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 @@ <span class="sourceLineNo">602</span> return false;<a name="line.602"></a> <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> -<span class="sourceLineNo">605</span> master.getAssignmentManager().submitServerCrash(serverName, true);<a name="line.605"></a> -<span class="sourceLineNo">606</span><a name="line.606"></a> -<span class="sourceLineNo">607</span> // Tell our listeners that a server was removed<a name="line.607"></a> -<span class="sourceLineNo">608</span> if (!this.listeners.isEmpty()) {<a name="line.608"></a> -<span class="sourceLineNo">609</span> for (ServerListener listener : this.listeners) {<a name="line.609"></a> -<span class="sourceLineNo">610</span> listener.serverRemoved(serverName);<a name="line.610"></a> -<span class="sourceLineNo">611</span> }<a name="line.611"></a> -<span class="sourceLineNo">612</span> }<a name="line.612"></a> -<span class="sourceLineNo">613</span> // trigger a persist of flushedSeqId<a name="line.613"></a> -<span class="sourceLineNo">614</span> if (flushedSeqIdFlusher != null) {<a name="line.614"></a> -<span class="sourceLineNo">615</span> flushedSeqIdFlusher.triggerNow();<a name="line.615"></a> -<span class="sourceLineNo">616</span> }<a name="line.616"></a> -<span class="sourceLineNo">617</span> return true;<a name="line.617"></a> -<span class="sourceLineNo">618</span> }<a name="line.618"></a> -<span class="sourceLineNo">619</span><a name="line.619"></a> -<span class="sourceLineNo">620</span> @VisibleForTesting<a name="line.620"></a> -<span class="sourceLineNo">621</span> public void moveFromOnlineToDeadServers(final ServerName sn) {<a name="line.621"></a> -<span class="sourceLineNo">622</span> synchronized (onlineServers) {<a name="line.622"></a> -<span class="sourceLineNo">623</span> if (!this.onlineServers.containsKey(sn)) {<a name="line.623"></a> -<span class="sourceLineNo">624</span> LOG.trace("Expiration of {} but server not online", sn);<a name="line.624"></a> -<span class="sourceLineNo">625</span> }<a name="line.625"></a> -<span class="sourceLineNo">626</span> // Remove the server from the known servers lists and update load info BUT<a name="line.626"></a> -<span class="sourceLineNo">627</span> // add to deadservers first; do this so it'll show in dead servers list if<a name="line.627"></a> -<span class="sourceLineNo">628</span> // not in online servers list.<a name="line.628"></a> -<span class="sourceLineNo">629</span> this.deadservers.add(sn);<a name="line.629"></a> -<span class="sourceLineNo">630</span> this.onlineServers.remove(sn);<a name="line.630"></a> -<span class="sourceLineNo">631</span> onlineServers.notifyAll();<a name="line.631"></a> -<span class="sourceLineNo">632</span> }<a name="line.632"></a> -<span class="sourceLineNo">633</span> this.rsAdmins.remove(sn);<a name="line.633"></a> -<span class="sourceLineNo">634</span> }<a name="line.634"></a> -<span class="sourceLineNo">635</span><a name="line.635"></a> -<span class="sourceLineNo">636</span> /*<a name="line.636"></a> -<span class="sourceLineNo">637</span> * Remove the server from the drain list.<a name="line.637"></a> -<span class="sourceLineNo">638</span> */<a name="line.638"></a> -<span class="sourceLineNo">639</span> public synchronized boolean removeServerFromDrainList(final ServerName sn) {<a name="line.639"></a> -<span class="sourceLineNo">640</span> // Warn if the server (sn) is not online. ServerName is of the form:<a name="line.640"></a> -<span class="sourceLineNo">641</span> // <hostname> , <port> , <startcode><a name="line.641"></a> -<span class="sourceLineNo">642</span><a name="line.642"></a> -<span class="sourceLineNo">643</span> if (!this.isServerOnline(sn)) {<a name="line.643"></a> -<span class="sourceLineNo">644</span> LOG.warn("Server " + sn + " is not currently online. " +<a name="line.644"></a> -<span class="sourceLineNo">645</span> "Removing from draining list anyway, as requested.");<a name="line.645"></a> -<span class="sourceLineNo">646</span> }<a name="line.646"></a> -<span class="sourceLineNo">647</span> // Remove the server from the draining servers lists.<a name="line.647"></a> -<span class="sourceLineNo">648</span> return this.drainingServers.remove(sn);<a name="line.648"></a> -<span class="sourceLineNo">649</span> }<a name="line.649"></a> -<span class="sourceLineNo">650</span><a name="line.650"></a> -<span class="sourceLineNo">651</span> /**<a name="line.651"></a> -<span class="sourceLineNo">652</span> * Add the server to the drain list.<a name="line.652"></a> -<span class="sourceLineNo">653</span> * @param sn<a name="line.653"></a> -<span class="sourceLineNo">654</span> * @return True if the server is added or the server is already on the drain list.