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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/12/20 10:50:42 UTC
[2/9] hbase-site git commit: Published site at
8991877bb250ee1fe66c2b9a491645973927d674.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/1825b69e/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.html
index fd8ff3b..f14e153 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.html
@@ -908,3038 +908,3039 @@
<span class="sourceLineNo">900</span> */<a name="line.900"></a>
<span class="sourceLineNo">901</span> private void finishActiveMasterInitialization(MonitoredTask status) throws IOException,<a name="line.901"></a>
<span class="sourceLineNo">902</span> InterruptedException, KeeperException, ReplicationException {<a name="line.902"></a>
-<span class="sourceLineNo">903</span> Thread zombieDetector = new Thread(new InitializationMonitor(this),<a name="line.903"></a>
-<span class="sourceLineNo">904</span> "ActiveMasterInitializationMonitor-" + System.currentTimeMillis());<a name="line.904"></a>
-<span class="sourceLineNo">905</span> zombieDetector.setDaemon(true);<a name="line.905"></a>
-<span class="sourceLineNo">906</span> zombieDetector.start();<a name="line.906"></a>
+<span class="sourceLineNo">903</span> /*<a name="line.903"></a>
+<span class="sourceLineNo">904</span> * We are active master now... go initialize components we need to run.<a name="line.904"></a>
+<span class="sourceLineNo">905</span> */<a name="line.905"></a>
+<span class="sourceLineNo">906</span> status.setStatus("Initializing Master file system");<a name="line.906"></a>
<span class="sourceLineNo">907</span><a name="line.907"></a>
-<span class="sourceLineNo">908</span> /*<a name="line.908"></a>
-<span class="sourceLineNo">909</span> * We are active master now... go initialize components we need to run.<a name="line.909"></a>
-<span class="sourceLineNo">910</span> */<a name="line.910"></a>
-<span class="sourceLineNo">911</span> status.setStatus("Initializing Master file system");<a name="line.911"></a>
-<span class="sourceLineNo">912</span><a name="line.912"></a>
-<span class="sourceLineNo">913</span> this.masterActiveTime = System.currentTimeMillis();<a name="line.913"></a>
-<span class="sourceLineNo">914</span> // TODO: Do this using Dependency Injection, using PicoContainer, Guice or Spring.<a name="line.914"></a>
-<span class="sourceLineNo">915</span><a name="line.915"></a>
-<span class="sourceLineNo">916</span> // Only initialize the MemStoreLAB when master carry table<a name="line.916"></a>
-<span class="sourceLineNo">917</span> if (LoadBalancer.isTablesOnMaster(conf)) {<a name="line.917"></a>
-<span class="sourceLineNo">918</span> initializeMemStoreChunkCreator();<a name="line.918"></a>
-<span class="sourceLineNo">919</span> }<a name="line.919"></a>
-<span class="sourceLineNo">920</span> this.fileSystemManager = new MasterFileSystem(conf);<a name="line.920"></a>
-<span class="sourceLineNo">921</span> this.walManager = new MasterWalManager(this);<a name="line.921"></a>
-<span class="sourceLineNo">922</span><a name="line.922"></a>
-<span class="sourceLineNo">923</span> // enable table descriptors cache<a name="line.923"></a>
-<span class="sourceLineNo">924</span> this.tableDescriptors.setCacheOn();<a name="line.924"></a>
-<span class="sourceLineNo">925</span><a name="line.925"></a>
-<span class="sourceLineNo">926</span> // warm-up HTDs cache on master initialization<a name="line.926"></a>
-<span class="sourceLineNo">927</span> if (preLoadTableDescriptors) {<a name="line.927"></a>
-<span class="sourceLineNo">928</span> status.setStatus("Pre-loading table descriptors");<a name="line.928"></a>
-<span class="sourceLineNo">929</span> this.tableDescriptors.getAll();<a name="line.929"></a>
