Repository: hbase-site
Updated Branches:
  refs/heads/asf-site d0f540a20 -> 4f8b84247


http://git-wip-us.apache.org/repos/asf/hbase-site/blob/4f8b8424/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
----------------------------------------------------------------------
diff --git 
a/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html 
b/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
index f1c0bc3..88147e4 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/ServerManager.html
@@ -610,585 +610,588 @@
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 <span class="sourceLineNo">603</span>    }<a name="line.603"></a>
 <span class="sourceLineNo">604</span>    LOG.info("Processing expiration of " 
+ serverName + " on " + this.master.getServerName());<a name="line.604"></a>
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master.getAssignmentManager().submitServerCrash(serverName, true);<a 
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listener.serverRemoved(serverName);<a name="line.610"></a>
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(this.drainingServers.contains(sn)) {<a name="line.667"></a>
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this.drainingServers.add(sn);<a name="line.673"></a>
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WAIT_ON_REGIONSERVERS_MAXTOSTART, maxToStart,<a name="line.806"></a>
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WAIT_ON_REGIONSERVERS_MINTOSTART, minToStart));<a name="line.807"></a>
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destServers.removeAll(drainingServersCopy);<a name="line.978"></a>
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master.getAssignmentManager().submitServerCrash(serverName, true);<a 
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listener.serverRemoved(serverName);<a name="line.612"></a>
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{<a name="line.616"></a>
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flushedSeqIdFlusher.triggerNow();<a name="line.617"></a>
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(!this.onlineServers.containsKey(sn)) {<a name="line.626"></a>
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removeServerFromDrainList(final ServerName sn) {<a name="line.642"></a>
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online.  ServerName is of the form:<a name="line.643"></a>
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&lt;startcode&gt;<a name="line.644"></a>
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draining servers lists.<a name="line.650"></a>
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this.drainingServers.remove(sn);<a name="line.651"></a>
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currently online. " +<a name="line.664"></a>
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it to draining list.");<a name="line.665"></a>
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(this.drainingServers.contains(sn)) {<a name="line.670"></a>
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it again.");<a name="line.672"></a>
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draining server list.");<a name="line.675"></a>
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this.drainingServers.add(sn);<a name="line.676"></a>
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newRpcController() {<a name="line.681"></a>
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server to warmup the specified region.<a name="line.686"></a>
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close request because it either does not<a name="line.688"></a>
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region is being split.<a name="line.689"></a>
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region<a name="line.690"></a>
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name="line.691"></a>
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server,<a name="line.693"></a>
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admin = getRsAdmin(server);<a name="line.697"></a>
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newRpcController();<a name="line.698"></a>
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ProtobufUtil.warmupRegion(controller, admin, region);<a name="line.699"></a>
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name="line.702"></a>
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up to timeout ms<a name="line.708"></a>
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the active hmaster.<a name="line.709"></a>
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long timeout) throws IOException, InterruptedException {<a name="line.712"></a>
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connection.getAdmin(server);<a name="line.713"></a>
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connection.getRpcControllerFactory().newController();<a name="line.714"></a>
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ProtobufUtil.closeRegion(controller, rs, server, region.getRegionName());<a 
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name="line.717"></a>
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ProtobufUtil.getRegionInfo(controller, rs, region.getRegionName());<a 
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remote regionserver named &lt;code&gt;sn&lt;/code&gt;<a name="line.741"></a>
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name="line.742"></a>
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getRsAdmin(final ServerName sn)<a name="line.745"></a>
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name="line.746"></a>
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" + sn.toString());<a name="line.749"></a>
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(sn.equals(master.getServerName()) &amp;&amp; master instanceof HRegionServer) 
{<a name="line.750"></a>
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server now, see HBASE-10569 for details<a name="line.751"></a>
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((HRegionServer)master).getRSRpcServices();<a name="line.752"></a>
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+<span class="sourceLineNo">760</span><a name="line.760"></a>
+<span class="sourceLineNo">761</span>  /**<a name="line.761"></a>
+<span class="sourceLineNo">762</span>   * Calculate min necessary to start. 