<a name="line.654"></a> -<span class="sourceLineNo">655</span> */<a name="line.655"></a> -<span class="sourceLineNo">656</span> public synchronized boolean addServerToDrainList(final ServerName sn) {<a name="line.656"></a> -<span class="sourceLineNo">657</span> // Warn if the server (sn) is not online. ServerName is of the form:<a name="line.657"></a> -<span class="sourceLineNo">658</span> // <hostname> , <port> , <startcode><a name="line.658"></a> -<span class="sourceLineNo">659</span><a name="line.659"></a> -<span class="sourceLineNo">660</span> if (!this.isServerOnline(sn)) {<a name="line.660"></a> -<span class="sourceLineNo">661</span> LOG.warn("Server " + sn + " is not currently online. " +<a name="line.661"></a> -<span class="sourceLineNo">662</span> "Ignoring request to add it to draining list.");<a name="line.662"></a> -<span class="sourceLineNo">663</span> return false;<a name="line.663"></a> -<span class="sourceLineNo">664</span> }<a name="line.664"></a> -<span class="sourceLineNo">665</span> // Add the server to the draining servers lists, if it's not already in<a name="line.665"></a> -<span class="sourceLineNo">666</span> // it.<a name="line.666"></a> -<span class="sourceLineNo">667</span> if (this.drainingServers.contains(sn)) {<a name="line.667"></a> -<span class="sourceLineNo">668</span> LOG.warn("Server " + sn + " is already in the draining server list." +<a name="line.668"></a> -<span class="sourceLineNo">669</span> "Ignoring request to add it again.");<a name="line.669"></a> -<span class="sourceLineNo">670</span> return true;<a name="line.670"></a> -<span class="sourceLineNo">671</span> }<a name="line.671"></a> -<span class="sourceLineNo">672</span> LOG.info("Server " + sn + " added to draining server list.");<a name="line.672"></a> -<span class="sourceLineNo">673</span> return this.drainingServers.add(sn);<a name="line.673"></a> -<span class="sourceLineNo">674</span> }<a name="line.674"></a> -<span class="sourceLineNo">675</span><a name="line.675"></a> -<span class="sourceLineNo">676</span> // RPC methods to region servers<a name="line.676"></a> -<span class="sourceLineNo">677</span><a name="line.677"></a> -<span class="sourceLineNo">678</span> private HBaseRpcController newRpcController() {<a name="line.678"></a> -<span class="sourceLineNo">679</span> return rpcControllerFactory == null ? null : rpcControllerFactory.newController();<a name="line.679"></a> -<span class="sourceLineNo">680</span> }<a name="line.680"></a> -<span class="sourceLineNo">681</span><a name="line.681"></a> -<span class="sourceLineNo">682</span> /**<a name="line.682"></a> -<span class="sourceLineNo">683</span> * Sends a WARMUP RPC to the specified server to warmup the specified region.<a name="line.683"></a> -<span class="sourceLineNo">684</span> * <p><a name="line.684"></a> -<span class="sourceLineNo">685</span> * A region server could reject the close request because it either does not<a name="line.685"></a> -<span class="sourceLineNo">686</span> * have the specified region or the region is being split.<a name="line.686"></a> -<span class="sourceLineNo">687</span> * @param server server to warmup a region<a name="line.687"></a> -<span class="sourceLineNo">688</span> * @param region region to warmup<a name="line.688"></a> -<span class="sourceLineNo">689</span> */<a name="line.689"></a> -<span class="sourceLineNo">690</span> public void sendRegionWarmup(ServerName server,<a name="line.690"></a> -<span class="sourceLineNo">691</span> RegionInfo region) {<a name="line.691"></a> -<span class="sourceLineNo">692</span> if (server == null) return;<a name="line.692"></a> -<span class="sourceLineNo">693</span> try {<a name="line.693"></a> -<span class="sourceLineNo">694</span> AdminService.BlockingInterface admin = getRsAdmin(server);<a name="line.694"></a> -<span class="sourceLineNo">695</span> HBaseRpcController controller = newRpcController();<a name="line.695"></a> -<span class="sourceLineNo">696</span> ProtobufUtil.warmupRegion(controller, admin, region);<a name="line.696"></a> -<span class="sourceLineNo">697</span> } catch (IOException e) {<a name="line.697"></a> -<span class="sourceLineNo">698</span> LOG.error("Received exception in RPC for warmup server:" +<a name="line.698"></a> -<span class="sourceLineNo">699</span> server + "region: " + region +<a name="line.699"></a> -<span class="sourceLineNo">700</span> "exception: " + e);<a name="line.700"></a> -<span class="sourceLineNo">701</span> }<a name="line.701"></a> -<span class="sourceLineNo">702</span> }<a name="line.702"></a> -<span class="sourceLineNo">703</span><a name="line.703"></a> -<span class="sourceLineNo">704</span> /**<a name="line.704"></a> -<span class="sourceLineNo">705</span> * Contacts a region server and waits up to timeout ms<a name="line.705"></a> -<span class="sourceLineNo">706</span> * to close the region. 