http://git-wip-us.apache.org/repos/asf/hbase-site/blob/738e976e/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html index eecf20f..df4d2d2 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.html @@ -1218,664 +1218,665 @@ <span class="sourceLineNo">1210</span> long startTime = System.nanoTime();<a name="line.1210"></a> <span class="sourceLineNo">1211</span> LOG.debug("Joining cluster...");<a name="line.1211"></a> <span class="sourceLineNo">1212</span><a name="line.1212"></a> -<span class="sourceLineNo">1213</span> // Scan hbase:meta to build list of existing regions, servers, and assignment<a name="line.1213"></a> -<span class="sourceLineNo">1214</span> // hbase:meta is online when we get to here and TableStateManager has been started.<a name="line.1214"></a> -<span class="sourceLineNo">1215</span> loadMeta();<a name="line.1215"></a> -<span class="sourceLineNo">1216</span><a name="line.1216"></a> -<span class="sourceLineNo">1217</span> while (master.getServerManager().countOfRegionServers() < 1) {<a name="line.1217"></a> -<span class="sourceLineNo">1218</span> LOG.info("Waiting for RegionServers to join; current count={}",<a name="line.1218"></a> -<span class="sourceLineNo">1219</span> master.getServerManager().countOfRegionServers());<a name="line.1219"></a> -<span class="sourceLineNo">1220</span> Threads.sleep(250);<a name="line.1220"></a> -<span class="sourceLineNo">1221</span> }<a name="line.1221"></a> -<span class="sourceLineNo">1222</span> LOG.info("Number of RegionServers={}", master.getServerManager().countOfRegionServers());<a name="line.1222"></a> -<span class="sourceLineNo">1223</span><a name="line.1223"></a> -<span class="sourceLineNo">1224</span> processOfflineRegions();<a name="line.1224"></a> -<span class="sourceLineNo">1225</span><a name="line.1225"></a> -<span class="sourceLineNo">1226</span> // Start the RIT chore<a name="line.1226"></a> -<span class="sourceLineNo">1227</span> master.getMasterProcedureExecutor().addChore(this.ritChore);<a name="line.1227"></a> -<span class="sourceLineNo">1228</span><a name="line.1228"></a> -<span class="sourceLineNo">1229</span> long costMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime);<a name="line.1229"></a> -<span class="sourceLineNo">1230</span> LOG.info("Joined the cluster in {}", StringUtils.humanTimeDiff(costMs));<a name="line.1230"></a> -<span class="sourceLineNo">1231</span> }<a name="line.1231"></a> -<span class="sourceLineNo">1232</span><a name="line.1232"></a> -<span class="sourceLineNo">1233</span> // Create assign procedure for offline regions.<a name="line.1233"></a> -<span class="sourceLineNo">1234</span> // Just follow the old processofflineServersWithOnlineRegions method. Since now we do not need to<a name="line.1234"></a> -<span class="sourceLineNo">1235</span> // deal with dead server any more, we only deal with the regions in OFFLINE state in this method.<a name="line.1235"></a> -<span class="sourceLineNo">1236</span> // And this is a bit strange, that for new regions, we will add it in CLOSED state instead of<a name="line.1236"></a> -<span class="sourceLineNo">1237</span> // OFFLINE state, and usually there will be a procedure to track them. The<a name="line.1237"></a> -<span class="sourceLineNo">1238</span> // processofflineServersWithOnlineRegions is a legacy from long ago, as things are going really<a name="line.1238"></a> -<span class="sourceLineNo">1239</span> // different now, maybe we do not need this method any more. Need to revisit later.<a name="line.1239"></a> -<span class="sourceLineNo">1240</span> private void processOfflineRegions() {<a name="line.1240"></a> -<span class="sourceLineNo">1241</span> List<RegionInfo> offlineRegions = regionStates.getRegionStates().stream()<a name="line.1241"></a> -<span class="sourceLineNo">1242</span> .filter(RegionState::isOffline).filter(s -> isTableEnabled(s.getRegion().getTable()))<a name="line.1242"></a> -<span class="sourceLineNo">1243</span> .map(RegionState::getRegion).collect(Collectors.toList());<a name="line.1243"></a> -<span class="sourceLineNo">1244</span> if (!offlineRegions.isEmpty()) {<a name="line.1244"></a> -<span class="sourceLineNo">1245</span> master.getMasterProcedureExecutor().submitProcedures(<a name="line.1245"></a> -<span class="sourceLineNo">1246</span> master.getAssignmentManager().createRoundRobinAssignProcedures(offlineRegions));<a name="line.1246"></a> -<span class="sourceLineNo">1247</span> }<a name="line.1247"></a> -<span class="sourceLineNo">1248</span> }<a name="line.1248"></a> -<span class="sourceLineNo">1249</span><a name="line.1249"></a> -<span class="sourceLineNo">1250</span> private void loadMeta() throws IOException {<a name="line.1250"></a> -<span class="sourceLineNo">1251</span> // TODO: use a thread pool<a name="line.1251"></a> -<span class="sourceLineNo">1252</span> regionStateStore.visitMeta(new RegionStateStore.RegionStateVisitor() {<a name="line.1252"></a> -<span class="sourceLineNo">1253</span> @Override<a name="line.1253"></a> -<span class="sourceLineNo">1254</span> public void visitRegionState(Result result, final RegionInfo regionInfo, final State state,<a name="line.1254"></a> -<span class="sourceLineNo">1255</span> final ServerName regionLocation, final ServerName lastHost, final long openSeqNum) {<a name="line.1255"></a> -<span class="sourceLineNo">1256</span> if (state == null && regionLocation == null && lastHost == null &&<a name="line.1256"></a> -<span class="sourceLineNo">1257</span> openSeqNum == SequenceId.NO_SEQUENCE_ID) {<a name="line.1257"></a> -<span class="sourceLineNo">1258</span> // This is a row with nothing in it.