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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/01/30 15:18:39 UTC
[31/44] hbase-site git commit: Published site at .
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/a3fb6d74/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
index 22c90f0..2399814 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/MasterMetaBootstrap.html
@@ -32,149 +32,137 @@
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.HConstants;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.ServerName;<a name="line.26"></a>
-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.TableName;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.30"></a>
-<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.client.TableState;<a name="line.31"></a>
-<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.master.assignment.AssignmentManager;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.34"></a>
-<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.zookeeper.ZKUtil;<a name="line.35"></a>
-<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<a name="line.36"></a>
-<span class="sourceLineNo">037</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.37"></a>
-<span class="sourceLineNo">038</span>import org.apache.zookeeper.KeeperException;<a name="line.38"></a>
-<span class="sourceLineNo">039</span>import org.slf4j.Logger;<a name="line.39"></a>
-<span class="sourceLineNo">040</span>import org.slf4j.LoggerFactory;<a name="line.40"></a>
-<span class="sourceLineNo">041</span><a name="line.41"></a>
-<span class="sourceLineNo">042</span>/**<a name="line.42"></a>
-<span class="sourceLineNo">043</span> * Used by the HMaster on startup to split meta logs and assign the meta table.<a name="line.43"></a>
-<span class="sourceLineNo">044</span> */<a name="line.44"></a>
-<span class="sourceLineNo">045</span>@InterfaceAudience.Private<a name="line.45"></a>
-<span class="sourceLineNo">046</span>public class MasterMetaBootstrap {<a name="line.46"></a>
-<span class="sourceLineNo">047</span> private static final Logger LOG = LoggerFactory.getLogger(MasterMetaBootstrap.class);<a name="line.47"></a>
-<span class="sourceLineNo">048</span><a name="line.48"></a>
-<span class="sourceLineNo">049</span> private final MonitoredTask status;<a name="line.49"></a>
-<span class="sourceLineNo">050</span> private final HMaster master;<a name="line.50"></a>
-<span class="sourceLineNo">051</span><a name="line.51"></a>
-<span class="sourceLineNo">052</span> public MasterMetaBootstrap(final HMaster master, final MonitoredTask status) {<a name="line.52"></a>
-<span class="sourceLineNo">053</span> this.master = master;<a name="line.53"></a>
-<span class="sourceLineNo">054</span> this.status = status;<a name="line.54"></a>
-<span class="sourceLineNo">055</span> }<a name="line.55"></a>
-<span class="sourceLineNo">056</span><a name="line.56"></a>
-<span class="sourceLineNo">057</span> public void recoverMeta() throws InterruptedException, IOException {<a name="line.57"></a>
-<span class="sourceLineNo">058</span> master.recoverMeta();<a name="line.58"></a>
-<span class="sourceLineNo">059</span> master.getTableStateManager().start();<a name="line.59"></a>
-<span class="sourceLineNo">060</span> enableCrashedServerProcessing(false);<a name="line.60"></a>
-<span class="sourceLineNo">061</span> }<a name="line.61"></a>
-<span class="sourceLineNo">062</span><a name="line.62"></a>
-<span class="sourceLineNo">063</span> public void processDeadServers() {<a name="line.63"></a>
-<span class="sourceLineNo">064</span> // get a list for previously failed RS which need log splitting work<a name="line.64"></a>
-<span class="sourceLineNo">065</span> // we recover hbase:meta region servers inside master initialization and<a name="line.65"></a>
-<span class="sourceLineNo">066</span> // handle other failed servers in SSH in order to start up master node ASAP<a name="line.66"></a>
-<span class="sourceLineNo">067</span> Set<ServerName> previouslyFailedServers =<a name="line.67"></a>