-<span class="sourceLineNo">930</span> }<a name="line.930"></a>
-<span class="sourceLineNo">931</span><a name="line.931"></a>
-<span class="sourceLineNo">932</span> // Publish cluster ID; set it in Master too. The superclass RegionServer does this later but<a name="line.932"></a>
-<span class="sourceLineNo">933</span> // only after it has checked in with the Master. At least a few tests ask Master for clusterId<a name="line.933"></a>
-<span class="sourceLineNo">934</span> // before it has called its run method and before RegionServer has done the reportForDuty.<a name="line.934"></a>
-<span class="sourceLineNo">935</span> ClusterId clusterId = fileSystemManager.getClusterId();<a name="line.935"></a>
-<span class="sourceLineNo">936</span> status.setStatus("Publishing Cluster ID " + clusterId + " in ZooKeeper");<a name="line.936"></a>
-<span class="sourceLineNo">937</span> ZKClusterId.setClusterId(this.zooKeeper, fileSystemManager.getClusterId());<a name="line.937"></a>
-<span class="sourceLineNo">938</span> this.clusterId = clusterId.toString();<a name="line.938"></a>
-<span class="sourceLineNo">939</span><a name="line.939"></a>
-<span class="sourceLineNo">940</span> // Precaution. Put in place the old hbck1 lock file to fence out old hbase1s running their<a name="line.940"></a>
-<span class="sourceLineNo">941</span> // hbck1s against an hbase2 cluster; it could do damage. To skip this behavior, set<a name="line.941"></a>
-<span class="sourceLineNo">942</span> // hbase.write.hbck1.lock.file to false.<a name="line.942"></a>
-<span class="sourceLineNo">943</span> if (this.conf.getBoolean("hbase.write.hbck1.lock.file", true)) {<a name="line.943"></a>
-<span class="sourceLineNo">944</span> HBaseFsck.checkAndMarkRunningHbck(this.conf,<a name="line.944"></a>
-<span class="sourceLineNo">945</span> HBaseFsck.createLockRetryCounterFactory(this.conf).create());<a name="line.945"></a>
-<span class="sourceLineNo">946</span> }<a name="line.946"></a>
-<span class="sourceLineNo">947</span><a name="line.947"></a>
-<span class="sourceLineNo">948</span> status.setStatus("Initialize ServerManager and schedule SCP for crash servers");<a name="line.948"></a>
-<span class="sourceLineNo">949</span> // The below two managers must be created before loading procedures, as they will be used during<a name="line.949"></a>
-<span class="sourceLineNo">950</span> // loading.<a name="line.950"></a>
-<span class="sourceLineNo">951</span> this.serverManager = createServerManager(this);<a name="line.951"></a>
-<span class="sourceLineNo">952</span> this.syncReplicationReplayWALManager = new SyncReplicationReplayWALManager(this);<a name="line.952"></a>
-<span class="sourceLineNo">953</span> createProcedureExecutor();<a name="line.953"></a>
-<span class="sourceLineNo">954</span> @SuppressWarnings("rawtypes")<a name="line.954"></a>
-<span class="sourceLineNo">955</span> Map<Class<? extends Procedure>, List<Procedure<MasterProcedureEnv>>> procsByType =<a name="line.955"></a>
-<span class="sourceLineNo">956</span> procedureExecutor.getActiveProceduresNoCopy().stream()<a name="line.956"></a>
-<span class="sourceLineNo">957</span> .collect(Collectors.groupingBy(p -> p.getClass()));<a name="line.957"></a>
-<span class="sourceLineNo">958</span><a name="line.958"></a>
-<span class="sourceLineNo">959</span> checkUnsupportedProcedure(procsByType);<a name="line.959"></a>
-<span class="sourceLineNo">960</span><a name="line.960"></a>
-<span class="sourceLineNo">961</span> // Create Assignment Manager<a name="line.961"></a>
-<span class="sourceLineNo">962</span> this.assignmentManager = createAssignmentManager(this);<a name="line.962"></a>
-<span class="sourceLineNo">963</span> this.assignmentManager.start();<a name="line.963"></a>