<a name="line.1258"></a> -<span class="sourceLineNo">1259</span> LOG.warn("Skipping empty row={}", result);<a name="line.1259"></a> -<span class="sourceLineNo">1260</span> return;<a name="line.1260"></a> -<span class="sourceLineNo">1261</span> }<a name="line.1261"></a> -<span class="sourceLineNo">1262</span> State localState = state;<a name="line.1262"></a> -<span class="sourceLineNo">1263</span> if (localState == null) {<a name="line.1263"></a> -<span class="sourceLineNo">1264</span> // No region state column data in hbase:meta table! Are I doing a rolling upgrade from<a name="line.1264"></a> -<span class="sourceLineNo">1265</span> // hbase1 to hbase2? Am I restoring a SNAPSHOT or otherwise adding a region to hbase:meta?<a name="line.1265"></a> -<span class="sourceLineNo">1266</span> // In any of these cases, state is empty. For now, presume OFFLINE but there are probably<a name="line.1266"></a> -<span class="sourceLineNo">1267</span> // cases where we need to probe more to be sure this correct; TODO informed by experience.<a name="line.1267"></a> -<span class="sourceLineNo">1268</span> LOG.info(regionInfo.getEncodedName() + " regionState=null; presuming " + State.OFFLINE);<a name="line.1268"></a> -<span class="sourceLineNo">1269</span><a name="line.1269"></a> -<span class="sourceLineNo">1270</span> localState = State.OFFLINE;<a name="line.1270"></a> -<span class="sourceLineNo">1271</span> }<a name="line.1271"></a> -<span class="sourceLineNo">1272</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(regionInfo);<a name="line.1272"></a> -<span class="sourceLineNo">1273</span> // Do not need to lock on regionNode, as we can make sure that before we finish loading<a name="line.1273"></a> -<span class="sourceLineNo">1274</span> // meta, all the related procedures can not be executed. The only exception is formeta<a name="line.1274"></a> -<span class="sourceLineNo">1275</span> // region related operations, but here we do not load the informations for meta region.<a name="line.1275"></a> -<span class="sourceLineNo">1276</span> regionNode.setState(localState);<a name="line.1276"></a> -<span class="sourceLineNo">1277</span> regionNode.setLastHost(lastHost);<a name="line.1277"></a> -<span class="sourceLineNo">1278</span> regionNode.setRegionLocation(regionLocation);<a name="line.1278"></a> -<span class="sourceLineNo">1279</span> regionNode.setOpenSeqNum(openSeqNum);<a name="line.1279"></a> -<span class="sourceLineNo">1280</span><a name="line.1280"></a> -<span class="sourceLineNo">1281</span> if (localState == State.OPEN) {<a name="line.1281"></a> -<span class="sourceLineNo">1282</span> assert regionLocation != null : "found null region location for " + regionNode;<a name="line.1282"></a> -<span class="sourceLineNo">1283</span> regionStates.addRegionToServer(regionNode);<a name="line.1283"></a> -<span class="sourceLineNo">1284</span> } else if (localState == State.OFFLINE || regionInfo.isOffline()) {<a name="line.1284"></a> -<span class="sourceLineNo">1285</span> regionStates.addToOfflineRegions(regionNode);<a name="line.1285"></a> -<span class="sourceLineNo">1286</span> }<a name="line.1286"></a> -<span class="sourceLineNo">1287</span> }<a name="line.1287"></a> -<span class="sourceLineNo">1288</span> });<a name="line.1288"></a> -<span class="sourceLineNo">1289</span><a name="line.1289"></a> -<span class="sourceLineNo">1290</span> // every assignment is blocked until meta is loaded.<a name="line.1290"></a> -<span class="sourceLineNo">1291</span> wakeMetaLoadedEvent();<a name="line.1291"></a> -<span class="sourceLineNo">1292</span> }<a name="line.1292"></a> -<span class="sourceLineNo">1293</span><a name="line.1293"></a> -<span class="sourceLineNo">1294</span> /**<a name="line.1294"></a> -<span class="sourceLineNo">1295</span> * Used to check if the meta loading is done.<a name="line.1295"></a> -<span class="sourceLineNo">1296</span> * <p/><a name="line.1296"></a> -<span class="sourceLineNo">1297</span> * if not we throw PleaseHoldException since we are rebuilding the RegionStates<a name="line.1297"></a> -<span class="sourceLineNo">1298</span> * @param hri region to check if it is already rebuild<a name="line.1298"></a> -<span class="sourceLineNo">1299</span> * @throws PleaseHoldException if meta has not been loaded yet<a name="line.1299"></a> -<span class="sourceLineNo">1300</span> */<a name="line.1300"></a> -<span class="sourceLineNo">1301</span> private void checkMetaLoaded(RegionInfo hri) throws PleaseHoldException {<a name="line.1301"></a> -<span class="sourceLineNo">1302</span> if (!isRunning()) {<a name="line.1302"></a> -<span class="sourceLineNo">1303</span> throw new PleaseHoldException("AssignmentManager not running");<a name="line.1303"></a> -<span class="sourceLineNo">1304</span> }<a name="line.1304"></a> -<span class="sourceLineNo">1305</span> boolean meta = isMetaRegion(hri);<a name="line.1305"></a> -<span class="sourceLineNo">1306</span> boolean metaLoaded = isMetaLoaded();<a name="line.1306"></a> -<span class="sourceLineNo">1307</span> if (!meta && !metaLoaded) {<a name="line.1307"></a> -<span class="sourceLineNo">1308</span> throw new PleaseHoldException(<a name="line.1308"></a> -<span