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class="sourceLineNo">715</span> LOG.warn("Exception when closing region: " + region.getRegionNameAsString(), e);<a name="line.715"></a> -<span class="sourceLineNo">716</span> }<a name="line.716"></a> -<span class="sourceLineNo">717</span> long expiration = timeout + System.currentTimeMillis();<a name="line.717"></a> -<span class="sourceLineNo">718</span> while (System.currentTimeMillis() < expiration) {<a name="line.718"></a> -<span class="sourceLineNo">719</span> controller.reset();<a name="line.719"></a> -<span class="sourceLineNo">720</span> try {<a name="line.720"></a> -<span class="sourceLineNo">721</span> RegionInfo rsRegion =<a name="line.721"></a> -<span class="sourceLineNo">722</span> ProtobufUtil.getRegionInfo(controller, rs, region.getRegionName());<a name="line.722"></a> -<span class="sourceLineNo">723</span> if (rsRegion == null) return;<a name="line.723"></a> -<span class="sourceLineNo">724</span> } catch (IOException ioe) {<a name="line.724"></a> -<span class="sourceLineNo">725</span> if (ioe instanceof NotServingRegionException) // no need to retry again<a name="line.725"></a> -<span class="sourceLineNo">726</span> return;<a name="line.726"></a> -<span class="sourceLineNo">727</span> LOG.warn("Exception when retrieving regioninfo from: "<a name="line.727"></a> -<span class="sourceLineNo">728</span> + region.getRegionNameAsString(), ioe);<a name="line.728"></a> -<span class="sourceLineNo">729</span> }<a name="line.729"></a> -<span class="sourceLineNo">730</span> Thread.sleep(1000);<a name="line.730"></a> -<span class="sourceLineNo">731</span> }<a name="line.731"></a> -<span class="sourceLineNo">732</span> throw new IOException("Region " + region + " failed to close within"<a name="line.732"></a> -<span class="sourceLineNo">733</span> + " timeout " + timeout);<a name="line.733"></a> -<span class="sourceLineNo">734</span> }<a name="line.734"></a> -<span class="sourceLineNo">735</span><a name="line.735"></a> -<span class="sourceLineNo">736</span> /**<a name="line.736"></a> -<span class="sourceLineNo">737</span> * @param sn<a name="line.737"></a> -<span class="sourceLineNo">738</span> * @return Admin interface for the remote regionserver named <code>sn</code><a name="line.738"></a> -<span class="sourceLineNo">739</span> * @throws IOException<a name="line.739"></a> -<span class="sourceLineNo">740</span> * @throws RetriesExhaustedException wrapping a ConnectException if failed<a name="line.740"></a> -<span class="sourceLineNo">741</span> */<a name="line.741"></a> -<span class="sourceLineNo">742</span> public AdminService.BlockingInterface getRsAdmin(final ServerName sn)<a name="line.742"></a> -<span class="sourceLineNo">743</span> throws IOException {<a name="line.743"></a> -<span class="sourceLineNo">744</span> AdminService.BlockingInterface admin = this.rsAdmins.get(sn);<a name="line.744"></a> -<span class="sourceLineNo">745</span> if (admin == null) {<a name="line.745"></a> -<span class="sourceLineNo">746</span> LOG.debug("New admin connection to " + sn.toString());<a name="line.746"></a> -<span class="sourceLineNo">747</span> if (sn.equals(master.getServerName()) && master instanceof HRegionServer) {<a name="line.747"></a> -<span class="sourceLineNo">748</span> // A master is also a region server now, see HBASE-10569 for details<a name="line.748"></a> -<span class="sourceLineNo">749</span> admin = ((HRegionServer)master).getRSRpcServices();<a name="line.749"></a> -<span class="sourceLineNo">750</span> } else {<a name="line.750"></a> -<span class="sourceLineNo">751</span> admin = this.connection.getAdmin(sn);<a name="line.751"></a> -<span class="sourceLineNo">752</span> }<a name="line.752"></a> -<span class="sourceLineNo">753</span> this.rsAdmins.put(sn, admin);<a name="line.753"></a> -<span class="sourceLineNo">754</span> }<a name="line.754"></a> -<span class="sourceLineNo">755</span> return admin;<a name="line.755"></a> -<span class="sourceLineNo">756</span> }<a name="line.756"></a> -<span class="sourceLineNo">757</span><a name="line.757"></a> -<span class="sourceLineNo">758</span> /**<a name="line.758"></a> -<span class="sourceLineNo">759</span> * Calculate min necessary to start. This is not an absolute. It is just<a name="line.759"></a> -<span class="sourceLineNo">760</span> * a friction that will cause us hang around a bit longer waiting on<a name="line.760"></a> -<span class="sourceLineNo">761</span> * RegionServers to check-in.<a name="line.761"></a> -<span class="sourceLineNo">762</span> */<a name="line.762"></a> -<span class="sourceLineNo">763</span> private int getMinToStart() {<a name="line.763"></a> -<span class="sourceLineNo">764</span> if (master.isInMaintenanceMode()) {<a name="line.764"></a> -<span class="sourceLineNo">765</span> // If in maintenance mode, then master hosting meta will be the only server available<a name="line.765"></a> -<span class="sourceLineNo">766</span> return 1;<a name="line.766"></a> -<span class="sourceLineNo">767</span> }<a name="line.767"></a> -<span class="sourceLineNo">768</span><a name="line.768"></a> -<span class="sourceLineNo">769</span> int minimumRequired = 1;<a name="line.769"></a> -<span class="sourceLineNo">770</span> if (LoadBalancer.isTablesOnMaster(master.getConfiguration()) &&<a name="line.770"></a> -<span class="sourceLineNo">771</span> LoadBalancer.isSystemTablesOnlyOnMaster(master.getConfiguration())) {<a name="line.771"></a> -<span class="sourceLineNo">772</span> // If Master is carrying regions it will show up as a 'server', but is not handling user-<a name="line.772"></a> -<span class="sourceLineNo">773</span> // space regions, so we need a second server.