http://git-wip-us.apache.org/repos/asf/hbase-site/blob/7bcc960d/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.InitializationMonitor.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.InitializationMonitor.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.InitializationMonitor.html index a97dfdc..2b1b6c6 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.InitializationMonitor.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/HMaster.InitializationMonitor.html @@ -2370,1287 +2370,1292 @@ <span class="sourceLineNo">2362</span> }<a name="line.2362"></a> <span class="sourceLineNo">2363</span><a name="line.2363"></a> <span class="sourceLineNo">2364</span> @Override<a name="line.2364"></a> -<span class="sourceLineNo">2365</span> public long modifyTable(final TableName tableName, final TableDescriptor descriptor,<a name="line.2365"></a> +<span class="sourceLineNo">2365</span> public long modifyTable(final TableName tableName, final TableDescriptor newDescriptor,<a name="line.2365"></a> <span class="sourceLineNo">2366</span> final long nonceGroup, final long nonce) throws IOException {<a name="line.2366"></a> <span class="sourceLineNo">2367</span> checkInitialized();<a name="line.2367"></a> -<span class="sourceLineNo">2368</span> sanityCheckTableDescriptor(descriptor);<a name="line.2368"></a> +<span class="sourceLineNo">2368</span> sanityCheckTableDescriptor(newDescriptor);<a name="line.2368"></a> <span class="sourceLineNo">2369</span><a name="line.2369"></a> <span class="sourceLineNo">2370</span> return MasterProcedureUtil.submitProcedure(<a name="line.2370"></a> <span class="sourceLineNo">2371</span> new MasterProcedureUtil.NonceProcedureRunnable(this, nonceGroup, nonce) {<a name="line.2371"></a> <span class="sourceLineNo">2372</span> @Override<a name="line.2372"></a> <span class="sourceLineNo">2373</span> protected void run() throws IOException {<a name="line.2373"></a> -<span class="sourceLineNo">2374</span> getMaster().getMasterCoprocessorHost().preModifyTable(tableName, descriptor);<a name="line.2374"></a> -<span class="sourceLineNo">2375</span><a name="line.2375"></a> -<span class="sourceLineNo">2376</span> LOG.info(getClientIdAuditPrefix() + " modify " + tableName);<a name="line.2376"></a> +<span class="sourceLineNo">2374</span> TableDescriptor oldDescriptor = getMaster().getTableDescriptors().get(tableName);<a name="line.2374"></a> +<span class="sourceLineNo">2375</span> getMaster().getMasterCoprocessorHost()<a name="line.2375"></a> +<span class="sourceLineNo">2376</span> .preModifyTable(tableName, oldDescriptor, newDescriptor);<a name="line.2376"></a> <span class="sourceLineNo">2377</span><a name="line.2377"></a> -<span class="sourceLineNo">2378</span> // Execute the operation synchronously - wait for the operation completes before continuing.<a name="line.2378"></a> -<span class="sourceLineNo">2379</span> //<a name="line.2379"></a> -<span class="sourceLineNo">2380</span> // We need to wait for the procedure to potentially fail due to "prepare" sanity<a name="line.2380"></a> -<span class="sourceLineNo">2381</span> // checks. 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Will throw exception if non-known NS.<a name="line.2405"></a> +<span class="sourceLineNo">2406</span> final TableName dstTable = TableName.valueOf(snapshotDesc.getTable());<a name="line.2406"></a> +<span class="sourceLineNo">2407</span> getClusterSchema().getNamespace(dstTable.getNamespaceAsString());<a name="line.2407"></a> +<span class="sourceLineNo">2408</span><a name="line.2408"></a> +<span class="sourceLineNo">2409</span> return MasterProcedureUtil.submitProcedure(<a name="line.2409"></a> +<span class="sourceLineNo">2410</span> new MasterProcedureUtil.NonceProcedureRunnable(this, nonceGroup, nonce) {<a name="line.2410"></a> +<span class="sourceLineNo">2411</span> @Override<a name="line.2411"></a> +<span class="sourceLineNo">2412</span> protected void run() throws IOException {<a name="line.2412"></a> +<span