class="sourceLineNo">1309</span> "Master not fully online; hbase:meta=" + meta + ", metaLoaded=" + metaLoaded);<a name="line.1309"></a> -<span class="sourceLineNo">1310</span> }<a name="line.1310"></a> -<span class="sourceLineNo">1311</span> }<a name="line.1311"></a> -<span class="sourceLineNo">1312</span><a name="line.1312"></a> -<span class="sourceLineNo">1313</span> // ============================================================================================<a name="line.1313"></a> -<span class="sourceLineNo">1314</span> // TODO: Metrics<a name="line.1314"></a> -<span class="sourceLineNo">1315</span> // ============================================================================================<a name="line.1315"></a> -<span class="sourceLineNo">1316</span> public int getNumRegionsOpened() {<a name="line.1316"></a> -<span class="sourceLineNo">1317</span> // TODO: Used by TestRegionPlacement.java and assume monotonically increasing value<a name="line.1317"></a> -<span class="sourceLineNo">1318</span> return 0;<a name="line.1318"></a> -<span class="sourceLineNo">1319</span> }<a name="line.1319"></a> -<span class="sourceLineNo">1320</span><a name="line.1320"></a> -<span class="sourceLineNo">1321</span> public void submitServerCrash(final ServerName serverName, final boolean shouldSplitWal) {<a name="line.1321"></a> -<span class="sourceLineNo">1322</span> boolean carryingMeta = isCarryingMeta(serverName);<a name="line.1322"></a> -<span class="sourceLineNo">1323</span> ProcedureExecutor<MasterProcedureEnv> procExec = this.master.getMasterProcedureExecutor();<a name="line.1323"></a> -<span class="sourceLineNo">1324</span> procExec.submitProcedure(new ServerCrashProcedure(procExec.getEnvironment(), serverName,<a name="line.1324"></a> -<span class="sourceLineNo">1325</span> shouldSplitWal, carryingMeta));<a name="line.1325"></a> -<span class="sourceLineNo">1326</span> LOG.debug("Added=" + serverName +<a name="line.1326"></a> -<span class="sourceLineNo">1327</span> " to dead servers, submitted shutdown handler to be executed meta=" + carryingMeta);<a name="line.1327"></a> -<span class="sourceLineNo">1328</span> }<a name="line.1328"></a> -<span class="sourceLineNo">1329</span><a name="line.1329"></a> -<span class="sourceLineNo">1330</span> public void offlineRegion(final RegionInfo regionInfo) {<a name="line.1330"></a> -<span class="sourceLineNo">1331</span> // TODO used by MasterRpcServices<a name="line.1331"></a> -<span class="sourceLineNo">1332</span> RegionStateNode node = regionStates.getRegionStateNode(regionInfo);<a name="line.1332"></a> -<span class="sourceLineNo">1333</span> if (node != null) {<a name="line.1333"></a> -<span class="sourceLineNo">1334</span> node.offline();<a name="line.1334"></a> -<span class="sourceLineNo">1335</span> }<a name="line.1335"></a> -<span class="sourceLineNo">1336</span> }<a name="line.1336"></a> -<span class="sourceLineNo">1337</span><a name="line.1337"></a> -<span class="sourceLineNo">1338</span> public void onlineRegion(final RegionInfo regionInfo, final ServerName serverName) {<a name="line.1338"></a> -<span class="sourceLineNo">1339</span> // TODO used by TestSplitTransactionOnCluster.java<a name="line.1339"></a> -<span class="sourceLineNo">1340</span> }<a name="line.1340"></a> -<span class="sourceLineNo">1341</span><a name="line.1341"></a> -<span class="sourceLineNo">1342</span> public Map<ServerName, List<RegionInfo>> getSnapShotOfAssignment(<a name="line.1342"></a> -<span class="sourceLineNo">1343</span> final Collection<RegionInfo> regions) {<a name="line.1343"></a> -<span class="sourceLineNo">1344</span> return regionStates.getSnapShotOfAssignment(regions);<a name="line.1344"></a> -<span class="sourceLineNo">1345</span> }<a name="line.1345"></a> -<span class="sourceLineNo">1346</span><a name="line.1346"></a> -<span class="sourceLineNo">1347</span> // ============================================================================================<a name="line.1347"></a> -<span class="sourceLineNo">1348</span> // TODO: UTILS/HELPERS?<a name="line.1348"></a> -<span class="sourceLineNo">1349</span> // ============================================================================================<a name="line.1349"></a> -<span class="sourceLineNo">1350</span> /**<a name="line.1350"></a> -<span class="sourceLineNo">1351</span> * Used by the client (via master) to identify if all regions have the schema updates<a name="line.1351"></a> -<span class="sourceLineNo">1352</span> *<a name="line.1352"></a> -<span class="sourceLineNo">1353</span> * @param tableName<a name="line.1353"></a> -<span class="sourceLineNo">1354</span> * @return Pair indicating the status of the alter command (pending/total)<a name="line.1354"></a> -<span class="sourceLineNo">1355</span> * @throws IOException<a name="line.1355"></a> -<span class="sourceLineNo">1356</span> */<a name="line.1356"></a> -<span class="sourceLineNo">1357</span> public Pair<Integer, Integer> getReopenStatus(TableName tableName) {<a name="line.1357"></a> -<span class="sourceLineNo">1358</span> if (isTableDisabled(tableName)) return new Pair<Integer, Integer>(0, 0);<a name="line.1358"></a> -<span class="sourceLineNo">1359</span><a name="line.1359"></a> -<span class="sourceLineNo">1360</span> final List<RegionState> states = regionStates.getTableRegionStates(tableName);<a name="line.1360"></a> -<span class="sourceLineNo">1361</span> int