<a name="line.773"></a> -<span class="sourceLineNo">774</span> minimumRequired = 2;<a name="line.774"></a> -<span class="sourceLineNo">775</span> }<a name="line.775"></a> -<span class="sourceLineNo">776</span><a name="line.776"></a> -<span class="sourceLineNo">777</span> int minToStart = this.master.getConfiguration().getInt(WAIT_ON_REGIONSERVERS_MINTOSTART, -1);<a name="line.777"></a> -<span class="sourceLineNo">778</span> // Ensure we are never less than minimumRequired else stuff won't work.<a name="line.778"></a> -<span class="sourceLineNo">779</span> return Math.max(minToStart, minimumRequired);<a name="line.779"></a> -<span class="sourceLineNo">780</span> }<a name="line.780"></a> -<span class="sourceLineNo">781</span><a name="line.781"></a> -<span class="sourceLineNo">782</span> /**<a name="line.782"></a> -<span class="sourceLineNo">783</span> * Wait for the region servers to report in.<a name="line.783"></a> -<span class="sourceLineNo">784</span> * We will wait until one of this condition is met:<a name="line.784"></a> -<span class="sourceLineNo">785</span> * - the master is stopped<a name="line.785"></a> -<span class="sourceLineNo">786</span> * - the 'hbase.master.wait.on.regionservers.maxtostart' number of<a name="line.786"></a> -<span class="sourceLineNo">787</span> * region servers is reached<a name="line.787"></a> -<span class="sourceLineNo">788</span> * - the 'hbase.master.wait.on.regionservers.mintostart' is reached AND<a name="line.788"></a> -<span class="sourceLineNo">789</span> * there have been no new region server in for<a name="line.789"></a> -<span class="sourceLineNo">790</span> * 'hbase.master.wait.on.regionservers.interval' time AND<a name="line.790"></a> -<span class="sourceLineNo">791</span> * the 'hbase.master.wait.on.regionservers.timeout' is reached<a name="line.791"></a> -<span class="sourceLineNo">792</span> *<a name="line.792"></a> -<span class="sourceLineNo">793</span> * @throws InterruptedException<a name="line.793"></a> -<span class="sourceLineNo">794</span> */<a name="line.794"></a> -<span class="sourceLineNo">795</span> public void waitForRegionServers(MonitoredTask status) throws InterruptedException {<a name="line.795"></a> -<span class="sourceLineNo">796</span> final long interval = this.master.getConfiguration().<a name="line.796"></a> -<span class="sourceLineNo">797</span> getLong(WAIT_ON_REGIONSERVERS_INTERVAL, 1500);<a name="line.797"></a> -<span class="sourceLineNo">798</span> final long timeout = this.master.getConfiguration().<a name="line.798"></a> -<span class="sourceLineNo">799</span> getLong(WAIT_ON_REGIONSERVERS_TIMEOUT, 4500);<a name="line.799"></a> -<span class="sourceLineNo">800</span> // Min is not an absolute; just a friction making us wait longer on server checkin.<a name="line.800"></a> -<span class="sourceLineNo">801</span> int minToStart = getMinToStart();<a name="line.801"></a> -<span class="sourceLineNo">802</span> int maxToStart = this.master.getConfiguration().<a name="line.802"></a> -<span class="sourceLineNo">803</span> getInt(WAIT_ON_REGIONSERVERS_MAXTOSTART, Integer.MAX_VALUE);<a name="line.803"></a> -<span class="sourceLineNo">804</span> if (maxToStart < minToStart) {<a name="line.804"></a> -<span class="sourceLineNo">805</span> LOG.warn(String.format("The value of '%s' (%d) is set less than '%s' (%d), ignoring.",<a name="line.805"></a> -<span class="sourceLineNo">806</span> WAIT_ON_REGIONSERVERS_MAXTOSTART, maxToStart,<a name="line.806"></a> -<span class="sourceLineNo">807</span> WAIT_ON_REGIONSERVERS_MINTOSTART, minToStart));<a name="line.807"></a> -<span class="sourceLineNo">808</span> maxToStart = Integer.MAX_VALUE;<a name="line.808"></a> -<span class="sourceLineNo">809</span> }<a name="line.809"></a> -<span class="sourceLineNo">810</span><a name="line.810"></a> -<span class="sourceLineNo">811</span> long now = System.currentTimeMillis();<a name="line.811"></a> -<span class="sourceLineNo">812</span> final long startTime = now;<a name="line.812"></a> -<span class="sourceLineNo">813</span> long slept = 0;<a name="line.813"></a> -<span class="sourceLineNo">814</span> long lastLogTime = 0;<a name="line.814"></a> -<span class="sourceLineNo">815</span> long lastCountChange = startTime;<a name="line.815"></a> -<span class="sourceLineNo">816</span> int count = countOfRegionServers();<a name="line.816"></a> -<span class="sourceLineNo">817</span> int oldCount = 0;<a name="line.817"></a> -<span class="sourceLineNo">818</span> // This while test is a little hard to read. 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"stopped.": "running"));<a name="line.859"></a> -<span class="sourceLineNo">860</span> }<a name="line.860"></a> -<span class="sourceLineNo">861</span><a name="line.861"></a> -<span class="sourceLineNo">862</span> private String getStrForMax(final int max) {<a name="line.862"></a> -<span class="sourceLineNo">863</span> return max == Integer.MAX_VALUE? 