class="sourceLineNo">2413</span> setProcId(<a name="line.2413"></a> +<span class="sourceLineNo">2414</span> getSnapshotManager().restoreOrCloneSnapshot(snapshotDesc, getNonceKey(), restoreAcl));<a name="line.2414"></a> +<span class="sourceLineNo">2415</span> }<a name="line.2415"></a> +<span class="sourceLineNo">2416</span><a name="line.2416"></a> +<span class="sourceLineNo">2417</span> @Override<a name="line.2417"></a> +<span class="sourceLineNo">2418</span> protected String getDescription() {<a name="line.2418"></a> +<span class="sourceLineNo">2419</span> return "RestoreSnapshotProcedure";<a name="line.2419"></a> +<span class="sourceLineNo">2420</span> }<a name="line.2420"></a> +<span class="sourceLineNo">2421</span> });<a name="line.2421"></a> +<span class="sourceLineNo">2422</span> }<a name="line.2422"></a> +<span class="sourceLineNo">2423</span><a name="line.2423"></a> +<span class="sourceLineNo">2424</span> private void checkTableExists(final TableName tableName)<a name="line.2424"></a> +<span class="sourceLineNo">2425</span> throws IOException, TableNotFoundException {<a name="line.2425"></a> +<span class="sourceLineNo">2426</span> if (!MetaTableAccessor.tableExists(getConnection(), tableName)) {<a name="line.2426"></a> +<span class="sourceLineNo">2427</span> throw new TableNotFoundException(tableName);<a name="line.2427"></a> +<span class="sourceLineNo">2428</span> }<a name="line.2428"></a> +<span class="sourceLineNo">2429</span> }<a name="line.2429"></a> +<span class="sourceLineNo">2430</span><a name="line.2430"></a> +<span class="sourceLineNo">2431</span> @Override<a name="line.2431"></a> +<span class="sourceLineNo">2432</span> public void checkTableModifiable(final TableName tableName)<a name="line.2432"></a> +<span class="sourceLineNo">2433</span> throws IOException, TableNotFoundException, TableNotDisabledException {<a name="line.2433"></a> +<span class="sourceLineNo">2434</span> if (isCatalogTable(tableName)) {<a name="line.2434"></a> +<span class="sourceLineNo">2435</span> throw new IOException("Can't modify catalog tables");<a name="line.2435"></a> +<span class="sourceLineNo">2436</span> }<a name="line.2436"></a> +<span class="sourceLineNo">2437</span> checkTableExists(tableName);<a name="line.2437"></a> +<span class="sourceLineNo">2438</span> TableState ts = getTableStateManager().getTableState(tableName);<a name="line.2438"></a> +<span class="sourceLineNo">2439</span> if (!ts.isDisabled()) {<a name="line.2439"></a> +<span class="sourceLineNo">2440</span> throw new TableNotDisabledException("Not DISABLED; " + ts);<a name="line.2440"></a> +<span class="sourceLineNo">2441</span> }<a name="line.2441"></a> +<span class="sourceLineNo">2442</span> }<a name="line.2442"></a> +<span class="sourceLineNo">2443</span><a name="line.2443"></a> +<span class="sourceLineNo">2444</span> public ClusterMetrics getClusterMetricsWithoutCoprocessor() throws InterruptedIOException {<a name="line.2444"></a> +<span class="sourceLineNo">2445</span> return getClusterMetricsWithoutCoprocessor(EnumSet.allOf(Option.class));<a name="line.2445"></a> +<span class="sourceLineNo">2446</span> }<a name="line.2446"></a> +<span class="sourceLineNo">2447</span><a name="line.2447"></a> +<span class="sourceLineNo">2448</span> public ClusterMetrics getClusterMetricsWithoutCoprocessor(EnumSet<Option> options)<a name="line.2448"></a> +<span class="sourceLineNo">2449</span> throws InterruptedIOException {<a name="line.2449"></a> +<span class="sourceLineNo">2450</span> ClusterMetricsBuilder builder = ClusterMetricsBuilder.newBuilder();<a name="line.2450"></a> +<span class="sourceLineNo">2451</span> // given that hbase1 can't submit the request with Option,<a name="line.2451"></a> +<span class="sourceLineNo">2452</span> // we return all information to client if the list of Option is empty.