-<span class="sourceLineNo">068</span> master.getMasterWalManager().getFailedServersFromLogFolders();<a name="line.68"></a>
-<span class="sourceLineNo">069</span><a name="line.69"></a>
-<span class="sourceLineNo">070</span> // Master has recovered hbase:meta region server and we put<a name="line.70"></a>
-<span class="sourceLineNo">071</span> // other failed region servers in a queue to be handled later by SSH<a name="line.71"></a>
-<span class="sourceLineNo">072</span> for (ServerName tmpServer : previouslyFailedServers) {<a name="line.72"></a>
-<span class="sourceLineNo">073</span> master.getServerManager().processDeadServer(tmpServer, true);<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><a name="line.76"></a>
-<span class="sourceLineNo">077</span> public void assignMetaReplicas()<a name="line.77"></a>
-<span class="sourceLineNo">078</span> throws IOException, InterruptedException, KeeperException {<a name="line.78"></a>
-<span class="sourceLineNo">079</span> int numReplicas = master.getConfiguration().getInt(HConstants.META_REPLICAS_NUM,<a name="line.79"></a>
-<span class="sourceLineNo">080</span> HConstants.DEFAULT_META_REPLICA_NUM);<a name="line.80"></a>
-<span class="sourceLineNo">081</span> for (int i = 1; i < numReplicas; i++) {<a name="line.81"></a>
-<span class="sourceLineNo">082</span> assignMeta(i);<a name="line.82"></a>
-<span class="sourceLineNo">083</span> }<a name="line.83"></a>
-<span class="sourceLineNo">084</span> unassignExcessMetaReplica(numReplicas);<a name="line.84"></a>
-<span class="sourceLineNo">085</span> }<a name="line.85"></a>
-<span class="sourceLineNo">086</span><a name="line.86"></a>
-<span class="sourceLineNo">087</span> private void unassignExcessMetaReplica(int numMetaReplicasConfigured) {<a name="line.87"></a>
-<span class="sourceLineNo">088</span> final ZKWatcher zooKeeper = master.getZooKeeper();<a name="line.88"></a>
-<span class="sourceLineNo">089</span> // unassign the unneeded replicas (for e.g., if the previous master was configured<a name="line.89"></a>
-<span class="sourceLineNo">090</span> // with a replication of 3 and now it is 2, we need to unassign the 1 unneeded replica)<a name="line.90"></a>
-<span class="sourceLineNo">091</span> try {<a name="line.91"></a>
-<span class="sourceLineNo">092</span> List<String> metaReplicaZnodes = zooKeeper.getMetaReplicaNodes();<a name="line.92"></a>
-<span class="sourceLineNo">093</span> for (String metaReplicaZnode : metaReplicaZnodes) {<a name="line.93"></a>
-<span class="sourceLineNo">094</span> int replicaId = zooKeeper.znodePaths.getMetaReplicaIdFromZnode(metaReplicaZnode);<a name="line.94"></a>
-<span class="sourceLineNo">095</span> if (replicaId >= numMetaReplicasConfigured) {<a name="line.95"></a>
-<span class="sourceLineNo">096</span> RegionState r = MetaTableLocator.getMetaRegionState(zooKeeper, replicaId);<a name="line.96"></a>
-<span class="sourceLineNo">097</span> LOG.info("Closing excess replica of meta region " + r.getRegion());<a name="line.97"></a>
-<span class="sourceLineNo">098</span> // send a close and wait for a max of 30 seconds<a name="line.98"></a>
-<span class="sourceLineNo">099</span> ServerManager.closeRegionSilentlyAndWait(master.getClusterConnection(),<a name="line.99"></a>
-<span class="sourceLineNo">100</span> r.getServerName(), r.getRegion(), 30000);<a name="line.100"></a>
-<span class="sourceLineNo">101</span> ZKUtil.deleteNode(zooKeeper, zooKeeper.znodePaths.getZNodeForReplica(replicaId));<a name="line.101"></a>
-<span class="sourceLineNo">102</span> }<a name="line.102"></a>
-<span class="sourceLineNo">103</span> }<a name="line.103"></a>
-<span class="sourceLineNo">104</span> } catch (Exception ex) {<a name="line.104"></a>
-<span class="sourceLineNo">105</span> // ignore the exception since we don't want the master to be wedged due to potential<a name="line.105"></a>
-<span class="sourceLineNo">106</span> // issues in the cleanup of the extra regions. We can do that cleanup via hbck or manually<a name="line.106"></a>