ritCount = 0;<a name="line.1361"></a> -<span class="sourceLineNo">1362</span> for (RegionState 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-<span class="sourceLineNo">1372</span> return regionStates.hasRegionsInTransition();<a name="line.1372"></a> -<span class="sourceLineNo">1373</span> }<a name="line.1373"></a> -<span class="sourceLineNo">1374</span><a name="line.1374"></a> -<span class="sourceLineNo">1375</span> public List<RegionStateNode> getRegionsInTransition() {<a name="line.1375"></a> -<span class="sourceLineNo">1376</span> return regionStates.getRegionsInTransition();<a name="line.1376"></a> -<span class="sourceLineNo">1377</span> }<a name="line.1377"></a> -<span class="sourceLineNo">1378</span><a name="line.1378"></a> -<span class="sourceLineNo">1379</span> public List<RegionInfo> getAssignedRegions() {<a name="line.1379"></a> -<span class="sourceLineNo">1380</span> return regionStates.getAssignedRegions();<a name="line.1380"></a> -<span class="sourceLineNo">1381</span> }<a name="line.1381"></a> -<span class="sourceLineNo">1382</span><a name="line.1382"></a> -<span class="sourceLineNo">1383</span> public RegionInfo getRegionInfo(final byte[] regionName) {<a name="line.1383"></a> -<span class="sourceLineNo">1384</span> final RegionStateNode regionState = regionStates.getRegionStateNodeFromName(regionName);<a name="line.1384"></a> -<span class="sourceLineNo">1385</span> return regionState != null ? regionState.getRegionInfo() : null;<a name="line.1385"></a> -<span class="sourceLineNo">1386</span> }<a name="line.1386"></a> -<span class="sourceLineNo">1387</span><a name="line.1387"></a> -<span class="sourceLineNo">1388</span> // ============================================================================================<a name="line.1388"></a> -<span class="sourceLineNo">1389</span> // Expected states on region state transition.<a name="line.1389"></a> -<span class="sourceLineNo">1390</span> // Notice that there is expected states for transiting to OPENING state, this is because SCP.<a name="line.1390"></a> -<span class="sourceLineNo">1391</span> // See the comments in regionOpening method for more details.<a name="line.1391"></a> -<span class="sourceLineNo">1392</span> // ============================================================================================<a name="line.1392"></a> -<span class="sourceLineNo">1393</span> private static final State[] STATES_EXPECTED_ON_OPEN = {<a name="line.1393"></a> -<span class="sourceLineNo">1394</span> State.OPENING, // Normal case<a name="line.1394"></a> -<span class="sourceLineNo">1395</span> State.OPEN // Retrying<a name="line.1395"></a> -<span class="sourceLineNo">1396</span> };<a name="line.1396"></a> -<span class="sourceLineNo">1397</span><a name="line.1397"></a> -<span class="sourceLineNo">1398</span> private static final State[] STATES_EXPECTED_ON_CLOSING = {<a name="line.1398"></a> -<span class="sourceLineNo">1399</span> State.OPEN, // Normal case<a name="line.1399"></a> -<span class="sourceLineNo">1400</span> State.CLOSING, // Retrying<a name="line.1400"></a> -<span class="sourceLineNo">1401</span> State.SPLITTING, // Offline the split parent<a name="line.1401"></a> -<span class="sourceLineNo">1402</span> State.MERGING // Offline the merge parents<a name="line.1402"></a> -<span class="sourceLineNo">1403</span> };<a name="line.1403"></a> -<span class="sourceLineNo">1404</span><a name="line.1404"></a> -<span class="sourceLineNo">1405</span> private static final State[] STATES_EXPECTED_ON_CLOSED = {<a name="line.1405"></a> -<span class="sourceLineNo">1406</span> State.CLOSING, // Normal case<a name="line.1406"></a> -<span class="sourceLineNo">1407</span> State.CLOSED // Retrying<a name="line.1407"></a> -<span class="sourceLineNo">1408</span> };<a name="line.1408"></a> -<span class="sourceLineNo">1409</span><a name="line.1409"></a> -<span class="sourceLineNo">1410</span> // This is for manually scheduled region assign, can add other states later if we find out other<a name="line.1410"></a> -<span class="sourceLineNo">1411</span> // usages<a name="line.1411"></a> -<span class="sourceLineNo">1412</span> 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class="sourceLineNo">1666</span> if (!isRunning()) return null;<a name="line.1666"></a> -<span class="sourceLineNo">1667</span> assignQueueFullCond.await(assignDispatchWaitMillis, TimeUnit.MILLISECONDS);<a name="line.1667"></a> -<span class="sourceLineNo">1668</span> regions = new HashMap<RegionInfo, RegionStateNode>(pendingAssignQueue.size());<a name="line.1668"></a> -<span class="sourceLineNo">1669</span> for (RegionStateNode regionNode: pendingAssignQueue) {<a name="line.1669"></a> -<span class="sourceLineNo">1670</span> regions.put(regionNode.getRegionInfo(), regionNode);<a name="line.1670"></a> -<span class="sourceLineNo">1671</span> }<a name="line.1671"></a> -<span class="sourceLineNo">1672</span> pendingAssignQueue.clear();<a name="line.1672"></a> -<span class="sourceLineNo">1673</span> } catch (InterruptedException e) {<a name="line.1673"></a> -<span class="sourceLineNo">1674</span> LOG.warn("got interrupted ", e);<a name="line.1674"></a> -<span class="sourceLineNo">1675</span> Thread.currentThread().interrupt();<a name="line.1675"></a> -<span class="sourceLineNo">1676</span> } finally {<a name="line.1676"></a> -<span class="sourceLineNo">1677</span> assignQueueLock.unlock();<a