<a name="line.442"></a>
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+<span class="sourceLineNo">444</span> }<a name="line.444"></a>
+<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><a name="line.447"></a>
+<span class="sourceLineNo">448</span> /**<a name="line.448"></a>
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+<span class="sourceLineNo">451</span> * @throws IOException<a name="line.451"></a>
+<span class="sourceLineNo">452</span> */<a name="line.452"></a>
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+<span class="sourceLineNo">455</span> final TableDescriptor tableDescriptor,<a name="line.455"></a>
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+<span class="sourceLineNo">458</span> final MasterFileSystem mfs = env.getMasterServices().getMasterFileSystem();<a name="line.458"></a>
+<span class="sourceLineNo">459</span> final Path tempdir = mfs.getTempDir();<a name="line.459"></a>
+<span class="sourceLineNo">460</span><a name="line.460"></a>
+<span class="sourceLineNo">461</span> // 1. Create Table Descriptor<a name="line.461"></a>
+<span class="sourceLineNo">462</span> // using a copy of descriptor, table will be created enabling first<a name="line.462"></a>
+<span class="sourceLineNo">463</span> final Path tempTableDir = FSUtils.getTableDir(tempdir, tableDescriptor.getTableName());<a name="line.463"></a>
+<span class="sourceLineNo">464</span> ((FSTableDes
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