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" +<a name="line.647"></a> +<span class="sourceLineNo">648</span> "Removing from draining list anyway, as requested.");<a name="line.648"></a> +<span class="sourceLineNo">649</span> }<a name="line.649"></a> +<span class="sourceLineNo">650</span> // Remove the server from the draining servers lists.<a name="line.650"></a> +<span class="sourceLineNo">651</span> return this.drainingServers.remove(sn);<a name="line.651"></a> +<span class="sourceLineNo">652</span> }<a name="line.652"></a> +<span class="sourceLineNo">653</span><a name="line.653"></a> +<span class="sourceLineNo">654</span> /**<a name="line.654"></a> +<span class="sourceLineNo">655</span> * Add the server to the drain list.<a name="line.655"></a> +<span class="sourceLineNo">656</span> * @param sn<a name="line.656"></a> +<span class="sourceLineNo">657</span> * @return True if the server is added or the server is already on the drain list.<a name="line.657"></a> +<span class="sourceLineNo">658</span> */<a name="line.658"></a> +<span class="sourceLineNo">659</span> public synchronized boolean addServerToDrainList(final ServerName sn) {<a name="line.659"></a> +<span class="sourceLineNo">660</span> // Warn if the server (sn) is not online. ServerName is of the form:<a name="line.660"></a> +<span class="sourceLineNo">661</span> // <hostname> , <port> , <startcode><a name="line.661"></a> +<span class="sourceLineNo">662</span><a name="line.662"></a> +<span class="sourceLineNo">663</span> if (!this.isServerOnline(sn)) {<a name="line.663"></a> +<span class="sourceLineNo">664</span> LOG.warn("Server " + sn + " is not currently online. " +<a name="line.664"></a> +<span class="sourceLineNo">665</span> "Ignoring request to add it to draining list.");<a name="line.665"></a> +<span class="sourceLineNo">666</span> return false;<a name="line.666"></a> +<span class="sourceLineNo">667</span> }<a name="line.667"></a> +<span class="sourceLineNo">668</span> // Add the server to the draining servers lists, if it's not already in<a name="line.668"></a> +<span class="sourceLineNo">669</span> // it.<a name="line.669"></a> +<span class="sourceLineNo">670</span> if (this.drainingServers.contains(sn)) {<a name="line.670"></a> +<span class="sourceLineNo">671</span> LOG.warn("Server " + sn + " is already in the draining server list." +<a name="line.671"></a> +<span class="sourceLineNo">672</span> "Ignoring request to add it again.");<a name="line.672"></a> +<span class="sourceLineNo">673</span> return true;<a name="line.673"></a> +<span class="sourceLineNo">674</span> }<a name="line.674"></a> +<span class="sourceLineNo">675</span> LOG.info("Server " + sn + " added to draining server list.");<a name="line.675"></a> +<span class="sourceLineNo">676</span> return this.drainingServers.add(sn);<a name="line.676"></a> +<span class="sourceLineNo">677</span> }<a name="line.677"></a> +<span class="sourceLineNo">678</span><a name="line.678"></a> +<span class="sourceLineNo">679</span> // RPC methods to region servers<a name="line.679"></a> +<span class="sourceLineNo">680</span><a name="line.680"></a> +<span class="sourceLineNo">681</span> private HBaseRpcController newRpcController() {<a name="line.681"></a> +<span class="sourceLineNo">682</span> return rpcControllerFactory == null ? null : rpcControllerFactory.newController();<a name="line.682"></a> +<span class="sourceLineNo">683</span> }<a name="line.683"></a> +<span class="sourceLineNo">684</span><a name="line.684"></a> +<span class="sourceLineNo">685</span> /**<a name="line.685"></a> +<span class="sourceLineNo">686</span> * Sends a WARMUP RPC to the specified server to warmup the specified region.<a name="line.686"></a> +<span class="sourceLineNo">687</span> * <p><a name="line.687"></a> +<span class="sourceLineNo">688</span> * A region server could reject the close request because it either does not<a name="line.688"></a> +<span class="sourceLineNo">689</span> * have the specified region or the region is being split.<a name="line.689"></a> +<span class="sourceLineNo">690</span> * @param server server to warmup a region<a name="line.690"></a> +<span class="sourceLineNo">691</span> * @param region region to warmup<a name="line.691"></a> +<span class="sourceLineNo">692</span> */<a name="line.692"></a> +<span class="sourceLineNo">693</span> public void sendRegionWarmup(ServerName server,<a name="line.693"></a> +<span class="sourceLineNo">694</span> RegionInfo region) {<a name="line.694"></a> +<span class="sourceLineNo">695</span> if (server == null) return;<a name="line.695"></a> +<span class="sourceLineNo">696</span> try {<a name="line.696"></a> +<span class="sourceLineNo">697</span> AdminService.BlockingInterface admin = getRsAdmin(server);<a name="line.697"></a> +<span class="sourceLineNo">698</span> HBaseRpcController controller = newRpcController();<a