name="line.1677"></a> -<span class="sourceLineNo">1678</span> }<a name="line.1678"></a> -<span class="sourceLineNo">1679</span> return regions;<a name="line.1679"></a> -<span class="sourceLineNo">1680</span> }<a name="line.1680"></a> -<span class="sourceLineNo">1681</span><a name="line.1681"></a> -<span class="sourceLineNo">1682</span> private void processAssignQueue() {<a name="line.1682"></a> -<span class="sourceLineNo">1683</span> final HashMap<RegionInfo, RegionStateNode> regions = waitOnAssignQueue();<a name="line.1683"></a> -<span class="sourceLineNo">1684</span> if (regions == null || regions.size() == 0 || !isRunning()) {<a name="line.1684"></a> -<span class="sourceLineNo">1685</span> return;<a name="line.1685"></a> -<span class="sourceLineNo">1686</span> }<a 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= new ArrayList<>();<a name="line.1696"></a> -<span class="sourceLineNo">1697</span> for (RegionStateNode regionStateNode: regions.values()) {<a name="line.1697"></a> -<span class="sourceLineNo">1698</span> boolean sysTable = regionStateNode.isSystemTable();<a name="line.1698"></a> -<span class="sourceLineNo">1699</span> final List<RegionInfo> hris = sysTable? systemHRIs: userHRIs;<a name="line.1699"></a> -<span class="sourceLineNo">1700</span> if (regionStateNode.getRegionLocation() != null) {<a name="line.1700"></a> -<span class="sourceLineNo">1701</span> retainMap.put(regionStateNode.getRegionInfo(), regionStateNode.getRegionLocation());<a name="line.1701"></a> -<span class="sourceLineNo">1702</span> } else {<a name="line.1702"></a> -<span class="sourceLineNo">1703</span> hris.add(regionStateNode.getRegionInfo());<a name="line.1703"></a> -<span class="sourceLineNo">1704</span> }<a name="line.1704"></a> -<span class="sourceLineNo">1705</span> }<a name="line.1705"></a> -<span class="sourceLineNo">1706</span><a name="line.1706"></a> -<span class="sourceLineNo">1707</span> // TODO: connect with the listener to invalidate the cache<a name="line.1707"></a> -<span class="sourceLineNo">1708</span><a name="line.1708"></a> -<span class="sourceLineNo">1709</span> // TODO use events<a name="line.1709"></a> -<span class="sourceLineNo">1710</span> List<ServerName> servers = master.getServerManager().createDestinationServersList();<a name="line.1710"></a> -<span class="sourceLineNo">1711</span> for (int i = 0; servers.size() < 1; ++i) {<a name="line.1711"></a> -<span class="sourceLineNo">1712</span> // Report every fourth time around this loop; try not to flood log.<a name="line.1712"></a> -<span class="sourceLineNo">1713</span> if (i % 4 == 0) {<a name="line.1713"></a> -<span class="sourceLineNo">1714</span> LOG.warn("No servers available; cannot place " + regions.size() + " unassigned regions.");<a name="line.1714"></a> -<span class="sourceLineNo">1715</span> }<a 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getExcludedServersForSystemTable();<a name="line.1728"></a> -<span class="sourceLineNo">1729</span> List<ServerName> serversForSysTables = servers.stream()<a name="line.1729"></a> -<span class="sourceLineNo">1730</span> .filter(s -> !excludeServers.contains(s)).collect(Collectors.toList());<a name="line.1730"></a> -<span class="sourceLineNo">1731</span> if (serversForSysTables.isEmpty()) {<a name="line.1731"></a> -<span class="sourceLineNo">1732</span> LOG.warn("Filtering old server versions and the excluded produced an empty set; " +<a name="line.1732"></a> -<span class="sourceLineNo">1733</span> "instead considering all candidate servers!");<a name="line.1733"></a> -<span class="sourceLineNo">1734</span> }<a name="line.1734"></a> -<span class="sourceLineNo">1735</span> LOG.debug("Processing assignQueue; systemServersCount=" + serversForSysTables.size() +<a name="line.1735"></a> -<span class="sourceLineNo">1736</span> ", allServersCount=" + servers.size());<a name="line.1736"></a> 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Inside loadMeta, we keep trying. Can't make progress<a name="line.1214"></a> +<span class="sourceLineNo">1215</span> // w/o meta.<a name="line.1215"></a> +<span class="sourceLineNo">1216</span> loadMeta();<a name="line.1216"></a> +<span class="sourceLineNo">1217</span><a name="line.1217"></a> +<span class="sourceLineNo">1218</span> while (master.getServerManager().countOfRegionServers() < 1) {<a name="line.1218"></a> +<span class="sourceLineNo">1219</span> LOG.info("Waiting for RegionServers to join; current count={}",<a name="line.1219"></a> +<span class="sourceLineNo">1220</span> master.getServerManager().countOfRegionServers());<a name="line.1220"></a> +<span class="sourceLineNo">1221</span> Threads.sleep(250);<a name="line.1221"></a> +<span class="sourceLineNo">1222</span> }<a name="line.1222"></a> +<span class="sourceLineNo">1223</span> LOG.info("Number of RegionServers={}", master.getServerManager().countOfRegionServers());<a name="line.1223"></a> +<span class="sourceLineNo">1224</span><a name="line.1224"></a> +<span class="sourceLineNo">1225</span> processOfflineRegions();<a name="line.1225"></a> +<span class="sourceLineNo">1226</span><a name="line.1226"></a> +<span class="sourceLineNo">1227</span> // Start the RIT chore<a name="line.1227"></a> +<span class="sourceLineNo">1228</span> master.getMasterProcedureExecutor().addChore(this.ritChore);<a name="line.1228"></a> +<span class="sourceLineNo">1229</span><a name="line.1229"></a> +<span class="sourceLineNo">1230</span> long costMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime);<a name="line.1230"></a> +<span class="sourceLineNo">1231</span> LOG.info("Joined the cluster in {}", StringUtils.humanTimeDiff(costMs));<a name="line.1231"></a> +<span class="sourceLineNo">1232</span> }<a name="line.1232"></a> +<span class="sourceLineNo">1233</span><a name="line.1233"></a> +<span class="sourceLineNo">1234</span> // Create assign procedure for offline regions.