-<span class="sourceLineNo">964</span> // TODO: TRSP can perform as the sub procedure for other procedures, so even if it is marked as<a name="line.964"></a>
-<span class="sourceLineNo">965</span> // completed, it could still be in the procedure list. This is a bit strange but is another<a name="line.965"></a>
-<span class="sourceLineNo">966</span> // story, need to verify the implementation for ProcedureExecutor and ProcedureStore.<a name="line.966"></a>
-<span class="sourceLineNo">967</span> List<TransitRegionStateProcedure> ritList =<a name="line.967"></a>
-<span class="sourceLineNo">968</span> procsByType.getOrDefault(TransitRegionStateProcedure.class, Collections.emptyList()).stream()<a name="line.968"></a>
-<span class="sourceLineNo">969</span> .filter(p -> !p.isFinished()).map(p -> (TransitRegionStateProcedure) p)<a name="line.969"></a>
-<span class="sourceLineNo">970</span> .collect(Collectors.toList());<a name="line.970"></a>
-<span class="sourceLineNo">971</span> this.assignmentManager.setupRIT(ritList);<a name="line.971"></a>
-<span class="sourceLineNo">972</span><a name="line.972"></a>
-<span class="sourceLineNo">973</span> // Start RegionServerTracker with listing of servers found with exiting SCPs -- these should<a name="line.973"></a>
-<span class="sourceLineNo">974</span> // be registered in the deadServers set -- and with the list of servernames out on the<a name="line.974"></a>
-<span class="sourceLineNo">975</span> // filesystem that COULD BE 'alive' (we'll schedule SCPs for each and let SCP figure it out).<a name="line.975"></a>
-<span class="sourceLineNo">976</span> // We also pass dirs that are already 'splitting'... so we can do some checks down in tracker.<a name="line.976"></a>
-<span class="sourceLineNo">977</span> // TODO: Generate the splitting and live Set in one pass instead of two as we currently do.<a name="line.977"></a>
-<span class="sourceLineNo">978</span> this.regionServerTracker = new RegionServerTracker(zooKeeper, this, this.serverManager);<a name="line.978"></a>
-<span class="sourceLineNo">979</span> this.regionServerTracker.start(<a name="line.979"></a>
-<span class="sourceLineNo">980</span> procsByType.getOrDefault(ServerCrashProcedure.class, Collections.emptyList()).stream()<a name="line.980"></a>
-<span class="sourceLineNo">981</span> .map(p -> (ServerCrashProcedure) p).map(p -> p.getServerName()).collect(Collectors.toSet()),<a name="line.981"></a>
-<span class="sourceLineNo">982</span> walManager.getLiveServersFromWALDir(), walManager.getSplittingServersFromWALDir());<a name="line.982"></a>
-<span class="sourceLineNo">983</span> // This manager will be started AFTER hbase:meta is confirmed on line.<a name="line.983"></a>
-<span class="sourceLineNo">984</span> // hbase.mirror.table.state.to.zookeeper is so hbase1 clients can connect. They read table<a name="line.984"></a>
-<span class="sourceLineNo">985</span> // state from zookeeper while hbase2 reads it from hbase:meta. Disable if no hbase1 clients.<a name="line.985"></a>
-<span class="sourceLineNo">986</span> this.tableStateManager =<a name="line.986"></a>
-<span class="sourceLineNo">987</span> this.conf.getBoolean(MirroringTableStateManager.MIRROR_TABLE_STATE_TO_ZK_KEY, true)<a name="line.987"></a>
-<span class="sourceLineNo">988</span> ?<a name="line.988"></a>
-<span class="sourceLineNo">989</span> new MirroringTableStateManager(this):<a name="line.989"></a>
-<span class="sourceLineNo">990</span> new TableStateManager(this);<a name="line.990"></a>
-<span class="sourceLineNo">991</span><a name="line.991"></a>
-<span class="sourceLineNo">992</span> status.setStatus("Initializing ZK system trackers");<a name="line.992"></a>
-<span class="sourceLineNo">993</span> initializeZKBasedSystemTrackers();<a name="line.993"></a>
-<span class="sourceLineNo">994</span> status.setStatus("Loading last flushed sequence id of regions");<a name="line.994"></a>
