http://git-wip-us.apache.org/repos/asf/hbase-site/blob/aa3fb87f/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html index e763690..f66043c 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html @@ -1301,610 +1301,613 @@ <span class="sourceLineNo">1293</span> }<a name="line.1293"></a> <span class="sourceLineNo">1294</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(regionInfo);<a name="line.1294"></a> <span class="sourceLineNo">1295</span> // Do not need to lock on regionNode, as we can make sure that before we finish loading<a name="line.1295"></a> -<span class="sourceLineNo">1296</span> // meta, all the related procedures can not be executed. The only exception is formeta<a name="line.1296"></a> +<span class="sourceLineNo">1296</span> // meta, all the related procedures can not be executed. The only exception is for meta<a name="line.1296"></a> <span class="sourceLineNo">1297</span> // region related operations, but here we do not load the informations for meta region.<a name="line.1297"></a> <span class="sourceLineNo">1298</span> regionNode.setState(localState);<a name="line.1298"></a> <span class="sourceLineNo">1299</span> regionNode.setLastHost(lastHost);<a name="line.1299"></a> <span class="sourceLineNo">1300</span> regionNode.setRegionLocation(regionLocation);<a name="line.1300"></a> <span class="sourceLineNo">1301</span> regionNode.setOpenSeqNum(openSeqNum);<a name="line.1301"></a> <span class="sourceLineNo">1302</span><a name="line.1302"></a> -<span class="sourceLineNo">1303</span> if (localState == State.OPEN) {<a name="line.1303"></a> -<span class="sourceLineNo">1304</span> assert regionLocation != null : "found null region location for " + regionNode;<a name="line.1304"></a> -<span class="sourceLineNo">1305</span> regionStates.addRegionToServer(regionNode);<a name="line.1305"></a> -<span class="sourceLineNo">1306</span> } else if (localState == State.OFFLINE || regionInfo.isOffline()) {<a name="line.1306"></a> -<span class="sourceLineNo">1307</span> regionStates.addToOfflineRegions(regionNode);<a name="line.1307"></a> -<span class="sourceLineNo">1308</span> }<a name="line.1308"></a> -<span class="sourceLineNo">1309</span> }<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> // every assignment is blocked until meta is loaded.<a name="line.1312"></a> -<span class="sourceLineNo">1313</span> wakeMetaLoadedEvent();<a name="line.1313"></a> -<span class="sourceLineNo">1314</span> }<a name="line.1314"></a> -<span class="sourceLineNo">1315</span><a name="line.1315"></a> -<span class="sourceLineNo">1316</span> /**<a name="line.1316"></a> -<span class="sourceLineNo">1317</span> * Used to check if the meta loading is done.<a name="line.1317"></a> -<span class="sourceLineNo">1318</span> * <p/><a name="line.1318"></a> -<span class="sourceLineNo">1319</span> * if not we throw PleaseHoldException since we are rebuilding the RegionStates<a name="line.1319"></a> -<span class="sourceLineNo">1320</span> * @param hri region to check if it is already rebuild<a name="line.1320"></a> -<span class="sourceLineNo">1321</span> * @throws PleaseHoldException if meta has not been loaded yet<a name="line.1321"></a> -<span class="sourceLineNo">1322</span> */<a name="line.1322"></a> -<span class="sourceLineNo">1323</span> private void checkMetaLoaded(RegionInfo hri) throws PleaseHoldException {<a name="line.1323"></a> -<span class="sourceLineNo">1324</span> if (!isRunning()) {<a name="line.1324"></a> -<span class="sourceLineNo">1325</span> throw new PleaseHoldException("AssignmentManager not running");<a name="line.1325"></a> -<span class="sourceLineNo">1326</span> }<a name="line.1326"></a> -<span class="sourceLineNo">1327</span> boolean meta = isMetaRegion(hri);<a name="line.1327"></a> -<span class="sourceLineNo">1328</span> boolean metaLoaded = isMetaLoaded();<a name="line.1328"></a> -<span class="sourceLineNo">1329</span> if (!meta && !metaLoaded) {<a name="line.1329"></a> -<span class="sourceLineNo">1330</span> throw new PleaseHoldException(<a name="line.1330"></a> -<span class="sourceLineNo">1331</span> "Master not fully online; hbase:meta=" + meta + ", metaLoaded=" + metaLoaded);<a name="line.1331"></a> -<span class="sourceLineNo">1332</span> }<a name="line.1332"></a> -<span class="sourceLineNo">1333</span> }<a name="line.1333"></a> -<span class="sourceLineNo">1334</span><a name="line.1334"></a> -<span class="sourceLineNo">1335</span> // ============================================================================================<a name="line.1335"></a> -<span class="sourceLineNo">1336</span> // TODO: Metrics<a name="line.1336"></a> -<span class="sourceLineNo">1337</span> // ============================================================================================<a name="line.1337"></a> -<span class="sourceLineNo">1338</span> public int getNumRegionsOpened() {<a name="line.1338"></a> -<span class="sourceLineNo">1339</span> // TODO: Used by TestRegionPlacement.java and assume monotonically increasing value<a name="line.1339"></a> -<span class="sourceLineNo">1340</span> return 0;<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 long submitServerCrash(ServerName serverName, boolean shouldSplitWal) {<a name="line.1343"></a> -<span class="sourceLineNo">1344</span> boolean carryingMeta;<a name="line.1344"></a> -<span class="sourceLineNo">1345</span> long pid;<a name="line.1345"></a> -<span class="sourceLineNo">1346</span> ServerStateNode serverNode = regionStates.getServerNode(serverName);<a name="line.1346"></a> -<span class="sourceLineNo">1347</span> if(serverNode == null){<a name="line.1347"></a> -<span class="sourceLineNo">1348</span> LOG.info("Skip to add SCP for {} since this server should be OFFLINE already", serverName);<a name="line.1348"></a> -<span class="sourceLineNo">1349</span> return -1;<a name="line.1349"></a> -<span class="sourceLineNo">1350</span> }<a name="line.1350"></a> -<span class="sourceLineNo">1351</span> // we hold the write lock here for fencing on reportRegionStateTransition. Once we set the<a name="line.1351"></a> -<span class="sourceLineNo">1352</span> // server state to CRASHED, we will no longer accept the reportRegionStateTransition call from<a name="line.1352"></a> -<span class="sourceLineNo">1353</span> // this server. This is used to simplify the implementation for TRSP and SCP, where we can make<a name="line.1353"></a> -<span class="sourceLineNo">1354</span> // sure that, the region list fetched by SCP will not be changed any more.<a name="line.1354"></a> -<span class="sourceLineNo">1355</span> serverNode.writeLock().lock();<a name="line.1355"></a> -<span class="sourceLineNo">1356</span> try {<a name="line.1356"></a> -<span class="sourceLineNo">1357</span> ProcedureExecutor<MasterProcedureEnv> procExec = this.master.getMasterProcedureExecutor();<a name="line.1357"></a> -<span class="sourceLineNo">1358</span> carryingMeta = isCarryingMeta(serverName);<a name="line.1358"></a> -<span class="sourceLineNo">1359</span> if (!serverNode.isInState(ServerState.ONLINE)) {<a name="line.1359"></a> -<span class="sourceLineNo">1360</span> LOG.info(<a name="line.1360"></a> -<span class="sourceLineNo">1361</span> "Skip to add SCP for {} with meta= {}, " +<a name="line.1361"></a> -<span class="sourceLineNo">1362</span> "since there should be a SCP is processing or already done for this server node",<a name="line.1362"></a> -<span class="sourceLineNo">1363</span> serverName, carryingMeta);<a name="line.1363"></a> -<span class="sourceLineNo">1364</span> return -1;<a name="line.1364"></a> -<span class="sourceLineNo">1365</span> } else {<a name="line.1365"></a> -<span class="sourceLineNo">1366</span> serverNode.setState(ServerState.CRASHED);<a name="line.1366"></a> -<span class="sourceLineNo">1367</span> pid = procExec.submitProcedure(new ServerCrashProcedure(procExec.getEnvironment(),<a name="line.1367"></a> -<span class="sourceLineNo">1368</span> serverName, shouldSplitWal, carryingMeta));<a name="line.1368"></a> -<span class="sourceLineNo">1369</span> LOG.info(<a