<a name="line.1234"></a> +<span class="sourceLineNo">1235</span> // Just follow the old processofflineServersWithOnlineRegions method. Since now we do not need to<a name="line.1235"></a> +<span class="sourceLineNo">1236</span> // deal with dead server any more, we only deal with the regions in OFFLINE state in this method.<a name="line.1236"></a> +<span class="sourceLineNo">1237</span> // And this is a bit strange, that for new regions, we will add it in CLOSED state instead of<a name="line.1237"></a> +<span class="sourceLineNo">1238</span> // OFFLINE state, and usually there will be a procedure to track them. The<a name="line.1238"></a> +<span class="sourceLineNo">1239</span> // processofflineServersWithOnlineRegions is a legacy from long ago, as things are going really<a name="line.1239"></a> +<span class="sourceLineNo">1240</span> // different now, maybe we do not need this method any more. Need to revisit later.<a name="line.1240"></a> +<span class="sourceLineNo">1241</span> private void processOfflineRegions() {<a name="line.1241"></a> +<span class="sourceLineNo">1242</span> List<RegionInfo> offlineRegions = regionStates.getRegionStates().stream()<a name="line.1242"></a> +<span class="sourceLineNo">1243</span> .filter(RegionState::isOffline).filter(s -> isTableEnabled(s.getRegion().getTable()))<a name="line.1243"></a> +<span class="sourceLineNo">1244</span> .map(RegionState::getRegion).collect(Collectors.toList());<a name="line.1244"></a> +<span class="sourceLineNo">1245</span> if (!offlineRegions.isEmpty()) {<a name="line.1245"></a> +<span class="sourceLineNo">1246</span> master.getMasterProcedureExecutor().submitProcedures(<a name="line.1246"></a> +<span class="sourceLineNo">1247</span> master.getAssignmentManager().createRoundRobinAssignProcedures(offlineRegions));<a name="line.1247"></a> +<span class="sourceLineNo">1248</span> }<a name="line.1248"></a> +<span class="sourceLineNo">1249</span> }<a name="line.1249"></a> +<span class="sourceLineNo">1250</span><a name="line.1250"></a> +<span class="sourceLineNo">1251</span> private void loadMeta() throws IOException {<a name="line.1251"></a> +<span class="sourceLineNo">1252</span> // TODO: use a thread pool<a name="line.1252"></a> +<span class="sourceLineNo">1253</span> regionStateStore.visitMeta(new RegionStateStore.RegionStateVisitor() {<a name="line.1253"></a> +<span class="sourceLineNo">1254</span> @Override<a name="line.1254"></a> +<span class="sourceLineNo">1255</span> public void visitRegionState(Result result, final RegionInfo regionInfo, final State state,<a name="line.1255"></a> +<span class="sourceLineNo">1256</span> final ServerName regionLocation, final ServerName lastHost, final long openSeqNum) {<a name="line.1256"></a> +<span class="sourceLineNo">1257</span> if (state == null && regionLocation == null && lastHost == null &&<a name="line.1257"></a> +<span class="sourceLineNo">1258</span> openSeqNum == SequenceId.NO_SEQUENCE_ID) {<a name="line.1258"></a> +<span class="sourceLineNo">1259</span> // This is a row with nothing in it.<a name="line.1259"></a> +<span class="sourceLineNo">1260</span> LOG.warn("Skipping empty row={}", result);<a name="line.1260"></a> +<span class="sourceLineNo">1261</span> return;<a name="line.1261"></a> +<span class="sourceLineNo">1262</span> }<a name="line.1262"></a> +<span class="sourceLineNo">1263</span> State localState = state;<a name="line.1263"></a> +<span class="sourceLineNo">1264</span> if (localState == null) {<a name="line.1264"></a> +<span class="sourceLineNo">1265</span> // No region state column data in hbase:meta table! Are I doing a rolling upgrade from<a name="line.1265"></a> +<span class="sourceLineNo">1266</span> // hbase1 to hbase2? Am I restoring a SNAPSHOT or otherwise adding a region to hbase:meta?<a name="line.1266"></a> +<span class="sourceLineNo">1267</span> // In any of these cases, state is empty. For now, presume OFFLINE but there are probably<a name="line.1267"></a> +<span class="sourceLineNo">1268</span> // cases where we need to probe more to be sure this correct; TODO informed by experience.<a name="line.1268"></a> +<span class="sourceLineNo">1269</span> LOG.info(regionInfo.getEncodedName() + " regionState=null; presuming " + State.OFFLINE);<a name="line.1269"></a> +<span class="sourceLineNo">1270</span><a name="line.1270"></a> +<span class="sourceLineNo">1271</span> localState = State.OFFLINE;<a name="line.1271"></a> +<span class="sourceLineNo">1272</span> }<a name="line.1272"></a> +<span class="sourceLineNo">1273</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(regionInfo);<a name="line.1273"></a> +<span class="sourceLineNo">1274</span> // Do not need to lock on regionNode, as we can make sure that before we finish loading<a name="line.1274"></a> +<span class="sourceLineNo">1275</span> // meta, all the related procedures can not be executed. The only exception is formeta<a name="line.1275"></a> +<span class="sourceLineNo">1276</span> // region related operations, but here we do not load the informations for meta region.