name="line.698"></a> +<span class="sourceLineNo">699</span> ProtobufUtil.warmupRegion(controller, admin, region);<a name="line.699"></a> +<span class="sourceLineNo">700</span> } catch (IOException e) {<a name="line.700"></a> +<span class="sourceLineNo">701</span> LOG.error("Received exception in RPC for warmup server:" +<a name="line.701"></a> +<span class="sourceLineNo">702</span> server + "region: " + region +<a name="line.702"></a> +<span class="sourceLineNo">703</span> "exception: " + e);<a name="line.703"></a> +<span class="sourceLineNo">704</span> }<a name="line.704"></a> +<span class="sourceLineNo">705</span> }<a name="line.705"></a> +<span class="sourceLineNo">706</span><a name="line.706"></a> +<span class="sourceLineNo">707</span> /**<a name="line.707"></a> +<span class="sourceLineNo">708</span> * Contacts a region server and waits up to timeout ms<a name="line.708"></a> +<span class="sourceLineNo">709</span> * to close the region. This bypasses the active hmaster.<a name="line.709"></a> +<span class="sourceLineNo">710</span> */<a name="line.710"></a> +<span class="sourceLineNo">711</span> public static void closeRegionSilentlyAndWait(ClusterConnection connection,<a name="line.711"></a> +<span class="sourceLineNo">712</span> ServerName server, RegionInfo region, long timeout) throws IOException, InterruptedException {<a name="line.712"></a> +<span class="sourceLineNo">713</span> AdminService.BlockingInterface rs = connection.getAdmin(server);<a name="line.713"></a> +<span class="sourceLineNo">714</span> HBaseRpcController controller = connection.getRpcControllerFactory().newController();<a name="line.714"></a> +<span class="sourceLineNo">715</span> try {<a name="line.715"></a> +<span class="sourceLineNo">716</span> ProtobufUtil.closeRegion(controller, rs, server, region.getRegionName());<a name="line.716"></a> +<span class="sourceLineNo">717</span> } catch (IOException e) {<a name="line.717"></a> +<span class="sourceLineNo">718</span> LOG.warn("Exception when closing region: " + region.getRegionNameAsString(), e);<a name="line.718"></a> +<span class="sourceLineNo">719</span> }<a name="line.719"></a> +<span class="sourceLineNo">720</span> long expiration = timeout + System.currentTimeMillis();<a name="line.720"></a> +<span class="sourceLineNo">721</span> while (System.currentTimeMillis() < expiration) {<a name="line.721"></a> +<span class="sourceLineNo">722</span> controller.reset();<a name="line.722"></a> +<span class="sourceLineNo">723</span> try {<a name="line.723"></a> +<span class="sourceLineNo">724</span> RegionInfo rsRegion =<a name="line.724"></a> +<span class="sourceLineNo">725</span> ProtobufUtil.getRegionInfo(controller, rs, region.getRegionName());<a name="line.725"></a> +<span class="sourceLineNo">726</span> if (rsRegion == null) return;<a name="line.726"></a> +<span class="sourceLineNo">727</span> } catch (IOException ioe) {<a name="line.727"></a> +<span class="sourceLineNo">728</span> if (ioe instanceof NotServingRegionException) // no need to retry again<a name="line.728"></a> +<span class="sourceLineNo">729</span> return;<a name="line.729"></a> +<span class="sourceLineNo">730</span> LOG.warn("Exception when retrieving regioninfo from: "<a name="line.730"></a> +<span class="sourceLineNo">731</span> + region.getRegionNameAsString(), ioe);<a name="line.731"></a> +<span class="sourceLineNo">732</span> }<a name="line.732"></a> +<span class="sourceLineNo">733</span> Thread.sleep(1000);<a name="line.733"></a> +<span class="sourceLineNo">734</span> }<a name="line.734"></a> +<span class="sourceLineNo">735</span> throw new IOException("Region " + region + " failed to close within"<a name="line.735"></a> +<span class="sourceLineNo">736</span> + " timeout " + timeout);<a name="line.736"></a> +<span class="sourceLineNo">737</span> }<a name="line.737"></a> +<span class="sourceLineNo">738</span><a name="line.738"></a> +<span class="sourceLineNo">739</span> /**<a name="line.739"></a> +<span class="sourceLineNo">740</span> * @param sn<a name="line.740"></a> +<span class="sourceLineNo">741</span> * @return Admin interface for the remote regionserver named <code>sn</code><a name="line.741"></a> +<span class="sourceLineNo">742</span> * @throws IOException<a name="line.742"></a> +<span class="sourceLineNo">743</span> * @throws RetriesExhaustedException wrapping a ConnectException if failed<a name="line.743"></a> +<span class="sourceLineNo">744</span> */<a name="line.744"></a> +<span class="sourceLineNo">745</span> public AdminService.BlockingInterface getRsAdmin(final ServerName sn)<a name="line.745"></a> +<span class="sourceLineNo">746</span> throws IOException {<a name="line.746"></a> +<span class="sourceLineNo">747</span> AdminService.BlockingInterface admin = this.rsAdmins.get(sn);<a name="line.747"></a> +<span class="sourceLineNo">748</span> if (admin == null) {<a name="line.748"></a> +<span class="sourceLineNo">749</span> LOG.debug("New admin connection to " + sn.toString());<a name="line.749"></a> +<span