name="line.1369"></a> -<span class="sourceLineNo">1370</span> "Added {} to dead servers which carryingMeta={}, submitted ServerCrashProcedure pid={}",<a name="line.1370"></a> -<span class="sourceLineNo">1371</span> serverName, carryingMeta, pid);<a name="line.1371"></a> -<span class="sourceLineNo">1372</span> }<a name="line.1372"></a> -<span class="sourceLineNo">1373</span> } finally {<a name="line.1373"></a> -<span class="sourceLineNo">1374</span> serverNode.writeLock().unlock();<a name="line.1374"></a> -<span class="sourceLineNo">1375</span> }<a name="line.1375"></a> -<span class="sourceLineNo">1376</span> return pid;<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 void offlineRegion(final RegionInfo regionInfo) {<a name="line.1379"></a> -<span class="sourceLineNo">1380</span> // TODO used by MasterRpcServices<a name="line.1380"></a> -<span class="sourceLineNo">1381</span> RegionStateNode node = regionStates.getRegionStateNode(regionInfo);<a name="line.1381"></a> -<span class="sourceLineNo">1382</span> if (node != null) {<a name="line.1382"></a> -<span class="sourceLineNo">1383</span> node.offline();<a name="line.1383"></a> -<span class="sourceLineNo">1384</span> }<a name="line.1384"></a> -<span class="sourceLineNo">1385</span> }<a name="line.1385"></a> -<span class="sourceLineNo">1386</span><a name="line.1386"></a> -<span class="sourceLineNo">1387</span> public void onlineRegion(final RegionInfo regionInfo, final ServerName serverName) {<a name="line.1387"></a> -<span class="sourceLineNo">1388</span> // TODO used by TestSplitTransactionOnCluster.java<a name="line.1388"></a> -<span class="sourceLineNo">1389</span> }<a name="line.1389"></a> -<span class="sourceLineNo">1390</span><a name="line.1390"></a> -<span class="sourceLineNo">1391</span> public Map<ServerName, List<RegionInfo>> getSnapShotOfAssignment(<a name="line.1391"></a> -<span class="sourceLineNo">1392</span> final Collection<RegionInfo> regions) {<a name="line.1392"></a> -<span class="sourceLineNo">1393</span> return regionStates.getSnapShotOfAssignment(regions);<a name="line.1393"></a> -<span class="sourceLineNo">1394</span> }<a name="line.1394"></a> -<span class="sourceLineNo">1395</span><a name="line.1395"></a> -<span class="sourceLineNo">1396</span> // ============================================================================================<a name="line.1396"></a> -<span class="sourceLineNo">1397</span> // TODO: UTILS/HELPERS?<a name="line.1397"></a> -<span class="sourceLineNo">1398</span> // ============================================================================================<a name="line.1398"></a> -<span class="sourceLineNo">1399</span> /**<a name="line.1399"></a> -<span class="sourceLineNo">1400</span> * Used by the client (via master) to identify if all regions have the schema updates<a name="line.1400"></a> -<span class="sourceLineNo">1401</span> *<a name="line.1401"></a> -<span class="sourceLineNo">1402</span> * @param tableName<a name="line.1402"></a> -<span class="sourceLineNo">1403</span> * @return Pair indicating the status of the alter command (pending/total)<a name="line.1403"></a> -<span class="sourceLineNo">1404</span> * @throws IOException<a name="line.1404"></a> -<span class="sourceLineNo">1405</span> */<a name="line.1405"></a> -<span class="sourceLineNo">1406</span> public Pair<Integer, Integer> getReopenStatus(TableName tableName) {<a name="line.1406"></a> -<span class="sourceLineNo">1407</span> if (isTableDisabled(tableName)) return new Pair<Integer, Integer>(0, 0);<a name="line.1407"></a> -<span class="sourceLineNo">1408</span><a name="line.1408"></a> -<span class="sourceLineNo">1409</span> final List<RegionState> states = regionStates.getTableRegionStates(tableName);<a name="line.1409"></a> -<span class="sourceLineNo">1410</span> int ritCount = 0;<a name="line.1410"></a> -<span class="sourceLineNo">1411</span> for (RegionState regionState: states) {<a name="line.1411"></a> -<span class="sourceLineNo">1412</span> if (!regionState.isOpened()) ritCount++;<a name="line.1412"></a> -<span class="sourceLineNo">1413</span> }<a name="line.1413"></a> -<span class="sourceLineNo">1414</span> return new Pair<Integer, Integer>(ritCount, states.size());<a name="line.1414"></a> -<span class="sourceLineNo">1415</span> }<a name="line.1415"></a> -<span class="sourceLineNo">1416</span><a name="line.1416"></a> -<span class="sourceLineNo">1417</span> // ============================================================================================<a name="line.1417"></a> -<span class="sourceLineNo">1418</span> // TODO: Region State In Transition<a name="line.1418"></a> -<span class="sourceLineNo">1419</span> // ============================================================================================<a name="line.1419"></a> -<span class="sourceLineNo">1420</span> public boolean hasRegionsInTransition() {<a name="line.1420"></a> -<span class="sourceLineNo">1421</span> return regionStates.hasRegionsInTransition();<a name="line.1421"></a> -<span class="sourceLineNo">1422</span> }<a name="line.1422"></a> -<span class="sourceLineNo">1423</span><a name="line.1423"></a> -<span class="sourceLineNo">1424</span> public List<RegionStateNode> getRegionsInTransition() {<a name="line.1424"></a> -<span class="sourceLineNo">1425</span> return regionStates.getRegionsInTransition();<a name="line.1425"></a> -<span class="sourceLineNo">1426</span> }<a name="line.1426"></a> -<span class="sourceLineNo">1427</span><a name="line.1427"></a> -<span class="sourceLineNo">1428</span> public List<RegionInfo> getAssignedRegions() {<a name="line.1428"></a> -<span class="sourceLineNo">1429</span> return regionStates.getAssignedRegions();<a name="line.1429"></a> -<span class="sourceLineNo">1430</span> }<a name="line.1430"></a> -<span class="sourceLineNo">1431</span><a name="line.1431"></a> -<span class="sourceLineNo">1432</span> public RegionInfo getRegionInfo(final byte[] regionName) {<a name="line.1432"></a> -<span class="sourceLineNo">1433</span> final RegionStateNode regionState = regionStates.getRegionStateNodeFromName(regionName);<a name="line.1433"></a> -<span class="sourceLineNo">1434</span> return regionState != null ? regionState.getRegionInfo() : null;<a name="line.1434"></a> -<span class="sourceLineNo">1435</span> }<a name="line.1435"></a> -<span class="sourceLineNo">1436</span><a name="line.1436"></a> -<span class="sourceLineNo">1437</span> // ============================================================================================<a name="line.1437"></a> -<span class="sourceLineNo">1438</span> // Expected states on region state transition.<a name="line.1438"></a> -<span class="sourceLineNo">1439</span> // Notice that there is expected states for transiting to OPENING state, this is because SCP.<a name="line.1439"></a> -<span class="sourceLineNo">1440</span> // See the comments in regionOpening method for more details.