<a name="line.1276"></a> +<span class="sourceLineNo">1277</span> regionNode.setState(localState);<a name="line.1277"></a> +<span class="sourceLineNo">1278</span> regionNode.setLastHost(lastHost);<a name="line.1278"></a> +<span class="sourceLineNo">1279</span> regionNode.setRegionLocation(regionLocation);<a name="line.1279"></a> +<span class="sourceLineNo">1280</span> regionNode.setOpenSeqNum(openSeqNum);<a name="line.1280"></a> +<span class="sourceLineNo">1281</span><a name="line.1281"></a> +<span class="sourceLineNo">1282</span> if (localState == State.OPEN) {<a name="line.1282"></a> +<span class="sourceLineNo">1283</span> assert regionLocation != null : "found null region location for " + regionNode;<a name="line.1283"></a> +<span class="sourceLineNo">1284</span> regionStates.addRegionToServer(regionNode);<a name="line.1284"></a> +<span class="sourceLineNo">1285</span> } else if (localState == State.OFFLINE || regionInfo.isOffline()) {<a name="line.1285"></a> +<span class="sourceLineNo">1286</span> regionStates.addToOfflineRegions(regionNode);<a name="line.1286"></a> +<span class="sourceLineNo">1287</span> }<a name="line.1287"></a> +<span class="sourceLineNo">1288</span> }<a name="line.1288"></a> +<span class="sourceLineNo">1289</span> });<a name="line.1289"></a> +<span class="sourceLineNo">1290</span><a name="line.1290"></a> +<span class="sourceLineNo">1291</span> // every assignment is blocked until meta is loaded.<a name="line.1291"></a> +<span class="sourceLineNo">1292</span> wakeMetaLoadedEvent();<a name="line.1292"></a> +<span class="sourceLineNo">1293</span> }<a name="line.1293"></a> +<span class="sourceLineNo">1294</span><a name="line.1294"></a> +<span class="sourceLineNo">1295</span> /**<a name="line.1295"></a> +<span 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class="sourceLineNo">1305</span> }<a name="line.1305"></a> +<span class="sourceLineNo">1306</span> boolean meta = isMetaRegion(hri);<a name="line.1306"></a> +<span class="sourceLineNo">1307</span> boolean metaLoaded = isMetaLoaded();<a name="line.1307"></a> +<span class="sourceLineNo">1308</span> if (!meta && !metaLoaded) {<a name="line.1308"></a> +<span class="sourceLineNo">1309</span> throw new PleaseHoldException(<a name="line.1309"></a> +<span class="sourceLineNo">1310</span> "Master not fully online; hbase:meta=" + meta + ", metaLoaded=" + metaLoaded);<a name="line.1310"></a> +<span class="sourceLineNo">1311</span> }<a name="line.1311"></a> +<span class="sourceLineNo">1312</span> }<a name="line.1312"></a> +<span class="sourceLineNo">1313</span><a name="line.1313"></a> +<span class="sourceLineNo">1314</span> // ============================================================================================<a name="line.1314"></a> +<span class="sourceLineNo">1315</span> // TODO: Metrics<a name="line.1315"></a> +<span class="sourceLineNo">1316</span> // ============================================================================================<a name="line.1316"></a> +<span class="sourceLineNo">1317</span> public int getNumRegionsOpened() {<a name="line.1317"></a> +<span class="sourceLineNo">1318</span> // TODO: Used by TestRegionPlacement.java and assume monotonically increasing value<a name="line.1318"></a> +<span class="sourceLineNo">1319</span> return 0;<a name="line.1319"></a> +<span class="sourceLineNo">1320</span> }<a name="line.1320"></a> +<span class="sourceLineNo">1321</span><a name="line.1321"></a> +<span class="sourceLineNo">1322</span> public void submitServerCrash(final ServerName serverName, final boolean shouldSplitWal) {<a name="line.1322"></a> +<span class="sourceLineNo">1323</span> boolean carryingMeta = isCarryingMeta(serverName);<a name="line.1323"></a> +<span class="sourceLineNo">1324</span> ProcedureExecutor<MasterProcedureEnv> procExec = this.master.getMasterProcedureExecutor();<a name="line.1324"></a> +<span class="sourceLineNo">1325</span> procExec.submitProcedure(new ServerCrashProcedure(procExec.getEnvironment(), serverName,<a name="line.1325"></a> +<span class="sourceLineNo">1326</span> shouldSplitWal, carryingMeta));<a name="line.1326"></a> +<span class="sourceLineNo">1327</span> LOG.debug("Added=" + serverName +<a name="line.1327"></a> +<span class="sourceLineNo">1328</span> " to dead servers, submitted shutdown handler to be executed meta=" + carryingMeta);<a name="line.1328"></a> +<span class="sourceLineNo">1329</span> }<a name="line.1329"></a> +<span class="sourceLineNo">1330</span><a name="line.1330"></a> +<span class="sourceLineNo">1331</span> public void offlineRegion(final RegionInfo regionInfo) {<a name="line.1331"></a> +<span class="sourceLineNo">1332</span> // TODO used by MasterRpcServices<a name="line.1332"></a> +<span class="sourceLineNo">1333</span> RegionStateNode node = regionStates.getRegionStateNode(regionInfo);<a name="line.1333"></a> +<span class="sourceLineNo">1334</span> if (node != null) {<a name="line.1334"></a> +<span class="sourceLineNo">1335</span> node.offline();<a name="line.1335"></a> +<span class="sourceLineNo">1336</span> }<a name="line.1336"></a> +<span class="sourceLineNo">1337</span> }<a name="line.1337"></a> +<span class="sourceLineNo">1338</span><a name="line.1338"></a> +<span class="sourceLineNo">1339</span> public void onlineRegion(final RegionInfo regionInfo, final