<a name="line.2452"></a> +<span class="sourceLineNo">2453</span> if (options.isEmpty()) {<a name="line.2453"></a> +<span class="sourceLineNo">2454</span> options = EnumSet.allOf(Option.class);<a name="line.2454"></a> +<span class="sourceLineNo">2455</span> }<a name="line.2455"></a> +<span class="sourceLineNo">2456</span><a name="line.2456"></a> +<span class="sourceLineNo">2457</span> for (Option opt : options) {<a name="line.2457"></a> +<span class="sourceLineNo">2458</span> switch (opt) {<a name="line.2458"></a> +<span class="sourceLineNo">2459</span> case HBASE_VERSION: builder.setHBaseVersion(VersionInfo.getVersion()); break;<a name="line.2459"></a> +<span class="sourceLineNo">2460</span> case CLUSTER_ID: builder.setClusterId(getClusterId()); break;<a name="line.2460"></a> +<span class="sourceLineNo">2461</span> case MASTER: builder.setMasterName(getServerName()); break;<a name="line.2461"></a> +<span class="sourceLineNo">2462</span> case BACKUP_MASTERS: builder.setBackerMasterNames(getBackupMasters()); break;<a name="line.2462"></a> +<span class="sourceLineNo">2463</span> case LIVE_SERVERS: {<a name="line.2463"></a> +<span class="sourceLineNo">2464</span> if (serverManager != null) {<a name="line.2464"></a> +<span class="sourceLineNo">2465</span> builder.setLiveServerMetrics(serverManager.getOnlineServers().entrySet().stream()<a name="line.2465"></a> +<span class="sourceLineNo">2466</span> .collect(Collectors.toMap(e -> e.getKey(), e -> e.getValue())));<a name="line.2466"></a> +<span class="sourceLineNo">2467</span> }<a name="line.2467"></a> +<span class="sourceLineNo">2468</span> break;<a name="line.2468"></a> +<span class="sourceLineNo">2469</span> }<a name="line.2469"></a> +<span class="sourceLineNo">2470</span> case DEAD_SERVERS: {<a name="line.2470"></a> +<span class="sourceLineNo">2471</span> if (serverManager != null) {<a name="line.2471"></a> +<span class="sourceLineNo">2472</span> builder.setDeadServerNames(new ArrayList<>(<a name="line.2472"></a> +<span class="sourceLineNo">2473</span> serverManager.getDeadServers().copyServerNames()));<a name="line.2473"></a> +<span class="sourceLineNo">2474</span> }<a name="line.2474"></a> +<span class="sourceLineNo">2475</span> break;<a name="line.2475"></a> +<span class="sourceLineNo">2476</span> }<a name="line.2476"></a> +<span class="sourceLineNo">2477</span> case MASTER_COPROCESSORS: {<a name="line.2477"></a> +<span class="sourceLineNo">2478</span> if (cpHost != null) {<a name="line.2478"></a> +<span class="sourceLineNo">2479</span> builder.setMasterCoprocessorNames(Arrays.asList(getMasterCoprocessors()));<a name="line.2479"></a> +<span class="sourceLineNo">2480</span> }<a name="line.2480"></a> +<span class="sourceLineNo">2481</span> break;<a name="line.2481"></a> +<span class="sourceLineNo">2482</span> }<a name="line.2482"></a> +<span class="sourceLineNo">2483</span> case REGIONS_IN_TRANSITION: {<a name="line.2483"></a> +<span class="sourceLineNo">2484</span> if (assignmentManager != null) {<a name="line.2484"></a> +<span class="sourceLineNo">2485</span> builder.setRegionsInTransition(assignmentManager.getRegionStates()<a name="line.2485"></a> +<span class="sourceLineNo">2486</span> .getRegionsStateInTransition());<a name="line.2486"></a> +<span class="sourceLineNo">2487</span> }<a name="line.2487"></a> +<span class="sourceLineNo">2488</span> break;<a name="line.2488"></a> +<span class="sourceLineNo">2489</span> }<a name="line.2489"></a> +<span class="sourceLineNo">2490</span> case BALANCER_ON: {<a name="line.2490"></a> +<span class="sourceLineNo">2491</span> if (loadBalancerTracker != null) {<a name="line.2491"></a> +<span class="sourceLineNo">2492</span> builder.setBalancerOn(loadBalancerTracker.isBalancerOn());<a name="line.2492"></a> +<span class="sourceLineNo">2493</span> }<a name="line.2493"></a> +<span class="sourceLineNo">2494</span> break;<a name="line.2494"></a> +<span class="sourceLineNo">2495</span> }<a name="line.2495"></a> +<span class="sourceLineNo">2496</span> case MASTER_INFO_PORT: {<a name="line.2496"></a> +<span class="sourceLineNo">2497</span> if (infoServer != null) {<a name="line.2497"></a> +<span class="sourceLineNo">2498</span> builder.setMasterInfoPort(infoServer.getPort());<a name="line.2498"></a> +<span class="sourceLineNo">2499</span> }<a name="line.2499"></a> +<span class="sourceLineNo">2500</span> break;<a name="line.2500"></a> +<span class="sourceLineNo">2501</span> }<a name="line.2501"></a> +<span class="sourceLineNo">2502</span> }<a name="line.2502"></a> +<span class="sourceLineNo">2503</span> }<a name="line.2503"></a> +<span class="sourceLineNo">2504</span> return builder.build();<a name="line.2504"></a> +<span class="sourceLineNo">2505</span> }<a name="line.2505"></a> +<span class="sourceLineNo">2506</span><a name="line.2506"></a> +<span class="sourceLineNo">2507</span> /**<a name="line.2507"></a> +<span class="sourceLineNo">2508</span> * @return cluster status<a name="line.2508"></a> +<span class="sourceLineNo">2509</span> */<a name="line.2509"></a> +<span class="sourceLineNo">2510</span> public ClusterMetrics getClusterMetrics() throws IOException {<a name="line.2510"></a> +<span class="sourceLineNo">2511</span> return getClusterMetrics(EnumSet.allOf(Option.class));<a name="line.2511"></a> +<span class="sourceLineNo">2512</span> }<a name="line.2512"></a> +<span class="sourceLineNo">2513</span><a name="line.2513"></a> +<span class="sourceLineNo">2514</span> public ClusterMetrics getClusterMetrics(EnumSet<Option> options) throws IOException {<a name="line.2514"></a> +<span class="sourceLineNo">2515</span> if (cpHost != null) {<a name="line.2515"></a> +<span class="sourceLineNo">2516</span> cpHost.preGetClusterMetrics();<a name="line.2516"></a> +<span class="sourceLineNo">2517</span> }<a name="line.2517"></a> +<span class="sourceLineNo">2518</span> ClusterMetrics status = getClusterMetricsWithoutCoprocessor(options);<a name="line.2518"></a> +<span class="sourceLineNo">2519</span> if (cpHost != null) {<a name="line.2519"></a> +<span class="sourceLineNo">2520</span> cpHost.postGetClusterMetrics(status);<a name="line.2520"></a> +<span class="sourceLineNo">2521</span> }<a name="line.2521"></a> +<span class="sourceLineNo">2522</span> return status;<a name="line.2522"></a> +<span class="sourceLineNo">2523</span> }<a name="line.2523"></a> +<span class="sourceLineNo">2524</span><a name="line.2524"></a> +<span class="sourceLineNo">2525</span> private List<ServerName> getBackupMasters() throws InterruptedIOException {<a name="line.2525"></a> +<span class="sourceLineNo">2526</span> // Build Set of backup masters from ZK nodes<a name="line.2526"></a> +<span class="sourceLineNo">2527</span> List<String> backupMasterStrings;<a name="line.2527"></a> +<span class="sourceLineNo">2528</span> try {<a name="line.2528"></a> +<span class="sourceLineNo">2529</span> backupMasterStrings = ZKUtil.listChildrenNoWatch(this.zooKeeper,<a name="line.2529"></a> +<span class="sourceLineNo">2530</span> this.zooKeeper.znodePaths.backupMasterAddressesZNode);<a name="line.2530"></a> +<span class="sourceLineNo">2531</span> } catch (KeeperException e) {<a name="line.2531"></a> +<span class="sourceLineNo">2532</span> LOG.warn(this.zooKeeper.prefix("Unable to list backup servers"), e);<a name="line.2532"></a> +<span class="sourceLineNo">2533</span> backupMasterStrings = null;<a name="line.2533"></a> +<span class="sourceLineNo">2534</span> }<a name="line.2534"></a> +<span class="sourceLineNo">2535</span><a name="line.2535"></a> +<span class="sourceLineNo">2536</span> List<ServerName> backupMasters = Collections.emptyList();<a name="line.2536"></a> +<span class="sourceLineNo">2537</span> if (backupMasterStrings != null && !backupMasterStrings.isEmpty()) {<a name="line.2537"></a> +<span class="sourceLineNo">2538</span> backupMasters = new ArrayList<>(backupMasterStrings.size());<a name="line.2538"></a> +<span class="sourceLineNo">2539</span> for (String s: backupMasterStrings) {<a name="line.2539"></a> +<span class="sourceLineNo">2540</span> try {<a name="line.2540"></a> +<span