-<span class="sourceLineNo">107</span> LOG.warn("Ignoring exception " + ex);<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> /**<a name="line.111"></a>
-<span class="sourceLineNo">112</span> * Check <code>hbase:meta</code> is assigned. If not, assign it.<a name="line.112"></a>
-<span class="sourceLineNo">113</span> */<a name="line.113"></a>
-<span class="sourceLineNo">114</span> protected void assignMeta(int replicaId)<a name="line.114"></a>
-<span class="sourceLineNo">115</span> throws InterruptedException, IOException, KeeperException {<a name="line.115"></a>
-<span class="sourceLineNo">116</span> final AssignmentManager assignmentManager = master.getAssignmentManager();<a name="line.116"></a>
+<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.RegionInfo;<a name="line.27"></a>
+<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.RegionInfoBuilder;<a name="line.28"></a>
+<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.client.RegionReplicaUtil;<a name="line.29"></a>
+<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.master.assignment.AssignmentManager;<a name="line.30"></a>
+<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.monitoring.MonitoredTask;<a name="line.31"></a>
+<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;<a name="line.32"></a>
+<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.zookeeper.ZKUtil;<a name="line.33"></a>
+<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.zookeeper.ZKWatcher;<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.apache.zookeeper.KeeperException;<a name="line.36"></a>
+<span class="sourceLineNo">037</span>import org.slf4j.Logger;<a name="line.37"></a>
+<span class="sourceLineNo">038</span>import org.slf4j.LoggerFactory;<a name="line.38"></a>
+<span class="sourceLineNo">039</span><a name="line.39"></a>
+<span class="sourceLineNo">040</span>/**<a name="line.40"></a>
+<span class="sourceLineNo">041</span> * Used by the HMaster on startup to split meta logs and assign the meta table.<a name="line.41"></a>
+<span class="sourceLineNo">042</span> */<a name="line.42"></a>
+<span class="sourceLineNo">043</span>@InterfaceAudience.Private<a name="line.43"></a>
+<span class="sourceLineNo">044</span>public class MasterMetaBootstrap {<a name="line.44"></a>
+<span class="sourceLineNo">045</span> private static final Logger LOG = LoggerFactory.getLogger(MasterMetaBootstrap.class);<a name="line.45"></a>
+<span class="sourceLineNo">046</span><a name="line.46"></a>
+<span class="sourceLineNo">047</span> private final MonitoredTask status;<a name="line.47"></a>
+<span class="sourceLineNo">048</span> private final HMaster master;<a name="line.48"></a>
+<span class="sourceLineNo">049</span><a name="line.49"></a>
+<span class="sourceLineNo">050</span> public MasterMetaBootstrap(final HMaster master, final MonitoredTask status) {<a name="line.50"></a>
+<span class="sourceLineNo">051</span> this.master = master;<a name="line.51"></a>
+<span class="sourceLineNo">052</span> this.status = status;<a name="line.52"></a>
+<span class="sourceLineNo">053</span> }<a name="line.53"></a>
+<span class="sourceLineNo">054</span><a name="line.54"></a>
+<span class="sourceLineNo">055</span> public void recoverMeta() throws InterruptedException, IOException {<a name="line.55"></a>
+<span class="sourceLineNo">056</span> master.recoverMeta();<a name="line.56"></a>
+<span class="sourceLineNo">057</span> master.getTableStateManager().start();<a name="line.57"></a>
+<span class="sourceLineNo">058</span> enableCrashedServerProcessing(false);<a name="line.58"></a>
+<span class="sourceLineNo">059</span> }<a name="line.59"></a>
+<span class="sourceLineNo">060</span><a name="line.60"></a>
+<span class="sourceLineNo">061</span> public void processDeadServers() {<a name="line.61"></a>
+<span class="sourceLineNo">062</span> // get a list for previously failed RS which need log splitting work<a name="line.62"></a>
+<span class="sourceLineNo">063</span> // we recover hbase:meta region servers inside master initialization and<a name="line.63"></a>