-<span class="sourceLineNo">995</span> try {<a name="line.995"></a>
-<span class="sourceLineNo">996</span> this.serverManager.loadLastFlushedSequenceIds();<a name="line.996"></a>
-<span class="sourceLineNo">997</span> } catch (IOException e) {<a name="line.997"></a>
-<span class="sourceLineNo">998</span> LOG.debug("Failed to load last flushed sequence id of regions"<a name="line.998"></a>
-<span class="sourceLineNo">999</span> + " from file system", e);<a name="line.999"></a>
-<span class="sourceLineNo">1000</span> }<a name="line.1000"></a>
-<span class="sourceLineNo">1001</span> // Set ourselves as active Master now our claim has succeeded up in zk.<a name="line.1001"></a>
-<span class="sourceLineNo">1002</span> this.activeMaster = true;<a name="line.1002"></a>
-<span class="sourceLineNo">1003</span><a name="line.1003"></a>
-<span class="sourceLineNo">1004</span> // This is for backwards compatibility<a name="line.1004"></a>
-<span class="sourceLineNo">1005</span> // See HBASE-11393<a name="line.1005"></a>
-<span class="sourceLineNo">1006</span> status.setStatus("Update TableCFs node in ZNode");<a name="line.1006"></a>
-<span class="sourceLineNo">1007</span> ReplicationPeerConfigUpgrader tableCFsUpdater =<a name="line.1007"></a>
-<span class="sourceLineNo">1008</span> new ReplicationPeerConfigUpgrader(zooKeeper, conf);<a name="line.1008"></a>
-<span class="sourceLineNo">1009</span> tableCFsUpdater.copyTableCFs();<a name="line.1009"></a>
-<span class="sourceLineNo">1010</span><a name="line.1010"></a>
-<span class="sourceLineNo">1011</span> if (!maintenanceMode) {<a name="line.1011"></a>
-<span class="sourceLineNo">1012</span> // Add the Observer to delete quotas on table deletion before starting all CPs by<a name="line.1012"></a>
-<span class="sourceLineNo">1013</span> // default with quota support, avoiding if user specifically asks to not load this Observer.<a name="line.1013"></a>
-<span class="sourceLineNo">1014</span> if (QuotaUtil.isQuotaEnabled(conf)) {<a name="line.1014"></a>
-<span class="sourceLineNo">1015</span> updateConfigurationForQuotasObserver(conf);<a name="line.1015"></a>
-<span class="sourceLineNo">1016</span> }<a name="line.1016"></a>
-<span class="sourceLineNo">1017</span> // initialize master side coprocessors before we start handling requests<a name="line.1017"></a>
-<span class="sourceLineNo">1018</span> status.setStatus("Initializing master coprocessors");<a name="line.1018"></a>
-<span class="sourceLineNo">1019</span> this.cpHost = new MasterCoprocessorHost(this, this.conf);<a name="line.1019"></a>
-<span class="sourceLineNo">1020</span> }<a name="line.1020"></a>
-<span class="sourceLineNo">1021</span><a name="line.1021"></a>
-<span class="sourceLineNo">1022</span> // Checking if meta needs initializing.<a name="line.1022"></a>
-<span class="sourceLineNo">1023</span> status.setStatus("Initializing meta table if this is a new deploy");<a name="line.1023"></a>
-<span class="sourceLineNo">1024</span> InitMetaProcedure initMetaProc = null;<a name="line.1024"></a>
-<span class="sourceLineNo">1025</span> // Print out state of hbase:meta on startup; helps debugging.<a name="line.1025"></a>
-<span class="sourceLineNo">1026</span> RegionState rs = this.assignmentManager.getRegionStates().<a name="line.1026"></a>
-<span class="sourceLineNo">1027</span> getRegionState(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.1027"></a>
-<span class="sourceLineNo">1028</span> LOG.info("hbase:meta {}", rs);<a name="line.1028"></a>
-<span class="sourceLineNo">1029</span> if (rs.isOffline()) {<a name="line.1029"></a>
-<span class="sourceLineNo">1030</span> Optional<InitMetaProcedure> optProc = procedureExecutor.getProcedures().stream()<a name="line.1030"></a>