class="sourceLineNo">2541</span> byte [] bytes;<a name="line.2541"></a> +<span class="sourceLineNo">2542</span> try {<a name="line.2542"></a> +<span class="sourceLineNo">2543</span> bytes = ZKUtil.getData(this.zooKeeper, ZNodePaths.joinZNode(<a name="line.2543"></a> +<span class="sourceLineNo">2544</span> this.zooKeeper.znodePaths.backupMasterAddressesZNode, s));<a name="line.2544"></a> +<span class="sourceLineNo">2545</span> } catch (InterruptedException e) {<a name="line.2545"></a> +<span class="sourceLineNo">2546</span> throw new InterruptedIOException();<a name="line.2546"></a> +<span class="sourceLineNo">2547</span> }<a name="line.2547"></a> +<span class="sourceLineNo">2548</span> if (bytes != null) {<a name="line.2548"></a> +<span class="sourceLineNo">2549</span> ServerName sn;<a name="line.2549"></a> +<span class="sourceLineNo">2550</span> try {<a name="line.2550"></a> +<span class="sourceLineNo">2551</span> sn = ProtobufUtil.parseServerNameFrom(bytes);<a name="line.2551"></a> +<span class="sourceLineNo">2552</span> } catch (DeserializationException e) {<a name="line.2552"></a> +<span class="sourceLineNo">2553</span> LOG.warn("Failed parse, skipping registering backup server", e);<a name="line.2553"></a> +<span class="sourceLineNo">2554</span> continue;<a name="line.2554"></a> +<span class="sourceLineNo">2555</span> }<a name="line.2555"></a> +<span class="sourceLineNo">2556</span> backupMasters.add(sn);<a name="line.2556"></a> +<span class="sourceLineNo">2557</span> }<a name="line.2557"></a> +<span class="sourceLineNo">2558</span> } catch (KeeperException e) {<a name="line.2558"></a> +<span class="sourceLineNo">2559</span> LOG.warn(this.zooKeeper.prefix("Unable to get information about " +<a name="line.2559"></a> +<span class="sourceLineNo">2560</span> "backup servers"), e);<a name="line.2560"></a> +<span class="sourceLineNo">2561</span> }<a name="line.2561"></a> +<span class="sourceLineNo">2562</span> }<a name="line.2562"></a> +<span class="sourceLineNo">2563</span> Collections.sort(backupMasters, new Comparator<ServerName>() {<a name="line.2563"></a> +<span class="sourceLineNo">2564</span> @Override<a name="line.2564"></a> +<span class="sourceLineNo">2565</span> public int compare(ServerName s1, ServerName s2) {<a name="line.2565"></a> +<span class="sourceLineNo">2566</span> return s1.getServerName().compareTo(s2.getServerName());<a name="line.2566"></a> +<span class="sourceLineNo">2567</span> }});<a name="line.2567"></a> +<span class="sourceLineNo">2568</span> }<a name="line.2568"></a> +<span class="sourceLineNo">2569</span> return backupMasters;<a name="line.2569"></a> +<span class="sourceLineNo">2570</span> }<a name="line.2570"></a> +<span class="sourceLineNo">2571</span><a name="line.2571"></a> +<span class="sourceLineNo">2572</span> /**<a name="line.2572"></a> +<span class="sourceLineNo">2573</span> * The set of loaded coprocessors is stored in a static set. Since it's<a name="line.2573"></a> +<span class="sourceLineNo">2574</span> * statically allocated, it does not require that HMaster's cpHost be<a name="line.2574"></a> +<span class="sourceLineNo">2575</span> * initialized prior to accessing it.<a name="line.2575"></a> +<span class="sourceLineNo">2576</span> * @return a String representation of the set of names of the loaded coprocessors.<a name="line.2576"></a> +<span class="sourceLineNo">2577</span> */<a name="line.2577"></a> +<span class="sourceLineNo">2578</span> public static String getLoadedCoprocessors() {<a name="line.2578"></a> +<span class="sourceLineNo">2579</span> return CoprocessorHost.getLoadedCoprocessors().toString();<a name="line.2579"></a> +<span class="sourceLineNo">2580</span> }<a name="line.2580"></a> +<span class="sourceLineNo">2581</span><a name="line.2581"></a> +<span class="sourceLineNo">2582</span> /**<a name="line.2582"></a> +<span class="sourceLineNo">2583</span> * @return timestamp in millis when HMaster was started.