ServerName serverName) {<a name="line.1339"></a> +<span class="sourceLineNo">1340</span> // TODO used by TestSplitTransactionOnCluster.java<a name="line.1340"></a> +<span class="sourceLineNo">1341</span> }<a name="line.1341"></a> +<span class="sourceLineNo">1342</span><a name="line.1342"></a> +<span class="sourceLineNo">1343</span> public Map<ServerName, List<RegionInfo>> getSnapShotOfAssignment(<a name="line.1343"></a> +<span class="sourceLineNo">1344</span> final Collection<RegionInfo> regions) {<a name="line.1344"></a> +<span class="sourceLineNo">1345</span> return regionStates.getSnapShotOfAssignment(regions);<a name="line.1345"></a> +<span class="sourceLineNo">1346</span> }<a name="line.1346"></a> +<span class="sourceLineNo">1347</span><a name="line.1347"></a> +<span class="sourceLineNo">1348</span> // ============================================================================================<a name="line.1348"></a> +<span class="sourceLineNo">1349</span> // TODO: UTILS/HELPERS?<a name="line.1349"></a> +<span class="sourceLineNo">1350</span> // ============================================================================================<a name="line.1350"></a> +<span class="sourceLineNo">1351</span> /**<a name="line.1351"></a> +<span class="sourceLineNo">1352</span> * Used by the client (via master) to identify if all regions have the schema updates<a name="line.1352"></a> +<span class="sourceLineNo">1353</span> *<a name="line.1353"></a> +<span class="sourceLineNo">1354</span> * @param tableName<a name="line.1354"></a> +<span class="sourceLineNo">1355</span> * @return Pair indicating the status of the alter command (pending/total)<a name="line.1355"></a> +<span class="sourceLineNo">1356</span> * @throws IOException<a name="line.1356"></a> +<span class="sourceLineNo">1357</span> */<a name="line.1357"></a> +<span class="sourceLineNo">1358</span> public Pair<Integer, Integer> getReopenStatus(TableName tableName) {<a name="line.1358"></a> +<span class="sourceLineNo">1359</span> if (isTableDisabled(tableName)) return new Pair<Integer, Integer>(0, 0);<a name="line.1359"></a> +<span class="sourceLineNo">1360</span><a name="line.1360"></a> +<span class="sourceLineNo">1361</span> final List<RegionState> states = regionStates.getTableRegionStates(tableName);<a name="line.1361"></a> +<span class="sourceLineNo">1362</span> int ritCount = 0;<a name="line.1362"></a> +<span class="sourceLineNo">1363</span> for (RegionState regionState: states) {<a name="line.1363"></a> +<span class="sourceLineNo">1364</span> if (!regionState.isOpened()) ritCount++;<a name="line.1364"></a> +<span class="sourceLineNo">1365</span> }<a name="line.1365"></a> +<span class="sourceLineNo">1366</span> return new Pair<Integer, Integer>(ritCount, states.size());<a name="line.1366"></a> +<span class="sourceLineNo">1367</span> }<a name="line.1367"></a> +<span class="sourceLineNo">1368</span><a name="line.1368"></a> +<span class="sourceLineNo">1369</span> // ============================================================================================<a name="line.1369"></a> +<span class="sourceLineNo">1370</span> // TODO: Region State In Transition<a name="line.1370"></a> +<span class="sourceLineNo">1371</span> // ============================================================================================<a name="line.1371"></a> +<span class="sourceLineNo">1372</span> public boolean hasRegionsInTransition() {<a name="line.1372"></a> +<span class="sourceLineNo">1373</span> return regionStates.hasRegionsInTransition();<a name="line.1373"></a> +<span class="sourceLineNo">1374</span> }<a name="line.1374"></a> +<span class="sourceLineNo">1375</span><a name="line.1375"></a> +<span class="sourceLineNo">1376</span> public List<RegionStateNode> getRegionsInTransition() {<a name="line.1376"></a> +<span class="sourceLineNo">1377</span> return regionStates.getRegionsInTransition();<a name="line.1377"></a> +<span class="sourceLineNo">1378</span> }<a name="line.1378"></a> +<span class="sourceLineNo">1379</span><a name="line.1379"></a> +<span class="sourceLineNo">1380</span> public List<RegionInfo> getAssignedRegions() {<a name="line.1380"></a> +<span class="sourceLineNo">1381</span> return regionStates.getAssignedRegions();<a name="line.1381"></a> +<span class="sourceLineNo">1382</span> }<a name="line.1382"></a> +<span class="sourceLineNo">1383</span><a name="line.1383"></a> +<span class="sourceLineNo">1384</span> public RegionInfo getRegionInfo(final byte[] regionName) {<a name="line.1384"></a> +<span class="sourceLineNo">1385</span> final RegionStateNode regionState = regionStates.getRegionStateNodeFromName(regionName);<a name="line.1385"></a> +<span class="sourceLineNo">1386</span> return regionState != null ? regionState.getRegionInfo() : null;<a name="line.1386"></a> +<span class="sourceLineNo">1387</span> }<a name="line.1387"></a> +<span class="sourceLineNo">1388</span><a name="line.1388"></a> +<span class="sourceLineNo">1389</span> // ============================================================================================<a name="line.1389"></a> +<span class="sourceLineNo">1390</span> // Expected states on region state transition.<a name="line.1390"></a> +<span class="sourceLineNo">1391</span> // Notice that there is expected states for transiting to OPENING state, this is because SCP.<a name="line.1391"></a> +<span class="sourceLineNo">1392</
<TRUNCATED>