<a name="line.1440"></a> -<span class="sourceLineNo">1441</span> // ============================================================================================<a name="line.1441"></a> -<span class="sourceLineNo">1442</span> private static final State[] STATES_EXPECTED_ON_OPEN = {<a name="line.1442"></a> -<span class="sourceLineNo">1443</span> State.OPENING, // Normal case<a name="line.1443"></a> -<span class="sourceLineNo">1444</span> State.OPEN // Retrying<a name="line.1444"></a> -<span class="sourceLineNo">1445</span> };<a name="line.1445"></a> -<span class="sourceLineNo">1446</span><a name="line.1446"></a> -<span class="sourceLineNo">1447</span> private static final State[] STATES_EXPECTED_ON_CLOSING = {<a name="line.1447"></a> -<span class="sourceLineNo">1448</span> State.OPEN, // Normal case<a name="line.1448"></a> -<span class="sourceLineNo">1449</span> State.CLOSING, // Retrying<a name="line.1449"></a> -<span class="sourceLineNo">1450</span> State.SPLITTING, // Offline the split parent<a name="line.1450"></a> -<span class="sourceLineNo">1451</span> State.MERGING // Offline the merge parents<a name="line.1451"></a> -<span class="sourceLineNo">1452</span> };<a name="line.1452"></a> -<span class="sourceLineNo">1453</span><a name="line.1453"></a> -<span class="sourceLineNo">1454</span> private static final State[] STATES_EXPECTED_ON_CLOSED = {<a name="line.1454"></a> -<span class="sourceLineNo">1455</span> State.CLOSING, // Normal case<a name="line.1455"></a> -<span class="sourceLineNo">1456</span> State.CLOSED // Retrying<a name="line.1456"></a> -<span class="sourceLineNo">1457</span> };<a name="line.1457"></a> -<span class="sourceLineNo">1458</span><a name="line.1458"></a> -<span class="sourceLineNo">1459</span> // This is for manually scheduled region assign, can add other states later if we find out other<a name="line.1459"></a> -<span class="sourceLineNo">1460</span> // usages<a name="line.1460"></a> -<span class="sourceLineNo">1461</span> private static final State[] STATES_EXPECTED_ON_ASSIGN = { State.CLOSED, State.OFFLINE };<a name="line.1461"></a> -<span class="sourceLineNo">1462</span><a name="line.1462"></a> -<span class="sourceLineNo">1463</span> // We only allow unassign or move a region which is in OPEN state.<a name="line.1463"></a> -<span class="sourceLineNo">1464</span> private static final State[] STATES_EXPECTED_ON_UNASSIGN_OR_MOVE = { State.OPEN };<a name="line.1464"></a> +<span class="sourceLineNo">1303</span> // Note: keep consistent with other methods, see region(Opening|Opened|Closing)<a name="line.1303"></a> +<span class="sourceLineNo">1304</span> // RIT/ServerCrash handling should take care of the transiting regions.<a name="line.1304"></a> +<span class="sourceLineNo">1305</span> if (localState.matches(State.OPEN, State.OPENING, State.CLOSING, State.SPLITTING,<a name="line.1305"></a> +<span class="sourceLineNo">1306</span> State.MERGING)) {<a name="line.1306"></a> +<span class="sourceLineNo">1307</span> assert regionLocation != null : "found null region location for " + regionNode;<a name="line.1307"></a> +<span class="sourceLineNo">1308</span> regionStates.addRegionToServer(regionNode);<a name="line.1308"></a> +<span class="sourceLineNo">1309</span> } else if (localState == State.OFFLINE || regionInfo.isOffline()) {<a name="line.1309"></a> +<span class="sourceLineNo">1310</span> regionStates.addToOfflineRegions(regionNode);<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> // every assignment is blocked until meta is loaded.<a name="line.1315"></a> +<span class="sourceLineNo">1316</span> wakeMetaLoadedEvent();<a name="line.1316"></a> +<span class="sourceLineNo">1317</span> }<a name="line.1317"></a> +<span class="sourceLineNo">1318</span><a name="line.1318"></a> +<span class="sourceLineNo">1319</span> /**<a name="line.1319"></a> +<span class="sourceLineNo">1320</span> * Used to check if the meta loading is done.<a name="line.1320"></a> +<span class="sourceLineNo">1321</span> * <p/><a name="line.1321"></a> +<span class="sourceLineNo">1322</span> * if not we throw PleaseHoldException since we are rebuilding the RegionStates<a name="line.1322"></a> +<span class="sourceLineNo">1323</span> * @param hri region to check if it is already rebuild<a name="line.1323"></a> +<span class="sourceLineNo">1324</span> * @throws PleaseHoldException if meta has not been loaded yet<a name="line.1324"></a> +<span class="sourceLineNo">1325</span> */<a name="line.1325"></a> +<span class="sourceLineNo">1326</span> private void checkMetaLoaded(RegionInfo hri) throws PleaseHoldException {<a name="line.1326"></a> +<span class="sourceLineNo">1327</span> if (!isRunning()) {<a name="line.1327"></a> +<span class="sourceLineNo">1328</span> throw new PleaseHoldException("AssignmentManager not running");<a name="line.1328"></a> +<span class="sourceLineNo">1329</span> }<a name="line.1329"></a> +<span class="sourceLineNo">1330</span> boolean meta = isMetaRegion(hri);<a name="line.1330"></a> +<span class="sourceLineNo">1331</span> boolean metaLoaded = isMetaLoaded();<a name="line.1331"></a> +<span class="sourceLineNo">1332</span> if (!meta && !metaLoaded) {<a name="line.1332"></a> +<span class="sourceLineNo">1333</span> throw new PleaseHoldException(<a name="line.1333"></a> +<span class="sourceLineNo">1334</span> "Master not fully online; hbase:meta=" + meta + ", metaLoaded=" + metaLoaded);<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> // ============================================================================================<a name="line.1338"></a> +<span class="sourceLineNo">1339</span> // TODO: Metrics<a name="line.1339"></a> +<span class="sourceLineNo">1340</span> // ============================================================================================<a name="line.1340"></a> +<span class="sourceLineNo">1341</span> public int getNumRegionsOpened() {<a name="line.1341"></a> +<span class="sourceLineNo">1342</span> // TODO: Used by TestRegionPlacement.java and assume monotonically increasing value<a name="line.1342"></a> +<span class="sourceLineNo">1343</span> return 0;<a name="line.1343"></a> +<span class="sourceLineNo">1344</span> }<a name="line.1344"></a> +<span class="sourceLineNo">1345</span><a name="line.1345"></a> +<span class="sourceLineNo">1346</span> public long submitServerCrash(ServerName serverName, boolean shouldSplitWal) {<a name="line.1346"></a> +<span class="sourceLineNo">1347</span> boolean carryingMeta;<a name="line.1347"></a> +<span class="sourceLineNo">1348</span> long pid;<a name="line.1348"></a> +<span class="sourceLineNo">1349</span> ServerStateNode serverNode = regionStates.getServerNode(serverName);<a name="line.1349"></a> +<span class="sourceLineNo">1350</span> if(serverNode == null){<a name="line.1350"></a> +<span class="sourceLineNo">1351</span> LOG.info("Skip to add SCP for {} since this server should be OFFLINE already", serverName);<a name="line.1351"></a> +<span class="sourceLineNo">1352</span> return -1;<a name="line.1352"></a> +<span class="sourceLineNo">1353</span> }<a name="line.1353"></a> +<span class="sourceLineNo">1354</span> // we hold the write lock here for fencing on reportRegionStateTransition. Once we set the<a name="line.1354"></a> +<span class="sourceLineNo">1355</span> // server state to CRASHED, we will no longer accept the reportRegionStateTransition call from<a name="line.1355"></a> +<span class="sourceLineNo">1356</span> // this server. This is used to simplify the implementation for TRSP and SCP, where we can make<a name="line.1356"></a> +<span class="sourceLineNo">1357</span> // sure that, the region list fetched by SCP will not be changed any more.<a name="line.1357"></a> +<span class="sourceLineNo">1358</span> serverNode.writeLock().lock();<a name="line.1358"></a> +<span class="sourceLineNo">1359</span> try {<a name="line.1359"></a> +<span class="sourceLineNo">1360</span> ProcedureExecutor<MasterProcedureEnv> procExec = this.master.getMasterProcedureExecutor();<a name="line.1360"></a> +<span class="sourceLineNo">1361</span> carryingMeta = isCarryingMeta(serverName);<a name="line.1361"></a> +<span class="sourceLineNo">1362</span> if (!serverNode.isInState(ServerState.ONLINE)) {<a name="line.1362"></a> +<span class="sourceLineNo">1363</span> LOG.info(<a name="line.1363"></a> +<span class="sourceLineNo">1364</span> "Skip to add SCP for {} with meta= {}, " +<a name="line.1364"></a> +<span class="sourceLineNo">1365</span> "since there should be a SCP is processing or already done for this server node",<a name="line.1365"></a> +<span class="sourceLineNo">1366</span> serverName, carryingMeta);<a name="line.1366"></a> +<span class="sourceLineNo">1367</span> return -1;<a name="line.1367"></a> +<span class="sourceLineNo">1368</span> } else {<a name="line.1368"></a> +<span class="sourceLineNo">1369</span> serverNode.setState(ServerState.CRASHED);<a name="line.1369"></a> +<span class="sourceLineNo">1370</span> pid = procExec.submitProcedure(new ServerCrashProcedure(procExec.getEnvironment(),<a name="line.1370"></a> +<span class="sourceLineNo">1371</span> serverName, shouldSplitWal, carryingMeta));<a name="line.1371"></a> +<span