+<span class="sourceLineNo">064</span> // handle other failed servers in SSH in order to start up master node ASAP<a name="line.64"></a>
+<span class="sourceLineNo">065</span> Set<ServerName> previouslyFailedServers =<a name="line.65"></a>
+<span class="sourceLineNo">066</span> master.getMasterWalManager().getFailedServersFromLogFolders();<a name="line.66"></a>
+<span class="sourceLineNo">067</span><a name="line.67"></a>
+<span class="sourceLineNo">068</span> // Master has recovered hbase:meta region server and we put<a name="line.68"></a>
+<span class="sourceLineNo">069</span> // other failed region servers in a queue to be handled later by SSH<a name="line.69"></a>
+<span class="sourceLineNo">070</span> for (ServerName tmpServer : previouslyFailedServers) {<a name="line.70"></a>
+<span class="sourceLineNo">071</span> master.getServerManager().processDeadServer(tmpServer, true);<a name="line.71"></a>
+<span class="sourceLineNo">072</span> }<a name="line.72"></a>
+<span class="sourceLineNo">073</span> }<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> * For assigning hbase:meta replicas only.<a name="line.76"></a>
+<span class="sourceLineNo">077</span> * TODO: The way this assign runs, nothing but chance to stop all replicas showing up on same<a name="line.77"></a>
+<span class="sourceLineNo">078</span> * server as the hbase:meta region.<a name="line.78"></a>
+<span class="sourceLineNo">079</span> */<a name="line.79"></a>
+<span class="sourceLineNo">080</span> protected void assignMetaReplicas()<a name="line.80"></a>
+<span class="sourceLineNo">081</span> throws IOException, InterruptedException, KeeperException {<a name="line.81"></a>
+<span class="sourceLineNo">082</span> int numReplicas = master.getConfiguration().getInt(HConstants.META_REPLICAS_NUM,<a name="line.82"></a>
+<span class="sourceLineNo">083</span> HConstants.DEFAULT_META_REPLICA_NUM);<a name="line.83"></a>
+<span class="sourceLineNo">084</span> if (numReplicas <= 1) {<a name="line.84"></a>
+<span class="sourceLineNo">085</span> // No replicaas to assign. Return.<a name="line.85"></a>
+<span class="sourceLineNo">086</span> return;<a name="line.86"></a>
+<span class="sourceLineNo">087</span> }<a name="line.87"></a>
+<span class="sourceLineNo">088</span> final AssignmentManager assignmentManager = master.getAssignmentManager();<a name="line.88"></a>
+<span class="sourceLineNo">089</span> if (!assignmentManager.isMetaInitialized()) {<a name="line.89"></a>
+<span class="sourceLineNo">090</span> throw new IllegalStateException("hbase:meta must be initialized first before we can " +<a name="line.90"></a>
+<span class="sourceLineNo">091</span> "assign out its replicas");<a name="line.91"></a>
+<span class="sourceLineNo">092</span> }<a name="line.92"></a>
+<span class="sourceLineNo">093</span> ServerName metaServername =<a name="line.93"></a>
+<span class="sourceLineNo">094</span> this.master.getMetaTableLocator().getMetaRegionLocation(this.master.getZooKeeper());<a name="line.94"></a>
+<span class="sourceLineNo">095</span> for (int i = 1; i < numReplicas; i++) {<a name="line.95"></a>
+<span class="sourceLineNo">096</span> // Get current meta state for replica from zk.<a name="line.96"></a>
+<span class="sourceLineNo">097</span> RegionState metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper(), i);<a name="line.97"></a>
+<span class="sourceLineNo">098</span> RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(<a name="line.98"></a>
+<span class="sourceLineNo">099</span> RegionInfoBuilder.FIRST_META_REGIONINFO, i);<a name="line.99"></a>
+<span class="sourceLineNo">100</span> LOG.debug(hri.getRegionNameAsString() + " replica region state from zookeeper=" + metaState);<a name="line.100"></a>
+<span class="sourceLineNo">101</span> if (metaServername.equals(metaState.getServerName())) {<a name="line.101"></a>
+<span class="sourceLineNo">102</span> metaState = null;<a name="line.102"></a>
+<span class="sourceLineNo">103</span> LOG.info(hri.getRegionNameAsString() +<a name="line.103"></a>