This is not an absolute. It is just<a name="line.762"></a>
+<span class="sourceLineNo">763</span>   * a friction that will cause us hang 
around a bit longer waiting on<a name="line.763"></a>
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name="line.764"></a>
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name="line.767"></a>
+<span class="sourceLineNo">768</span>      // If in maintenance mode, then 
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(LoadBalancer.isTablesOnMaster(master.getConfiguration()) &amp;&amp;<a 
name="line.773"></a>
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LoadBalancer.isSystemTablesOnlyOnMaster(master.getConfiguration())) {<a 
name="line.774"></a>
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second server.<a name="line.776"></a>
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this.master.getConfiguration().getInt(WAIT_ON_REGIONSERVERS_MINTOSTART, -1);<a 
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report in.<a name="line.786"></a>
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condition is met:<a name="line.787"></a>
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name="line.788"></a>
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'hbase.master.wait.on.regionservers.maxtostart' number of<a name="line.789"></a>
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name="line.790"></a>
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'hbase.master.wait.on.regionservers.mintostart' is reached AND<a 
name="line.791"></a>
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server in for<a name="line.792"></a>
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'hbase.master.wait.on.regionservers.interval' time AND<a name="line.793"></a>
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'hbase.master.wait.on.regionservers.timeout' is reached<a name="line.794"></a>
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name="line.796"></a>
+<span class="sourceLineNo">797</span>   */<a name="line.797"></a>
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waitForRegionServers(MonitoredTask status) throws InterruptedException {<a 
name="line.798"></a>
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this.master.getConfiguration().<a name="line.799"></a>
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getLong(WAIT_ON_REGIONSERVERS_INTERVAL, 1500);<a name="line.800"></a>
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this.master.getConfiguration().<a name="line.801"></a>
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getLong(WAIT_ON_REGIONSERVERS_TIMEOUT, 4500);<a name="line.802"></a>
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friction making us wait longer on server checkin.<a name="line.803"></a>
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name="line.804"></a>
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this.master.getConfiguration().<a name="line.805"></a>
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getInt(WAIT_ON_REGIONSERVERS_MAXTOSTART, Integer.MAX_VALUE);<a 
name="line.806"></a>
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name="line.807"></a>
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of '%s' (%d) is set less than '%s' (%d), ignoring.",<a name="line.808"></a>
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WAIT_ON_REGIONSERVERS_MAXTOSTART, maxToStart,<a name="line.809"></a>
+<span class="sourceLineNo">810</span>          
WAIT_ON_REGIONSERVERS_MINTOSTART, minToStart));<a name="line.810"></a>
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name="line.811"></a>
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System.currentTimeMillis();<a name="line.814"></a>
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name="line.819"></a>
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name="line.820"></a>
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to read. We try to comment it in below but in essence:<a name="line.821"></a>
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the number of regionservers that have checked-in is<a name="line.822"></a>
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these conditions will be true near universally.<a name="line.823"></a>
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of the following three conditions are true:<a name="line.824"></a>
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registered is &lt; interval (means servers are actively checking in).<a 
name="line.825"></a>
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timeout.<a name="line.826"></a>
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minimum.<a name="line.827"></a>
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this.listeners) {<a name="line.828"></a>
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name="line.831"></a>
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&gt; now || timeout &gt; slept || count &lt; minToStart)) {<a 
name="line.832"></a>
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time or if there is a change<a name="line.833"></a>
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lastLogTime + interval &lt; now) {<a name="line.834"></a>
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name="line.835"></a>
+<span class="sourceLineNo">836</span>        String msg =<a 
name="line.836"></a>