class="sourceLineNo">1372</span> LOG.info(<a name="line.1372"></a> +<span class="sourceLineNo">1373</span> "Added {} to dead servers which carryingMeta={}, submitted ServerCrashProcedure pid={}",<a name="line.1373"></a> +<span class="sourceLineNo">1374</span> serverName, carryingMeta, pid);<a name="line.1374"></a> +<span class="sourceLineNo">1375</span> }<a name="line.1375"></a> +<span class="sourceLineNo">1376</span> } finally {<a name="line.1376"></a> +<span class="sourceLineNo">1377</span> serverNode.writeLock().unlock();<a name="line.1377"></a> +<span class="sourceLineNo">1378</span> }<a name="line.1378"></a> +<span class="sourceLineNo">1379</span> return pid;<a name="line.1379"></a> +<span class="sourceLineNo">1380</span> }<a name="line.1380"></a> +<span class="sourceLineNo">1381</span><a name="line.1381"></a> +<span class="sourceLineNo">1382</span> public void offlineRegion(final RegionInfo regionInfo) {<a name="line.1382"></a> +<span class="sourceLineNo">1383</span> // TODO used by MasterRpcServices<a name="line.1383"></a> +<span class="sourceLineNo">1384</span> RegionStateNode node = regionStates.getRegionStateNode(regionInfo);<a name="line.1384"></a> +<span class="sourceLineNo">1385</span> if (node != null) {<a name="line.1385"></a> +<span class="sourceLineNo">1386</span> node.offline();<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> public void onlineRegion(final RegionInfo regionInfo, final ServerName serverName) {<a name="line.1390"></a> +<span class="sourceLineNo">1391</span> // TODO used by TestSplitTransactionOnCluster.java<a name="line.1391"></a> +<span class="sourceLineNo">1392</span> }<a name="line.1392"></a> +<span class="sourceLineNo">1393</span><a name="line.1393"></a> +<span class="sourceLineNo">1394</span> public Map<ServerName, List<RegionInfo>> getSnapShotOfAssignment(<a name="line.1394"></a> +<span class="sourceLineNo">1395</span> final Collection<RegionInfo> regions) {<a name="line.1395"></a> +<span class="sourceLineNo">1396</span> return regionStates.getSnapShotOfAssignment(regions);<a name="line.1396"></a> +<span class="sourceLineNo">1397</span> }<a name="line.1397"></a> +<span class="sourceLineNo">1398</span><a name="line.1398"></a> +<span class="sourceLineNo">1399</span> // ============================================================================================<a name="line.1399"></a> +<span class="sourceLineNo">1400</span> // TODO: UTILS/HELPERS?<a name="line.1400"></a> +<span class="sourceLineNo">1401</span> // ============================================================================================<a name="line.1401"></a> +<span class="sourceLineNo">1402</span> /**<a name="line.1402"></a> +<span class="sourceLineNo">1403</span> * Used by the client (via master) to identify if all regions have the schema updates<a name="line.1403"></a> +<span class="sourceLineNo">1404</span> *<a name="line.1404"></a> +<span class="sourceLineNo">1405</span> * @param tableName<a name="line.1405"></a> +<span class="sourceLineNo">1406</span> * @return Pair indicating the status of the alter command (pending/total)<a name="line.1406"></a> +<span class="sourceLineNo">1407</span> * @throws IOException<a name="line.1407"></a> +<span class="sourceLineNo">1408</span> */<a name="line.1408"></a> +<span class="sourceLineNo">1409</span> public Pair<Integer, Integer> getReopenStatus(TableName tableName) {<a name="line.1409"></a> +<span class="sourceLineNo">1410</span> if (isTableDisabled(tableName)) return new Pair<Integer, Integer>(0, 0);<a name="line.1410"></a> +<span class="sourceLineNo">1411</span><a name="line.1411"></a> +<span class="sourceLineNo">1412</span> final List<RegionState> states = regionStates.getTableRegionStates(tableName);<a name="line.1412"></a> +<span class="sourceLineNo">1413</span> int ritCount = 0;<a name="line.1413"></a> +<span class="sourceLineNo">1414</span> for (RegionState regionState: states) {<a name="line.1414"></a> +<span class="sourceLineNo">1415</span> if (!regionState.isOpened()) ritCount++;<a name="line.1415"></a> +<span class="sourceLineNo">1416</span> }<a name="line.1416"></a> +<span class="sourceLineNo">1417</span> return new Pair<Integer, Integer>(ritCount, states.size());<a name="line.1417"></a> +<span class="sourceLineNo">1418</span> }<a name="line.1418"></a> +<span class="sourceLineNo">1419</span><a name="line.1419"></a> +<span class="sourceLineNo">1420</span> // ============================================================================================<a name="line.1420"></a> +<span class="sourceLineNo">1421</span> // TODO: Region State In Transition<a name="line.1421"></a> +<span class="sourceLineNo">1422</span> // ============================================================================================<a name="line.1422"></a> +<span class="sourceLineNo">1423</span> public boolean hasRegionsInTransition() {<a name="line.1423"></a> +<span class="sourceLineNo">1424</span> return regionStates.hasRegionsInTransition();<a name="line.1424"></a> +<span class="sourceLineNo">1425</span> }<a name="line.1425"></a> +<span class="sourceLineNo">1426</span><a name="line.1426"></a> +<span class="sourceLineNo">1427</span> public List<RegionStateNode> getRegionsInTransition() {<a name="line.1427"></a> +<span class="sourceLineNo">1428</span> return regionStates.getRegionsInTransition();<a name="line.1428"></a> +<span class="sourceLineNo">1429</span> }<a name="line.1429"></a> +<span class="sourceLineNo">1430</span><a name="line.1430"></a> +<span class="sourceLineNo">1431</span> public List<RegionInfo> getAssignedRegions() {<a name="line.1431"></a> +<span class="sourceLineNo">1432</span> return regionStates.getAssignedRegions();<a name="line.1432"></a> +<span class="sourceLineNo">1433</span> }<a name="line.1433"></a> +<span class="sourceLineNo">1434</span><a name="line.1434"></a> +<span class="sourceLineNo">1435</span> public RegionInfo getRegionInfo(final byte[] regionName) {<a name="line.1435"></a> +<span class="sourceLineNo">1436</span> final RegionStateNode regionState = regionStates.getRegionStateNodeFromName(regionName);<a name="line.1436"></a> +<span class="sourceLineNo">1437</span> return regionState != null ? regionState.getRegionInfo() : null;<a name="line.1437"></a> +<span class="sourceLineNo">1438</span> }<a name="line.1438"></a> +<span class="sourceLineNo">1439</span><a name="line.1439"></a> +<span class="sourceLineNo">1440</span> // ============================================================================================<a name="line.1440"></a> +<span class="sourceLineNo">1441</span> // Expected states on region state transition.<a name="line.1441"></a> +<span class="sourceLineNo">1442</span> // Notice that there is expected states for transiting to OPENING state, this is because SCP.<a name="line.1442"></a> +<span class="sourceLineNo">1443</span> // See the comments in regionOpening method for more details.