+<span class="sourceLineNo">104</span> " old location is same as current hbase:meta location; setting location as null...");<a name="line.104"></a>
+<span class="sourceLineNo">105</span> }<a name="line.105"></a>
+<span class="sourceLineNo">106</span> // These assigns run inline. All is blocked till they complete. Only interrupt is shutting<a name="line.106"></a>
+<span class="sourceLineNo">107</span> // down hosting server which calls AM#stop.<a name="line.107"></a>
+<span class="sourceLineNo">108</span> if (metaState != null && metaState.getServerName() != null) {<a name="line.108"></a>
+<span class="sourceLineNo">109</span> // Try to retain old assignment.<a name="line.109"></a>
+<span class="sourceLineNo">110</span> assignmentManager.assign(hri, metaState.getServerName());<a name="line.110"></a>
+<span class="sourceLineNo">111</span> } else {<a name="line.111"></a>
+<span class="sourceLineNo">112</span> assignmentManager.assign(hri);<a name="line.112"></a>
+<span class="sourceLineNo">113</span> }<a name="line.113"></a>
+<span class="sourceLineNo">114</span> }<a name="line.114"></a>
+<span class="sourceLineNo">115</span> unassignExcessMetaReplica(numReplicas);<a name="line.115"></a>
+<span class="sourceLineNo">116</span> }<a name="line.116"></a>
<span class="sourceLineNo">117</span><a name="line.117"></a>
-<span class="sourceLineNo">118</span> // Work on meta region<a name="line.118"></a>
-<span class="sourceLineNo">119</span> // TODO: Unimplemented<a name="line.119"></a>
-<span class="sourceLineNo">120</span> // long timeout =<a name="line.120"></a>
-<span class="sourceLineNo">121</span> // master.getConfiguration().getLong("hbase.catalog.verification.timeout", 1000);<a name="line.121"></a>
-<span class="sourceLineNo">122</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> status.setStatus("Assigning hbase:meta region");<a name="line.123"></a>
-<span class="sourceLineNo">124</span> } else {<a name="line.124"></a>
-<span class="sourceLineNo">125</span> status.setStatus("Assigning hbase:meta region, replicaId " + replicaId);<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> // Get current meta state from zk.<a name="line.128"></a>
-<span class="sourceLineNo">129</span> RegionState metaState = MetaTableLocator.getMetaRegionState(master.getZooKeeper(), replicaId);<a name="line.129"></a>
-<span class="sourceLineNo">130</span> LOG.debug("meta state from zookeeper: " + metaState);<a name="line.130"></a>
-<span class="sourceLineNo">131</span> RegionInfo hri = RegionReplicaUtil.getRegionInfoForReplica(<a name="line.131"></a>
-<span class="sourceLineNo">132</span> RegionInfoBuilder.FIRST_META_REGIONINFO, replicaId);<a name="line.132"></a>
-<span class="sourceLineNo">133</span> assignmentManager.assignMeta(hri, metaState.getServerName());<a name="line.133"></a>
-<span class="sourceLineNo">134</span><a name="line.134"></a>
-<span class="sourceLineNo">135</span> if (replicaId == RegionInfo.DEFAULT_REPLICA_ID) {<a name="line.135"></a>
-<span class="sourceLineNo">136</span> // TODO: should we prevent from using state manager before meta was initialized?<a name="line.136"></a>
-<span class="sourceLineNo">137</span> // tableStateManager.start();<a name="line.137"></a>
-<span class="sourceLineNo">138</span> master.getTableStateManager()<a name="line.138"></a>
-<span class="sourceLineNo">139</span> .setTableState(TableName.META_TABLE_NAME, TableState.State.ENABLED);<a name="line.139"></a>
-<span class="sourceLineNo">140</span> }<a name="line.140"></a>
+<span class="sourceLineNo">118</span> private void unassignExcessMetaReplica(int numMetaReplicasConfigured) {<a name="line.118"></a>
+<span class="sourceLineNo">119</span> final ZKWatcher zooKeeper = master.getZooKeeper();<a name="line.119"></a>
+<span class="sourceLineNo">120</span> // unassign the unneeded replicas (for e.g., if the previous master was configured<a name="line.120"></a>
+<span class="sourceLineNo">121</span> // with a replication of 3 and now it is 2, we need to unassign the 1 unneeded replica)<a name="line.121"></a>