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count=" + count + "; waited="+<a name="line.837"></a>
+<span class="sourceLineNo">838</span>                slept + "ms, expecting 
min=" + minToStart + " server(s), max="+ getStrForMax(maxToStart) +<a 
name="line.838"></a>
+<span class="sourceLineNo">839</span>                " server(s), " + 
"timeout=" + timeout + "ms, lastChange=" + (lastCountChange - now) + "ms";<a 
name="line.839"></a>
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name="line.840"></a>
+<span class="sourceLineNo">841</span>        status.setStatus(msg);<a 
name="line.841"></a>
+<span class="sourceLineNo">842</span>      }<a name="line.842"></a>
+<span class="sourceLineNo">843</span><a name="line.843"></a>
+<span class="sourceLineNo">844</span>      // We sleep for some time<a 
name="line.844"></a>
+<span class="sourceLineNo">845</span>      final long sleepTime = 50;<a 
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+<span class="sourceLineNo">846</span>      Thread.sleep(sleepTime);<a 
name="line.846"></a>
+<span class="sourceLineNo">847</span>      now =  
System.currentTimeMillis();<a name="line.847"></a>
+<span class="sourceLineNo">848</span>      slept = now - startTime;<a 
name="line.848"></a>
+<span class="sourceLineNo">849</span><a name="line.849"></a>
+<span class="sourceLineNo">850</span>      oldCount = count;<a 
name="line.850"></a>
+<span class="sourceLineNo">851</span>      count = countOfRegionServers();<a 
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name="line.852"></a>
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name="line.853"></a>
+<span class="sourceLineNo">854</span>      }<a name="line.854"></a>
+<span class="sourceLineNo">855</span>    }<a name="line.855"></a>
+<span class="sourceLineNo">856</span>    // Did we exit the loop because 
cluster is going down?<a name="line.856"></a>
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name="line.857"></a>
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+<span class="sourceLineNo">860</span>    LOG.info("Finished waiting on 
RegionServer count=" + count + "; waited=" + slept + "ms," +<a 
name="line.860"></a>
+<span class="sourceLineNo">861</span>        " expected min=" + minToStart + " 
server(s), max=" +  getStrForMax(maxToStart) + " server(s),"+<a 
name="line.861"></a>
+<span class="sourceLineNo">862</span>        " master is "+ 
(this.master.isStopped() ? "stopped.": "running"));<a name="line.862"></a>
+<span class="sourceLineNo">863</span>  }<a name="line.863"></a>
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max) {<a name="line.865"></a>
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"NO_LIMIT": Integer.toString(max);<a name="line.866"></a>
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+<span class="sourceLineNo">868</span><a name="line.868"></a>
+<span class="sourceLineNo">869</span>  /**<a name="line.869"></a>
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of online servers.<a name="line.870"></a>
+<span class="sourceLineNo">871</span>   */<a name="line.871"></a>
+<span class="sourceLineNo">872</span>  public List&lt;ServerName&gt; 
getOnlineServersList() {<a name="line.872"></a>
+<span class="sourceLineNo">873</span>    // TODO: optimize the load balancer 
call so we don't need to make a new list<a name="line.873"></a>
+<span class="sourceLineNo">874</span>    // TODO: FIX. THIS IS POPULAR CALL.<a 
name="line.874"></a>
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ArrayList&lt;&gt;(this.onlineServers.keySet());<a name="line.875"></a>
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+<span class="sourceLineNo">877</span><a name="line.877"></a>
+<span class="sourceLineNo">878</span>  /**<a name="line.878"></a>
+<span class="sourceLineNo">879</span>   * @param keys The target server name<a 
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-<span class="sourceLineNo">1101</span>  }<a name="line.1101"></a>
-<span class="sourceLineNo">1102</span><a name="line.1102"></a>
-<span class="sourceLineNo">1103</span>  /**<a name="line.1103"></a>
-<span class="sourceLineNo">1104</span>   * Load last flushed sequence id of 
each region from HDFS, if persisted<a name="line.1104"></a>
-<span class="sourceLineNo">1105</span>   */<a name="line.1105"></a>
-<span class="sourceLineNo">1106</span>  public void 
loadLastFlushedSequenceIds() throws IOException {<a name="line.1106"></a>
-<span class="sourceLineNo">1107</span>    if (!persistFlushedSequenceId) {<a 
name="line.1107"></a>
-<span class="sourceLineNo">1108</span>      return;<a name="line.1108"></a>
-<span class="sourceLineNo">1109</span>    }<a name="line.1109"></a>
-<span class="sourceLineNo">1110</span>    Configuration conf = 
master.getConfiguration();<a name="line.1110"></a>
-<span class="sourceLineNo">1111</span>    Path rootDir = 
FSUtils.getRootDir(conf);<a name="line.1111"></a>
-<span class="sourceLineNo">1112</span>    Path lastFlushedSeqIdPath = new 
Path(rootDir, LAST_FLUSHED_SEQ_ID_FILE);<a name="line.1112"></a>
-<span class="sourceLineNo">1113</span>    FileSystem fs = 
FileSystem.get(conf);<a name="line.1113"></a>
-<span class="sourceLineNo">1114</span>    if 
(!fs.exists(lastFlushedSeqIdPath)) {<a name="line.1114"></a>
-<span class="sourceLineNo">1115</span>  

<TRUNCATED>

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