<a name="line.1443"></a> +<span class="sourceLineNo">1444</span> // ============================================================================================<a name="line.1444"></a> +<span class="sourceLineNo">1445</span> private static final State[] STATES_EXPECTED_ON_OPEN = {<a name="line.1445"></a> +<span class="sourceLineNo">1446</span> State.OPENING, // Normal case<a name="line.1446"></a> +<span class="sourceLineNo">1447</span> State.OPEN // Retrying<a name="line.1447"></a> +<span class="sourceLineNo">1448</span> };<a name="line.1448"></a> +<span class="sourceLineNo">1449</span><a name="line.1449"></a> +<span class="sourceLineNo">1450</span> private static final State[] STATES_EXPECTED_ON_CLOSING = {<a name="line.1450"></a> +<span class="sourceLineNo">1451</span> State.OPEN, // Normal case<a name="line.1451"></a> +<span class="sourceLineNo">1452</span> State.CLOSING, // Retrying<a name="line.1452"></a> +<span class="sourceLineNo">1453</span> State.SPLITTING, // Offline the split parent<a name="line.1453"></a> +<span class="sourceLineNo">1454</span> State.MERGING // Offline the merge parents<a name="line.1454"></a> +<span class="sourceLineNo">1455</span> };<a name="line.1455"></a> +<span class="sourceLineNo">1456</span><a name="line.1456"></a> +<span class="sourceLineNo">1457</span> private static final State[] STATES_EXPECTED_ON_CLOSED = {<a name="line.1457"></a> +<span class="sourceLineNo">1458</span> State.CLOSING, // Normal case<a name="line.1458"></a> +<span class="sourceLineNo">1459</span> State.CLOSED // Retrying<a name="line.1459"></a> +<span class="sourceLineNo">1460</span> };<a name="line.1460"></a> +<span class="sourceLineNo">1461</span><a name="line.1461"></a> +<span class="sourceLineNo">1462</span> // This is for manually scheduled region assign, can add other states later if we find out other<a name="line.1462"></a> +<span class="sourceLineNo">1463</span> // usages<a name="line.1463"></a> +<span class="sourceLineNo">1464</span> private static final State[] STATES_EXPECTED_ON_ASSIGN = { State.CLOSED, State.OFFLINE };<a name="line.1464"></a> <span class="sourceLineNo">1465</span><a name="line.1465"></a> -<span class="sourceLineNo">1466</span> // ============================================================================================<a name="line.1466"></a> -<span class="sourceLineNo">1467</span> // Region Status update<a name="line.1467"></a> -<span class="sourceLineNo">1468</span> // Should only be called in TransitRegionStateProcedure<a name="line.1468"></a> +<span class="sourceLineNo">1466</span> // We only allow unassign or move a region which is in OPEN state.<a name="line.1466"></a> +<span class="sourceLineNo">1467</span> private static final State[] STATES_EXPECTED_ON_UNASSIGN_OR_MOVE = { State.OPEN };<a name="line.1467"></a> +<span class="sourceLineNo">1468</span><a name="line.1468"></a> <span class="sourceLineNo">1469</span> // ============================================================================================<a name="line.1469"></a> -<span class="sourceLineNo">1470</span> private void transitStateAndUpdate(RegionStateNode regionNode, RegionState.State newState,<a name="line.1470"></a> -<span class="sourceLineNo">1471</span> RegionState.State... expectedStates) throws IOException {<a name="line.1471"></a> -<span class="sourceLineNo">1472</span> RegionState.State state = regionNode.getState();<a name="line.1472"></a> -<span class="sourceLineNo">1473</span> regionNode.transitionState(newState, expectedStates);<a name="line.1473"></a> -<span class="sourceLineNo">1474</span> boolean succ = false;<a name="line.1474"></a> -<span class="sourceLineNo">1475</span> try {<a name="line.1475"></a> -<span class="sourceLineNo">1476</span> regionStateStore.updateRegionLocation(regionNode);<a name="line.1476"></a> -<span class="sourceLineNo">1477</span> succ = true;<a name="line.1477"></a> -<span class="sourceLineNo">1478</span> } finally {<a name="line.1478"></a> -<span class="sourceLineNo">1479</span> if (!succ) {<a name="line.1479"></a> -<span class="sourceLineNo">1480</span> // revert<a name="line.1480"></a> -<span class="sourceLineNo">1481</span> regionNode.setState(state);<a name="line.1481"></a> -<span class="sourceLineNo">1482</span> }<a name="line.1482"></a> -<span class="sourceLineNo">1483</span> }<a name="line.1483"></a> -<span class="sourceLineNo">1484</span> }<a name="line.1484"></a> -<span class="sourceLineNo">1485</span><a name="line.1485"></a> -<span class="sourceLineNo">1486</span> // should be called within the synchronized block of RegionStateNode<a name="line.1486"></a> -<span class="sourceLineNo">1487</span> void regionOpening(RegionStateNode regionNode) throws IOException {<a name="line.1487"></a> -<span class="sourceLineNo">1488</span> // As in SCP, for performance reason, there is no TRSP attached with this region, we will not<a name="line.1488"></a> -<span class="sourceLineNo">1489</span> // update the region state, which means that the region could be in any state when we want to<a name="line.1489"></a> -<span class="sourceLineNo">1490</span> // assign it after a RS crash. So here we do not pass the expectedStates parameter.<a name="line.1490"></a> -<span class="sourceLineNo">1491</span> transitStateAndUpdate(regionNode, State.OPENING);<a name="line.1491"></a> -<span class="sourceLineNo">1492</span> regionStates.addRegionToServer(regionNode);<a name="line.1492"></a> -<span class="sourceLineNo">1493</span> // update the operation count metrics<a name="line.1493"></a> -<span class="sourceLineNo">1494</span> metrics.incrementOperationCounter();<a name="line.1494"></a> -<span class="sourceLineNo">1495</span> }<a name="line.1495"></a> -<span class="sourceLineNo">1496</span><a name="line.1496"></a> -<span class="sourceLineNo">1497</span> // should be called within the synchronized block of RegionStateNode.<a name="line.1497"></a> -<span class="sourceLineNo">1498</span> // The parameter 'giveUp' means whether we will try to open the region again, if it is true, then<a name="line.1498"></a> -<span class="sourceLineNo">1499</span> // we will persist the FAILED_OPEN state into hbase:meta.<a name="line.1499"></a> -<span class="sourceLineNo">1500</span> void regionFailedOpen(RegionStateNode regionNode, boolean giveUp) throws IOException {<a name="line.1500"></a> -<span class="sourceLineNo">1501</span> RegionState.State state = regionNode.getState();<a name="line.1501"></a> -<span class="sourceLineNo">1502</span> ServerName regionLocation = regionNode.getRegionLocation();<a name="line.1502"></a> -<span class="sourceLineNo">1503</span> if (giveUp) {<a name="line.1503"></a> -<span class="sourceLineNo">1504</span> regionNode.setState(State.FAILED_OPEN);<a name="line.1504"></a> -<span class="sourceLineNo">1505</span> regionNode.setRegionLocation(null);<a name="line.1505"></a> -<span class="sourceLineNo">1506</span> boolean succ = false;<a name="line.1506"></a> -<span class="sourceLineNo">1507</span> try {<a name="line.1507"></a> -<span class="sourceLineNo">1508</span> regionStateStore.updateRegionLocation(regionNode);<a name="line.1508"></a> -<span class="sourceLineNo">1509</span> succ = true;<a name="line.1509"></a> -<span class="sourceLineNo">1510</span> } finally {<a name="line.1510"></a> -<span class="sourceLineNo">1511</span> if (!succ) {<a name="line.1511"></a> -<span class="sourceLineNo">1512</span> // revert<a name="line.1512"></a> -<span class="sourceLineNo">1513</span> regionNode.setState(state);<a name="line.1513"></a> -<span class="sourceLineNo">1514</span> regionNode.setRegionLocation(regionLocation);<a name="line.1514"></a> -<span class="sourceLineNo">1515</span> }<a name="line.1515"></a> -<span class="sourceLineNo">1516</span> }<a name="line.1516"></a> -<span class="sourceLineNo">1517</span> }<a name="line.1517"></a> -<span class="sourceLineNo">1518</span> if (regionLocation != null) {<a name="line.1518"></a> -<span class="sourceLineNo">1519</span> regionStates.removeRegionFromServer(regionLocation, regionNode);<a name="line.1519"></a> +<span class="sourceLineNo">1470</span> // Region Status update<a name="line.1470"></a> +<span class="sourceLineNo">1471</span> // Should only be called in TransitRegionStateProcedure<a name="line.1471"></a> +<span class="sourceLineNo">1472</span> // ============================================================================================<a name="line.1472"></a> +<span class="sourceLineNo">1473</span> private void transitStateAndUpdate(RegionStateNode regionNode, RegionState.State newState,<a name="line.1473"></a> +<span class="sourceLineNo">1474</span> RegionState.State... expectedStates) throws IOException {<a name="line.1474"></a> +<span class="sourceLineNo">1475</span> RegionState.State state = regionNode.getState();<a name="line.1475"></a> +<span class="sourceLineNo">1476</span> regionNode.transitionState(newState, expectedStates);<a name="line.1476"></a> +<span class="sourceLineNo">1477</span> boolean succ = false;<a name="line.1477"></a> +<span class="sourceLineNo">1478</span> try {<a name="line.1478"></a> +<span class="sourceLineNo">1479</span> regionStateStore.updateRegionLocation(regionNode);<a name="line.1479"></a> +<span