+<span class="sourceLineNo">122</span> try {<a name="line.122"></a>
+<span class="sourceLineNo">123</span> List<String> metaReplicaZnodes = zooKeeper.getMetaReplicaNodes();<a name="line.123"></a>
+<span class="sourceLineNo">124</span> for (String metaReplicaZnode : metaReplicaZnodes) {<a name="line.124"></a>
+<span class="sourceLineNo">125</span> int replicaId = zooKeeper.znodePaths.getMetaReplicaIdFromZnode(metaReplicaZnode);<a name="line.125"></a>
+<span class="sourceLineNo">126</span> if (replicaId >= numMetaReplicasConfigured) {<a name="line.126"></a>
+<span class="sourceLineNo">127</span> RegionState r = MetaTableLocator.getMetaRegionState(zooKeeper, replicaId);<a name="line.127"></a>
+<span class="sourceLineNo">128</span> LOG.info("Closing excess replica of meta region " + r.getRegion());<a name="line.128"></a>
+<span class="sourceLineNo">129</span> // send a close and wait for a max of 30 seconds<a name="line.129"></a>
+<span class="sourceLineNo">130</span> ServerManager.closeRegionSilentlyAndWait(master.getClusterConnection(),<a name="line.130"></a>
+<span class="sourceLineNo">131</span> r.getServerName(), r.getRegion(), 30000);<a name="line.131"></a>
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+<span class="sourceLineNo">134</span> }<a name="line.134"></a>
+<span class="sourceLineNo">135</span> } catch (Exception ex) {<a name="line.135"></a>
+<span class="sourceLineNo">136</span> // ignore the exception since we don't want the master to be wedged due to potential<a name="line.136"></a>
+<span class="sourceLineNo">137</span> // issues in the cleanup of the extra regions. We can do that cleanup via hbck or manually<a name="line.137"></a>
+<span class="sourceLineNo">138</span> LOG.warn("Ignoring exception " + ex);<a name="line.138"></a>
+<span class="sourceLineNo">139</span> }<a name="line.139"></a>
+<span class="sourceLineNo">140</span> }<a name="line.140"></a>
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-<span class="sourceLineNo">145</span> // if the meta region server is died at this time, we need it to be re-assigned<a name="line.145"></a>
-<span class="sourceLineNo">146</span> // by SSH so that system tables can be assigned.<a name="line.146"></a>
-<span class="sourceLineNo">147</span> // No need to wait for meta is assigned = 0 when meta is just verified.<a name="line.147"></a>
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-<span class="sourceLineNo">149</span> LOG.info("hbase:meta with replicaId " + replicaId + ", location="<a name="line.149"></a>
-<span class="sourceLineNo">150</span> + master.getMetaTableLocator().getMetaRegionLocation(master.getZooKeeper(), replicaId));<a name="line.150"></a>
-<span class="sourceLineNo">151</span> status.setStatus("META assigned.");<a name="line.151"></a>
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-<span class="sourceLineNo">160</span> if (!master.isServerCrashProcessingEnabled()) {<a name="line.160"></a>
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-<span class="sourceLineNo">168</span> }<a name="line.168"></a>
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+<span class="sourceLineNo">144</span> // If crashed server processing is disabled, we enable it and expire those dead but not expired<a name="line.144"></a>
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+<span class="sourceLineNo">148</span> if (!master.isServerCrashProcessingEnabled()) {<a name="line.148"></a>
+<span class="sourceLineNo">149</span> master.setServerCrashProcessingEnabled(true);<a name="line.149"></a>
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+<span class="sourceLineNo">151</span> }<a name="line.151"></a>
+<span class="sourceLineNo">152</span><a name="line.152"></a>
+<span class="sourceLineNo">153</span> if (waitForMeta) {<a name="line.153"></a>
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+<span class="sourceLineNo">155</span> }<a name="line.155"></a>
+<span class="sourceLineNo">156</span> }<a name="line.156"></a>
+<span class="sourceLineNo">157</span>}<a name="line.157"></a>