class="sourceLineNo">750</span> if (sn.equals(master.getServerName()) && master instanceof HRegionServer) {<a name="line.750"></a> +<span class="sourceLineNo">751</span> // A master is also a region server now, see HBASE-10569 for details<a name="line.751"></a> +<span class="sourceLineNo">752</span> admin = ((HRegionServer)master).getRSRpcServices();<a name="line.752"></a> +<span class="sourceLineNo">753</span> } else {<a name="line.753"></a> +<span class="sourceLineNo">754</span> admin = this.connection.getAdmin(sn);<a name="line.754"></a> +<span class="sourceLineNo">755</span> }<a name="line.755"></a> +<span class="sourceLineNo">756</span> this.rsAdmins.put(sn, admin);<a name="line.756"></a> +<span class="sourceLineNo">757</span> }<a name="line.757"></a> +<span class="sourceLineNo">758</span> return admin;<a name="line.758"></a> +<span class="sourceLineNo">759</span> }<a name="line.759"></a> +<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> +<span class="sourceLineNo">764</span> * RegionServers to check-in.<a name="line.764"></a> +<span class="sourceLineNo">765</span> */<a name="line.765"></a> +<span class="sourceLineNo">766</span> private int getMinToStart() {<a name="line.766"></a> +<span class="sourceLineNo">767</span> if (master.isInMaintenanceMode()) {<a name="line.767"></a> +<span class="sourceLineNo">768</span> // If in maintenance mode, then master hosting meta will be the only server available<a name="line.768"></a> +<span class="sourceLineNo">769</span> return 1;<a name="line.769"></a> +<span class="sourceLineNo">770</span> }<a name="line.770"></a> +<span class="sourceLineNo">771</span><a name="line.771"></a> +<span class="sourceLineNo">772</span> int minimumRequired = 1;<a name="line.772"></a> +<span class="sourceLineNo">773</span> if (LoadBalancer.isTablesOnMaster(master.getConfiguration()) &&<a name="line.773"></a> +<span class="sourceLineNo">774</span> LoadBalancer.isSystemTablesOnlyOnMaster(master.getConfiguration())) {<a name="line.774"></a> +<span class="sourceLineNo">775</span> // If Master is carrying regions it will show up as a 'server', but is not handling user-<a name="line.775"></a> +<span class="sourceLineNo">776</span> // space regions, so we need a second server.<a name="line.776"></a> +<span class="sourceLineNo">777</span> minimumRequired = 2;<a name="line.777"></a> +<span class="sourceLineNo">778</span> }<a name="line.778"></a> +<span class="sourceLineNo">779</span><a name="line.779"></a> +<span class="sourceLineNo">780</span> int minToStart = this.master.getConfiguration().getInt(WAIT_ON_REGIONSERVERS_MINTOSTART, -1);<a name="line.780"></a> +<span class="sourceLineNo">781</span> // Ensure we are never less than minimumRequired else stuff won't work.<a name="line.781"></a> +<span class="sourceLineNo">782</span> return Math.max(minToStart, minimumRequired);<a name="line.782"></a> +<span class="sourceLineNo">783</span> }<a name="line.783"></a> +<span class="sourceLineNo">784</span><a name="line.784"></a> +<span class="sourceLineNo">785</span> /**<a name="line.785"></a> +<span class="sourceLineNo">786</span> * Wait for the region servers to report in.<a name="line.786"></a> +<span class="sourceLineNo">787</span> * We will wait until one of this condition is met:<a name="line.787"></a> +<span class="sourceLineNo">788</span> * - the master is stopped<a name="line.788"></a> +<span class="sourceLineNo">789</span> * - the 'hbase.master.wait.on.regionservers.maxtostart' number of<a name="line.789"></a> +<span class="sourceLineNo">790</span> * region servers is reached<a name="line.790"></a> +<span class="sourceLineNo">791</span> * - the 'hbase.master.wait.on.regionservers.mintostart' is reached AND<a name="line.791"></a> +<span class="sourceLineNo">792</span> * there have been no new region server in for<a name="line.792"></a> +<span class="sourceLineNo">793</span> * 'hbase.master.wait.on.regionservers.interval' time AND<a name="line.793"></a> +<span class="sourceLineNo">794</span> * the 'hbase.master.wait.on.regionservers.timeout' is reached<a name="line.794"></a> +<span class="sourceLineNo">795</span> *<a name="line.795"></a> +<span class="sourceLineNo">796</span> * @throws InterruptedException<a name="line.796"></a> +<span class="sourceLineNo">797</span> */<a name="line.797"></a> +<span class="sourceLineNo">798</span> public void waitForRegionServers(MonitoredTask status) throws InterruptedException {<a name="line.798"></a> +<span class="sourceLineNo">799</span> final long interval = this.master.getConfiguration().<a name="line.799"></a> +<span class="sourceLineNo">800</span> getLong(WAIT_ON_REGIONSERVERS_INTERVAL, 1500);<a name="line.800"></a> +<span class="sourceLineNo">801</span> final long timeout = this.master.getConfiguration().<a name="line.801"></a> +<span class="sourceLineNo">802</span> getLong(WAIT_ON_REGIONSERVERS_TIMEOUT, 4500);<a name="line.802"></a> +<span class="sourceLineNo">803</span> // Min is not an absolute; just a friction making us wait longer on server checkin.