-<span class="sourceLineNo">1031</span> .filter(p -> p instanceof InitMetaProcedure).map(o -> (InitMetaProcedure) o).findAny();<a name="line.1031"></a>
-<span class="sourceLineNo">1032</span> initMetaProc = optProc.orElseGet(() -> {<a name="line.1032"></a>
-<span class="sourceLineNo">1033</span> // schedule an init meta procedure if meta has not been deployed yet<a name="line.1033"></a>
-<span class="sourceLineNo">1034</span> InitMetaProcedure temp = new InitMetaProcedure();<a name="line.1034"></a>
-<span class="sourceLineNo">1035</span> procedureExecutor.submitProcedure(temp);<a name="line.1035"></a>
-<span class="sourceLineNo">1036</span> return temp;<a name="line.1036"></a>
-<span class="sourceLineNo">1037</span> });<a name="line.1037"></a>
-<span class="sourceLineNo">1038</span> }<a name="line.1038"></a>
-<span class="sourceLineNo">1039</span> if (this.balancer instanceof FavoredNodesPromoter) {<a name="line.1039"></a>
-<span class="sourceLineNo">1040</span> favoredNodesManager = new FavoredNodesManager(this);<a name="line.1040"></a>
-<span class="sourceLineNo">1041</span> }<a name="line.1041"></a>
-<span class="sourceLineNo">1042</span><a name="line.1042"></a>
-<span class="sourceLineNo">1043</span> // initialize load balancer<a name="line.1043"></a>
-<span class="sourceLineNo">1044</span> this.balancer.setMasterServices(this);<a name="line.1044"></a>
-<span class="sourceLineNo">1045</span> this.balancer.setClusterMetrics(getClusterMetricsWithoutCoprocessor());<a name="line.1045"></a>
-<span class="sourceLineNo">1046</span> this.balancer.initialize();<a name="line.1046"></a>
-<span class="sourceLineNo">1047</span><a name="line.1047"></a>
-<span class="sourceLineNo">1048</span> // start up all service threads.<a name="line.1048"></a>
-<span class="sourceLineNo">1049</span> status.setStatus("Initializing master service threads");<a name="line.1049"></a>
-<span class="sourceLineNo">1050</span> startServiceThreads();<a name="line.1050"></a>
-<span class="sourceLineNo">1051</span> // wait meta to be initialized after we start procedure executor<a name="line.1051"></a>
-<span class="sourceLineNo">1052</span> if (initMetaProc != null) {<a name="line.1052"></a>
-<span class="sourceLineNo">1053</span> initMetaProc.await();<a name="line.1053"></a>
-<span class="sourceLineNo">1054</span> }<a name="line.1054"></a>
-<span class="sourceLineNo">1055</span> // Wake up this server to check in<a name="line.1055"></a>
-<span class="sourceLineNo">1056</span> sleeper.skipSleepCycle();<a name="line.1056"></a>
-<span class="sourceLineNo">1057</span><a name="line.1057"></a>
-<span class="sourceLineNo">1058</span> // Wait for region servers to report in.<a name="line.1058"></a>
-<span class="sourceLineNo">1059</span> // With this as part of master initialization, it precludes our being able to start a single<a name="line.1059"></a>
-<span class="sourceLineNo">1060</span> // server that is both Master and RegionServer. Needs more thought. TODO.<a name="line.1060"></a>
-<span class="sourceLineNo">1061</span> String statusStr = "Wait for region servers to report in";<a name="line.1061"></a>
-<span class="sourceLineNo">1062</span> status.setStatus(statusStr);<a name="line.1062"></a>
-<span class="sourceLineNo">1063</span> LOG.info(Objects.toString(status));<a name="line.1063"></a>
-<span class="sourceLineNo">1064</span> waitForRegionServers(status);<a name="line.1064"></a>
-<span class="sourceLineNo">1065</span><a name="line.1065"></a>
-<span class="sourceLineNo">1066</span> // Check if master is shutting down because issue initializing regionservers or balancer.<a name="line.1066"></a>
-<span class="sourceLineNo">1067</span> if (isStopped()) {<a name="line.1067"></a>
-<span class="sourceLineNo">1068</span> return;<a name="line.1068"></a>