class="sourceLineNo">1480</span> succ = true;<a name="line.1480"></a> +<span class="sourceLineNo">1481</span> } finally {<a name="line.1481"></a> +<span class="sourceLineNo">1482</span> if (!succ) {<a name="line.1482"></a> +<span class="sourceLineNo">1483</span> // revert<a name="line.1483"></a> +<span class="sourceLineNo">1484</span> regionNode.setState(state);<a name="line.1484"></a> +<span class="sourceLineNo">1485</span> }<a name="line.1485"></a> +<span class="sourceLineNo">1486</span> }<a name="line.1486"></a> +<span class="sourceLineNo">1487</span> }<a name="line.1487"></a> +<span class="sourceLineNo">1488</span><a name="line.1488"></a> +<span class="sourceLineNo">1489</span> // should be called within the synchronized block of RegionStateNode<a name="line.1489"></a> +<span class="sourceLineNo">1490</span> void regionOpening(RegionStateNode regionNode) throws IOException {<a name="line.1490"></a> +<span class="sourceLineNo">1491</span> // As in SCP, for performance reason, there is no TRSP attached with this region, we will not<a name="line.1491"></a> +<span class="sourceLineNo">1492</span> // update the region state, which means that the region could be in any state when we want to<a name="line.1492"></a> +<span class="sourceLineNo">1493</span> // assign it after a RS crash. So here we do not pass the expectedStates parameter.<a name="line.1493"></a> +<span class="sourceLineNo">1494</span> transitStateAndUpdate(regionNode, State.OPENING);<a name="line.1494"></a> +<span class="sourceLineNo">1495</span> regionStates.addRegionToServer(regionNode);<a name="line.1495"></a> +<span class="sourceLineNo">1496</span> // update the operation count metrics<a name="line.1496"></a> +<span class="sourceLineNo">1497</span> metrics.incrementOperationCounter();<a name="line.1497"></a> +<span class="sourceLineNo">1498</span> }<a name="line.1498"></a> +<span class="sourceLineNo">1499</span><a name="line.1499"></a> +<span class="sourceLineNo">1500</span> // should be called within the synchronized block of RegionStateNode.<a name="line.1500"></a> +<span class="sourceLineNo">1501</span> // The parameter 'giveUp' means whether we will try to open the region again, if it is true, then<a name="line.1501"></a> +<span class="sourceLineNo">1502</span> // we will persist the FAILED_OPEN state into hbase:meta.<a name="line.1502"></a> +<span class="sourceLineNo">1503</span> void regionFailedOpen(RegionStateNode regionNode, boolean giveUp) throws IOException {<a name="line.1503"></a> +<span class="sourceLineNo">1504</span> RegionState.State state = regionNode.getState();<a name="line.1504"></a> +<span class="sourceLineNo">1505</span> ServerName regionLocation = regionNode.getRegionLocation();<a name="line.1505"></a> +<span class="sourceLineNo">1506</span> if (giveUp) {<a name="line.1506"></a> +<span class="sourceLineNo">1507</span> regionNode.setState(State.FAILED_OPEN);<a name="line.1507"></a> +<span class="sourceLineNo">1508</span> regionNode.setRegionLocation(null);<a name="line.1508"></a> +<span class="sourceLineNo">1509</span> boolean succ = false;<a name="line.1509"></a> +<span class="sourceLineNo">1510</span> try {<a name="line.1510"></a> +<span class="sourceLineNo">1511</span> regionStateStore.updateRegionLocation(regionNode);<a name="line.1511"></a> +<span class="sourceLineNo">1512</span> succ = true;<a name="line.1512"></a> +<span class="sourceLineNo">1513</span> } finally {<a name="line.1513"></a> +<span class="sourceLineNo">1514</span> if (!succ) {<a name="line.1514"></a> +<span class="sourceLineNo">1515</span> // revert<a name="line.1515"></a> +<span class="sourceLineNo">1516</span> regionNode.setState(state);<a name="line.1516"></a> +<span class="sourceLineNo">1517</span> regionNode.setRegionLocation(regionLocation);<a name="line.1517"></a> +<span class="sourceLineNo">1518</span> }<a name="line.1518"></a> +<span class="sourceLineNo">1519</span> }<a name="line.1519"></a> <span class="sourceLineNo">1520</span> }<a name="line.1520"></a> -<span class="sourceLineNo">1521</span> }<a name="line.1521"></a> -<span class="sourceLineNo">1522</span><a name="line.1522"></a> -<span class="sourceLineNo">1523</span> // should be called within the synchronized block of RegionStateNode<a name="line.1523"></a> -<span class="sourceLineNo">1524</span> void regionOpened(RegionStateNode regionNode) throws IOException {<a name="line.1524"></a> -<span class="sourceLineNo">1525</span> // TODO: OPENING Updates hbase:meta too... we need to do both here and there?<a name="line.1525"></a> -<span class="sourceLineNo">1526</span> // That is a lot of hbase:meta writing.<a name="line.1526"></a> -<span class="sourceLineNo">1527</span> transitStateAndUpdate(regionNode, State.OPEN, STATES_EXPECTED_ON_OPEN);<a name="line.1527"></a> -<span class="sourceLineNo">1528</span> RegionInfo hri = regionNode.getRegionInfo();<a name="line.1528"></a> -<span class="sourceLineNo">1529</span> if (isMetaRegion(hri)) {<a name="line.1529"></a> -<span class="sourceLineNo">1530</span> // Usually we'd set a table ENABLED at this stage but hbase:meta is ALWAYs enabled, it<a name="line.1530"></a> -<span class="sourceLineNo">1531</span> // can't be disabled -- so skip the RPC (besides... enabled is managed by TableStateManager<a name="line.1531"></a> -<span class="sourceLineNo">1532</span> // which is backed by hbase:meta... 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Thread.currentThread().interrupt();<a name="line.1724"></a> -<span class="sourceLineNo">1725</span> } finally {<a name="line.1725"></a> -<span class="sourceLineNo">1726</span> assignQueueLock.unlock();<a name="line.1726"></a> -<span class="sourceLineNo">1727</span> }<a name="line.1727"></a> -<span class="sourceLineNo">1728</span> return regions;<a name="line.1728"></a> -<span class="sourceLineNo">1729</span> }<a name="line.1729"></a> -<span class="sourceLineNo">1730</span><a name="line.1730"></a> -<span class="sourceLineNo">1731</span> private void processAssignQueue() {<a name="line.1731"></a> -<span class="sourceLineNo">1732</span> final HashMap<RegionInfo, RegionStateNode> regions = waitOnAssignQueue();<a name="line.1732"></a> -<span class="sourceLineNo">1733</span> if (regions == null || regions.size() == 0 || !isRunning()) {<a name="line.1733"></a> -<span class="sourceLineNo">1734</span> return;<a name="line.1734"></a> -<span class="sourceLineNo">1735</span> }<a name="line.1735"></a> -<span class="sourceLineNo">1736</span><a name="line.1736"></a> -<span class="sourceLineNo">1737</span> if (LOG.isTraceEnabled()) {<a name="line.1737"></a> -<span class="sourceLineNo">1738</span> LOG.trace("PROCESS ASSIGN QUEUE regionCount=" + regions.size());<a name="line.1738"></a> -<span class="sourceLineNo">1739</span> }<a name="line.1739"></a> -<span class="sourceLineNo">1740</span><a name="line.1740"></a> -<span class="sourceLineNo">1741</span> // TODO: Optimize balancer. pass a RegionPlan?<a name="line.1741"></a> -<span class="sourceLineNo">1742</span> final HashMap<RegionInfo, ServerName> retainMap = new HashMap<>();<a name="line.1742"></a> -<span class="sourceLineNo">1743</span> final List<RegionInfo> userHRIs = new ArrayList<>(regions.size());<a name="line.1743"></a> -<span class="sourceLineNo">1744</span> // Regions for system tables requiring reassignment<a name="line.1744"></a> -<span class="sourceLineNo">1745</span> final List<RegionInfo> systemHRIs = new ArrayList<>();<a name="line.1745"></a> -<span class="sourceLineNo">1746</span> for (RegionStateNode regionStateNode: regions.values()) {<a name="line.1746"></a> -<span class="sourceLineNo">1747</span> boolean sysTable = regionStateNode.isSystemTable();<a name="line.1747"></a> -<span class="sourceLineNo">1748</span> final List<RegionInfo> hris = sysTable? systemHRIs: userHRIs;<a name="line.1748"></a> -<span class="sourceLineNo">1749</span> if (regionStateNode.getRegionLocation() != null) {<a name="line.1749"></a> -<span class="sourceLineNo">1750</span> retainMap.put(regionStateNode.getRegionInfo(), regionStateNode.getRegionLocation());<a name="line.1750"></a> -<span class="sourceLineNo">1751</span> } else {<a name="line.1751"></a> -<span class="sourceLineNo">1752</span> hris.add(regionStateNode.getRegionInfo());<a name="line.1752"></a> -<span class="sourceLineNo">1753</span> }<a name="line.1753"></a> -<span class="sourceLineNo">1754</span> }<a name="line.1754"></a> -<span class="sourceLineNo">1755</span><a name="line.1755"></a> -<span class="sourceLineNo">1756</span> // TODO: connect with the listener to invalidate the cache<a name="line.1756"></a> -<span class="sourceLineNo">1757</span><a name="line.1757"></a> -<span class="sourceLineNo">1758</span> // TODO use events<a name="line.1758"></a> -<span class="sourceLineNo">1759</span> List<ServerName> servers = master.getServerManager().createDestinationServersList();<a name="line.1759"></a> -<span class="sourceLineNo">1760</span> for (int i = 0; servers.size() < 1; ++i) {<a name="line.1760"></a> -<span class="sourceLineNo">1761</span> // Report every fourth time around this loop; try not to flood log.