<a name="line.803"></a> +<span class="sourceLineNo">804</span> int minToStart = getMinToStart();<a name="line.804"></a> +<span class="sourceLineNo">805</span> int maxToStart = this.master.getConfiguration().<a name="line.805"></a> +<span class="sourceLineNo">806</span> getInt(WAIT_ON_REGIONSERVERS_MAXTOSTART, Integer.MAX_VALUE);<a name="line.806"></a> +<span class="sourceLineNo">807</span> if (maxToStart < minToStart) {<a name="line.807"></a> +<span class="sourceLineNo">808</span> LOG.warn(String.format("The value of '%s' (%d) is set less than '%s' (%d), ignoring.",<a name="line.808"></a> +<span class="sourceLineNo">809</span> 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> +<span class="sourceLineNo">811</span> maxToStart = Integer.MAX_VALUE;<a name="line.811"></a> +<span class="sourceLineNo">812</span> }<a name="line.812"></a> +<span class="sourceLineNo">813</span><a name="line.813"></a> +<span class="sourceLineNo">814</span> long now = System.currentTimeMillis();<a name="line.814"></a> +<span class="sourceLineNo">815</span> final long startTime = now;<a name="line.815"></a> +<span class="sourceLineNo">816</span> long slept = 0;<a name="line.816"></a> +<span class="sourceLineNo">817</span> long lastLogTime = 0;<a name="line.817"></a> +<span class="sourceLineNo">818</span> long lastCountChange = startTime;<a name="line.818"></a> +<span class="sourceLineNo">819</span> int count = countOfRegionServers();<a name="line.819"></a> +<span class="sourceLineNo">820</span> int oldCount = 0;<a name="line.820"></a> +<span class="sourceLineNo">821</span> // This while test is a little hard to read. We try to comment it in below but in essence:<a name="line.821"></a> +<span class="sourceLineNo">822</span> // Wait if Master is not stopped and the number of regionservers that have checked-in is<a name="line.822"></a> +<span class="sourceLineNo">823</span> // less than the maxToStart. Both of these conditions will be true near universally.<a name="line.823"></a> +<span class="sourceLineNo">824</span> // Next, we will keep cycling if ANY of the following three conditions are true:<a name="line.824"></a> +<span class="sourceLineNo">825</span> // 1. The time since a regionserver registered is < interval (means servers are actively checking in).<a name="line.825"></a> +<span class="sourceLineNo">826</span> // 2. We are under the total timeout.<a name="line.826"></a> +<span class="sourceLineNo">827</span> // 3. The count of servers is < minimum.<a name="line.827"></a> +<span class="sourceLineNo">828</span> for (ServerListener listener: this.listeners) {<a name="line.828"></a> +<span class="sourceLineNo">829</span> listener.waiting();<a name="line.829"></a> +<span class="sourceLineNo">830</span> }<a name="line.830"></a> +<span class="sourceLineNo">831</span> while (!this.master.isStopped() && !isClusterShutdown() && count < maxToStart &&<a name="line.831"></a> +<span class="sourceLineNo">832</span> ((lastCountChange + interval) > now || timeout > slept || count < minToStart)) {<a name="line.832"></a> +<span class="sourceLineNo">833</span> // Log some info at every interval time or if there is a change<a name="line.833"></a> +<span class="sourceLineNo">834</span> if (oldCount != count || lastLogTime + interval < now) {<a name="line.834"></a> +<span class="sourceLineNo">835</span> lastLogTime = now;<a name="line.835"></a> +<span class="sourceLineNo">836</span> String msg =<a name="line.836"></a> +<span class="sourceLineNo">837</span> "Waiting on regionserver 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> +<span class="sourceLineNo">840</span> LOG.info(msg);<a 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 name="line.845"></a> +<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 name="line.851"></a> +<span class="sourceLineNo">852</span> if (count != oldCount) {<a name="line.852"></a> +<span class="sourceLineNo">853</span> lastCountChange = now;<a 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> +<span class="sourceLineNo">857</span> if (isClusterShutdown()) {<a name="line.857"></a> +<span class="sourceLineNo">858</span> this.master.stop("Cluster shutdown");<a name="line.858"></a> +<span class="sourceLineNo">859</span> }<a name="line.859"></a> +<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> +<span class="sourceLineNo">864</span><a name="line.864"></a> +<span class="sourceLineNo">865</span> private String getStrForMax(final int max) {<a name="line.865"></a> +<span class="sourceLineNo">866</span> return max == Integer.MAX_VALUE? "NO_LIMIT": Integer.toString(max);<a name="line.866"></a> +<span class="sourceLineNo">867</span> }<a name="line.867"></a> +<span class="sourceLineNo">868</span><a name="line.868"></a> +<span class="sourceLineNo">869</span> /**<a name="line.869"></a> +<span class="sourceLineNo">870</span> * @return A copy of the internal list 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<ServerName> 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. 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