<a name="line.2583"></a> +<span class="sourceLineNo">2584</span> */<a name="line.2584"></a> +<span class="sourceLineNo">2585</span> public long getMasterStartTime() {<a name="line.2585"></a> +<span class="sourceLineNo">2586</span> return startcode;<a name="line.2586"></a> +<span class="sourceLineNo">2587</span> }<a name="line.2587"></a> +<span class="sourceLineNo">2588</span><a name="line.2588"></a> +<span class="sourceLineNo">2589</span> /**<a name="line.2589"></a> +<span class="sourceLineNo">2590</span> * @return timestamp in millis when HMaster became the active master.<a name="line.2590"></a> +<span class="sourceLineNo">2591</span> */<a name="line.2591"></a> +<span class="sourceLineNo">2592</span> public long getMasterActiveTime() {<a name="line.2592"></a> +<span class="sourceLineNo">2593</span> return masterActiveTime;<a name="line.2593"></a> +<span class="sourceLineNo">2594</span> }<a name="line.2594"></a> +<span class="sourceLineNo">2595</span><a name="line.2595"></a> +<span class="sourceLineNo">2596</span> /**<a name="line.2596"></a> +<span class="sourceLineNo">2597</span> * @return timestamp in millis when HMaster finished becoming the active master<a name="line.2597"></a> +<span class="sourceLineNo">2598</span> */<a name="line.2598"></a> +<span class="sourceLineNo">2599</span> public long getMasterFinishedInitializationTime() {<a name="line.2599"></a> +<span class="sourceLineNo">2600</span> return masterFinishedInitializationTime;<a name="line.2600"></a> +<span class="sourceLineNo">2601</span> }<a name="line.2601"></a> +<span class="sourceLineNo">2602</span><a name="line.2602"></a> +<span class="sourceLineNo">2603</span> public int getNumWALFiles() {<a name="line.2603"></a> +<span class="sourceLineNo">2604</span> return procedureStore != null ? procedureStore.getActiveLogs().size() : 0;<a name="line.2604"></a> +<span class="sourceLineNo">2605</span> }<a name="line.2605"></a> +<span class="sourceLineNo">2606</span><a name="line.2606"></a> +<span class="sourceLineNo">2607</span> public WALProcedureStore getWalProcedureStore() {<a name="line.2607"></a> +<span class="sourceLineNo">2608</span> return procedureStore;<a name="line.2608"></a> +<span class="sourceLineNo">2609</span> }<a name="line.2609"></a> +<span class="sourceLineNo">2610</span><a name="line.2610"></a> +<span class="sourceLineNo">2611</span> public int getRegionServerInfoPort(final ServerName sn) {<a name="line.2611"></a> +<span class="sourceLineNo">2612</span> RegionServerInfo info = this.regionServerTracker.getRegionServerInfo(sn);<a name="line.2612"></a> +<span class="sourceLineNo">2613</span> if (info == null || info.getInfoPort() == 0) {<a name="line.2613"></a> +<span class="sourceLineNo">2614</span> return conf.getInt(HConstants.REGIONSERVER_INFO_PORT,<a name="line.2614"></a> +<span class="sourceLineNo">2615</span> HConstants.DEFAULT_REGIONSERVER_INFOPORT);<a name="line.2615"></a> +<span class="sourceLineNo">2616</span> }<a name="line.2616"></a> +<span class="sourceLineNo">2617</span> return info.getInfoPort();<a name="line.2617"></a> +<span class="sourceLineNo">2618</span> }<a name="line.2618"></a> +<span class="sourceLineNo">2619</span><a name="line.2619"></a> +<span class="sourceLineNo">2620</span> @Override<a name="line.2620"></a> +<span class="sourceLineNo">2621</span> public String getRegionServerVersion(final ServerName sn) {<a name="line.2621"></a> +<span class="sourceLineNo">2622</span> RegionServerInfo info = this.regionServerTracker.getRegionServerInfo(sn);<a name="line.2622"></a> +<span class="sourceLineNo">2623</span> if (info != null && info.hasVersionInfo()) {<a name="line.2623"></a> +<span class="sourceLineNo">2624</span> return info.getVersionInfo().getVersion();<a name="line.2624"></a> +<span class="sourceLineNo">2625</span> }<a name="line.2625"></a> +<span class="sourceLineNo">2626</span> return "0.0.0"; //Lowest version to prevent move system region to unknown version RS.<a name="line.2626"></a> +<span 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