<a name="line.1761"></a> -<span class="sourceLineNo">1762</span> if (i % 4 == 0) {<a name="line.1762"></a> -<span class="sourceLineNo">1763</span> LOG.warn("No servers available; cannot place " + regions.size() + " unassigned regions.");<a name="line.1763"></a> -<span class="sourceLineNo">1764</span> }<a 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Dropping assign of " + regions.size() + " queued regions.");<a name="line.1767"></a> -<span class="sourceLineNo">1768</span> return;<a name="line.1768"></a> -<span class="sourceLineNo">1769</span> }<a name="line.1769"></a> -<span class="sourceLineNo">1770</span> Threads.sleep(250);<a name="line.1770"></a> -<span class="sourceLineNo">1771</span> servers = master.getServerManager().createDestinationServersList();<a name="line.1771"></a> -<span class="sourceLineNo">1772</span> }<a name="line.1772"></a> -<span class="sourceLineNo">1773</span><a name="line.1773"></a> -<span class="sourceLineNo">1774</span> if (!systemHRIs.isEmpty()) {<a name="line.1774"></a> -<span class="sourceLineNo">1775</span> // System table regions requiring reassignment are present, get region servers<a name="line.1775"></a> -<span class="sourceLineNo">1776</span> // not available for system table regions<a name="line.1776"></a> -<span class="sourceLineNo">1777</span> final List<ServerName> excludeServers = getExcludedServersForSystemTable();<a name="line.1777"></a> -<span class="sourceLineNo">1778</span> List<ServerName> serversForSysTables = servers.stream()<a name="line.1778"></a> -<span class="sourceLineNo">1779</span> .filter(s -> !excludeServers.contains(s)).collect(Collectors.toList());<a name="line.1779"></a> -<span class="sourceLineNo">1780</span> if (serversForSysTables.isEmpty()) {<a name="line.1780"></a> -<span class="sourceLineNo">1781</span> LOG.warn("Filtering old server versions and the excluded produced an empty set; " +<a name="line.1781"></a> -<span class="sourceLineNo">1782</span> "instead considering all candidate servers!");<a name="line.1782"></a> -<span class="sourceLineNo">1783</span> }<a name="line.1783"></a> -<span class="sourceLineNo">1784</span> LOG.debug("Processing assignQueue; systemServersCount=" + serversForSysTables.size() +<a name="line.1784"></a> -<span class="sourceLineNo">1785</span> ", allServersCount=" + servers.size());<a name="line.1785"></a> -<span class="sourceLineNo">1786</span> processAssignmentPlans(regions, null, systemHRIs,<a name="line.1786"></a> -<span class="sourceLineNo">1787</span> serversForSysTables.isEmpty()? servers: serversForSysTables);<a name="line.1787"></a> -<span class="sourceLineNo">1788</span> }<a name="line.1788"></a> -<span class="sourceLineNo">1789</span><a name="line.1789"></a> -<span class="sourceLineNo">1790</span> processAssignmentPlans(regions, retainMap, userHRIs, servers);<a name="line.1790"></a> -<span class="sourceLineNo">1791</span> }<a name="line.1791"></a> +<span class="sourceLineNo">1521</span> if (regionLocation != null) {<a name="line.1521"></a> +<span class="sourceLineNo">1522</span> regionStates.removeRegionFromServer(regionLocation, regionNode);<a name="line.1522"></a> +<span class="sourceLineNo">1523</span> }<a name="line.1523"></a> +<span class="sourceLineNo">1524</span> }<a name="line.1524"></a> +<span class="sourceLineNo">1525</span><a name="line.1525"></a> +<span class="sourceLineNo">1526</span> // should be called within the synchronized block of RegionStateNode<a name="line.1526"></a> +<span class="sourceLineNo">1527</span> void regionOpened(RegionStateNode regionNode) throws IOException {<a name="line.1527"></a> +<span class="sourceLineNo">1528</span> // TODO: OPENING Updates hbase:meta too... we need to do both here and there?<a name="line.1528"></a> +<span class="sourceLineNo">1529</span> // That is a lot of hbase:meta writing.<a name="line.1529"></a> +<span class="sourceLineNo">1530</span> transitStateAndUpdate(regionNode, State.OPEN, STATES_EXPECTED_ON_OPEN);<a name="line.1530"></a> +<span class="sourceLineNo">1531</span> RegionInfo hri = regionNode.getRegionInfo();<a name="line.1531"></a> +<span class="sourceLineNo">1532</span> if (isMetaRegion(hri)) {<a name="line.1532"></a> +<span class="sourceLineNo">1533</span> // Usually we'd set a table ENABLED at this stage but hbase:meta is ALWAYs enabled, it<a name="line.1533"></a> +<span class="sourceLineNo">1534</span> // can't be disabled -- so skip the RPC (besides... enabled is managed by TableStateManager<a name="line.1534"></a> +<span class="sourceLineNo">1535</span> // which is backed by hbase:meta... Avoid setting ENABLED to avoid having to update state<a name="line.1535"></a> +<span class="sourceLineNo">1536</span> // on table that contains state.<a name="line.1536"></a> +<span class="sourceLineNo">1537</span> setMetaAssigned(hri, true);<a name="line.1537"></a> +<span class="sourceLineNo">1538</span> }<a name="line.1538"></a> +<span class="sourceLineNo">1539</span> regionStates.addRegionToServer(regionNode);<a name="line.1539"></a> +<span class="sourceLineNo">1540</span> regionStates.removeFromFailedOpen(hri);<a name="line.1540"></a> +<span class="sourceLineNo">1541</span> }<a name="line.1541"></a> +<span class="sourceLineNo">1542</span><a name="line.1542"></a> +<span class="sourceLineNo">1543</span> // should be called within the synchronized block of RegionStateNode<a name="line.1543"></a> +<span class="sourceLineNo">1544</span> void regionClosing(RegionStateNode regionNode) throws IOException {<a name="line.1544"></a> +<span class="sourceLineNo">1545</span> transitStateAndUpdate(regionNode, State.CLOSING, STATES_EXPECTED_ON_CLOSING);<a name="line.1545"></a> +<span class="sourceLineNo">1546</span><a name="line.1546"></a> +<span class="sourceLineNo">1547</span> RegionInfo hri = regionNode.getRegionInfo();<a name="line.1547"></a> +<span class="sourceLineNo">1548</span> // Set meta has not initialized early. so people trying to create/edit tables will wait<a name="line.1548"></a> +<span class="sourceLineNo">1549</span> if (isMetaRegion(hri)) {<a name="line.1549"></a> +<span class="sourceLineNo">1550</span> setMetaAssigned(hri, false);<a name="line.1550"></a> +<span class="sourceLineNo">1551</span> }<a name="line.1551"></a> +<span class="sourceLineNo">1552</span> regionStates.addRegionToServer(regionNode);<a name="line.1552"></a> +<span class="sourceLineNo">1553</span> // update the operation count metrics<a name="line.1553"></a> +<span class="sourceLineNo">1554</span> metrics.incrementOperationCounter();<a name="line.1554"></a> +<span class="sourceLineNo">1555</span> }<a name="line.1555"></a> +<span class="sourceLineNo">1556</span><a name="line.1556"></a> +<span class="sourceLineNo">1557</span> // should be called within the synchronized block of RegionStateNode<a name="line.1557"></a> +<span class="sourceLineNo">1558</span> // The parameter 'normally' means whether we are closed cleanly, if it is true, then it means that<a name="line.1558"></a> +<span class="sourceLineNo">1559</span> // we are closed due to a RS crash.