-<span class="sourceLineNo">1069</span> }<a name="line.1069"></a>
-<span class="sourceLineNo">1070</span><a name="line.1070"></a>
-<span class="sourceLineNo">1071</span> status.setStatus("Starting assignment manager");<a name="line.1071"></a>
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-<span class="sourceLineNo">1073</span> // The below cannot make progress w/o hbase:meta being online.<a name="line.1073"></a>
-<span class="sourceLineNo">1074</span> // This is the FIRST attempt at going to hbase:meta. Meta on-lining is going on in background<a name="line.1074"></a>
-<span class="sourceLineNo">1075</span> // as procedures run -- in particular SCPs for crashed servers... One should put up hbase:meta<a name="line.1075"></a>
-<span class="sourceLineNo">1076</span> // if it is down. It may take a while to come online. So, wait here until meta if for sure<a name="line.1076"></a>
-<span class="sourceLineNo">1077</span> // available. That's what waitForMetaOnline does.<a name="line.1077"></a>
-<span class="sourceLineNo">1078</span> if (!waitForMetaOnline()) {<a name="line.1078"></a>
-<span class="sourceLineNo">1079</span> return;<a name="line.1079"></a>
-<span class="sourceLineNo">1080</span> }<a name="line.1080"></a>
-<span class="sourceLineNo">1081</span> this.assignmentManager.joinCluster();<a name="line.1081"></a>
-<span class="sourceLineNo">1082</span> // The below depends on hbase:meta being online.<a name="line.1082"></a>
-<span class="sourceLineNo">1083</span> this.tableStateManager.start();<a name="line.1083"></a>
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-<span class="sourceLineNo">1086</span> // of its 'start' moving table state from zookeeper to hbase:meta. This migration needs to<a name="line.1086"></a>
-<span class="sourceLineNo">1087</span> // complete before we do this next step processing offline regions else it fails reading<a name="line.1087"></a>
-<span class="sourceLineNo">1088</span> // table states messing up master launch (namespace table, etc., are not assigned).<a name="line.1088"></a>
-<span class="sourceLineNo">1089</span> this.assignmentManager.processOfflineRegions();<a name="line.1089"></a>
-<span class="sourceLineNo">1090</span> // Initialize after meta is up as below scans meta<a name="line.1090"></a>
-<span class="sourceLineNo">1091</span> if (favoredNodesManager != null && !maintenanceMode) {<a name="line.1091"></a>
-<span class="sourceLineNo">1092</span> SnapshotOfRegionAssignmentFromMeta snapshotOfRegionAssignment =<a name="line.1092"></a>
-<span class="sourceLineNo">1093</span> new SnapshotOfRegionAssignmentFromMeta(getConnection());<a name="line.1093"></a>
-<span class="sourceLineNo">1094</span> snapshotOfRegionAssignment.initialize();<a name="line.1094"></a>
-<span class="sourceLineNo">1095</span> favoredNodesManager.initialize(snapshotOfRegionAssignment);<a name="line.1095"></a>
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-<span class="sourceLineNo">1097</span><a name="line.1097"></a>
-<span class="sourceLineNo">1098</span> // set cluster status again after user regions are assigned<a name="line.1098"></a>
-<span class="sourceLineNo">1099</span> this.balancer.setClusterMetrics(getClusterMetricsWithoutCoprocessor());<a name="line.1099"></a>
-<span class="sourceLineNo">1100</span><a name="line.1100"></a>
-<span class="sourceLineNo">1101</span> // Start balancer and meta catalog janitor after meta and regions have been assigned.<a name="line.1101"></a>
-<span class="sourceLineNo">1102</span> status.setStatus("Starting balancer and catalog janitor");<a name="line.1102"></a>
-<span class="sourceLineNo">1103</span> this.clusterStatusChore = new ClusterStatusChore(this, balancer);<a name="line.1103"></a>
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