<a name="line.1559"></a> +<span class="sourceLineNo">1560</span> void regionClosed(RegionStateNode regionNode, boolean normally) throws IOException {<a name="line.1560"></a> +<span class="sourceLineNo">1561</span> RegionState.State state = regionNode.getState();<a name="line.1561"></a> +<span class="sourceLineNo">1562</span> ServerName regionLocation = regionNode.getRegionLocation();<a name="line.1562"></a> +<span class="sourceLineNo">1563</span> if (normally) {<a name="line.1563"></a> +<span class="sourceLineNo">1564</span> regionNode.transitionState(State.CLOSED, STATES_EXPECTED_ON_CLOSED);<a name="line.1564"></a> +<span class="sourceLineNo">1565</span> } else {<a name="line.1565"></a> +<span class="sourceLineNo">1566</span> // For SCP<a name="line.1566"></a> +<span class="sourceLineNo">1567</span> regionNode.transitionState(State.ABNORMALLY_CLOSED);<a name="line.1567"></a> +<span class="sourceLineNo">1568</span> }<a name="line.1568"></a> +<span class="sourceLineNo">1569</span> regionNode.setRegionLocation(null);<a name="line.1569"></a> +<span class="sourceLineNo">1570</span> boolean succ = false;<a name="line.1570"></a> +<span class="sourceLineNo">1571</span> try {<a name="line.1571"></a> +<span class="sourceLineNo">1572</span> regionStateStore.updateRegionLocation(regionNode);<a name="line.1572"></a> +<span class="sourceLineNo">1573</span> succ = true;<a name="line.1573"></a> +<span class="sourceLineNo">1574</span> } finally {<a name="line.1574"></a> +<span class="sourceLineNo">1575</span> if (!succ) {<a name="line.1575"></a> +<span class="sourceLineNo">1576</span> // revert<a name="line.1576"></a> +<span class="sourceLineNo">1577</span> regionNode.setState(state);<a name="line.1577"></a> +<span class="sourceLineNo">1578</span> regionNode.setRegionLocation(regionLocation);<a name="line.1578"></a> +<span class="sourceLineNo">1579</span> }<a name="line.1579"></a> +<span class="sourceLineNo">1580</span> }<a name="line.1580"></a> +<span class="sourceLineNo">1581</span> if (regionLocation != null) {<a name="line.1581"></a> +<span class="sourceLineNo">1582</span> regionNode.setLastHost(regionLocation);<a name="line.1582"></a> +<span class="sourceLineNo">1583</span> regionStates.removeRegionFromServer(regionLocation, regionNode);<a name="line.1583"></a> +<span class="sourceLineNo">1584</span> }<a name="line.1584"></a> +<span class="sourceLineNo">1585</span> }<a name="line.1585"></a> +<span class="sourceLineNo">1586</span><a name="line.1586"></a> +<span class="sourceLineNo">1587</span> public void markRegionAsSplit(final RegionInfo parent, final ServerName serverName,<a name="line.1587"></a> +<span class="sourceLineNo">1588</span> final RegionInfo daughterA, final RegionInfo daughterB) throws IOException {<a name="line.1588"></a> +<span class="sourceLineNo">1589</span> // Update hbase:meta. Parent will be marked offline and split up in hbase:meta.<a name="line.1589"></a> +<span class="sourceLineNo">1590</span> // The parent stays in regionStates until cleared when removed by CatalogJanitor.<a name="line.1590"></a> +<span class="sourceLineNo">1591</span> // Update its state in regionStates to it shows as offline and split when read<a name="line.1591"></a> +<span class="sourceLineNo">1592</span> // later figuring what regions are in a table and what are not: see<a name="line.1592"></a> +<span class="sourceLineNo">1593</span> // regionStates#getRegionsOfTable<a name="line.1593"></a> +<span class="sourceLineNo">1594</span> final RegionStateNode node = regionStates.getOrCreateRegionStateNode(parent);<a name="line.1594"></a> +<span class="sourceLineNo">1595</span> node.setState(State.SPLIT);<a name="line.1595"></a> +<span class="sourceLineNo">1596</span> final RegionStateNode nodeA = regionStates.getOrCreateRegionStateNode(daughterA);<a name="line.1596"></a> +<span class="sourceLineNo">1597</span> nodeA.setState(State.SPLITTING_NEW);<a name="line.1597"></a> +<span class="sourceLineNo">1598</span> final RegionStateNode nodeB = regionStates.getOrCreateRegionStateNode(daughterB);<a name="line.1598"></a> +<span class="sourceLineNo">1599</span> nodeB.setState(State.SPLITTING_NEW);<a name="line.1599"></a> +<span class="sourceLineNo">1600</span><a name="line.1600"></a> +<span class="sourceLineNo">1601</span> regionStateStore.splitRegion(parent, daughterA, daughterB, serverName);<a name="line.1601"></a> +<span class="sourceLineNo">1602</span> if (shouldAssignFavoredNodes(parent)) {<a name="line.1602"></a> +<span class="sourceLineNo">1603</span> List<ServerName> onlineServers = this.master.getServerManager().getOnlineServersList();<a name="line.1603"></a> +<span class="sourceLineNo">1604</span> ((FavoredNodesPromoter)getBalancer()).<a name="line.1604"></a> +<span class="sourceLineNo">1605</span> generateFavoredNodesForDaughter(onlineServers, parent, daughterA, daughterB);<a name="line.1605"></a> +<span class="sourceLineNo">1606</span> }<a name="line.1606"></a> +<span class="sourceLineNo">1607</span> }<a name="line.1607"></a> +<span class="sourceLineNo">1608</span><a name="line.1608"></a> +<span class="sourceLineNo">1609</span> /**<a name="line.1609"></a> +<span class="sourceLineNo">1610</span> * When called here, the merge has happened. The two merged regions have been<a name="line.1610"></a> +<span class="sourceLineNo">1611</span> * unassigned and the above markRegionClosed has been called on each so they have been<a name="line.1611"></a> +<span class="sourceLineNo">1612</span> * disassociated from a hosting Server. The merged region will be open after this call. The<a name="line.1612"></a> +<span class="sourceLineNo">1613</span> * merged regions are removed from hbase:meta below> Later they are deleted from the filesystem<a name="line.1613"></a> +<span class="sourceLineNo">1614</span> * by the catalog janitor running against hbase:meta. It notices when the merged region no<a name="line.1614"></a> +<span class="sourceLineNo">1615</span> * longer holds references to the old regions.<a name="line.1615"></a> +<span class="sourceLineNo">1616</span> */<a name="line.1616"></a> +<span class="sourceLineNo">1617</span> public void markRegionAsMerged(final RegionInfo child, final ServerName serverName,<a name="line.1617"></a> +<span class="sourceLineNo">1618</span> final RegionInfo mother, final RegionInfo father) throws IOException {<a name="line.1618"></a> +<span class="sourceLineNo">1619</span> final RegionStateNode node = regionStates.getOrCreateRegionStateNode(child);<a name="line.1619"></a> +<span class="sourceLineNo">1620</span> node.setState(State.MERGED);<a name="line.1620"></a> +<span class="sourceLineNo">1621</span> regionStates.deleteRegion(mother);<a name="line.1621"></a> +<span class="sourceLineNo">1622</span> regionStates.deleteRegion(father);<a name="line.1622"></a> +<span class="sourceLineNo">1623</span> regionStateStore.mergeRegions(child, mother, father, serverName);<a name="line.1623"></a> +<span class="sourceLineNo">1624</span> if (shouldAssignFavoredNodes(child)) {<a name="line.1624"></a> +<span class="sourceLineNo">1625</span> ((FavoredNodesPromoter)getBalancer()).<a name="line.1625"></a> +<span class="sourceLineNo">1626</span> generateFavoredNodesForMergedRegion(child, mother, father);<a name="line.1626"></a> +<span class="sourceLineNo">1627</span> }<a name="line.1627"></a> +<span class="sourceLineNo">1628</span> }<a name="line.1628"></a> +<span class="sourceLineNo">1629</span><a name="line.1629"></a> +<span class="sourceLineNo">1630</span> /*<a name="line.1630"></a> +<span class="sourceLineNo">1631</span> * Favored nodes should be applied only when FavoredNodes balancer is configured and the region<a name="line.1631"></a> +<span class="sourceLineNo">1632</span> * belongs to a non-system table.<a name="line.1632"></a> +<span class="sourceLineNo">1633</span> */<a name="line.1633"></a> +<span class="sourceLineNo">1634</span> private boolean shouldAssignFavoredNodes(RegionInfo region) {<a name="line.1634"></a> +<span class="sourceLineNo">1635</span> return this.shouldAssignRegionsWithFavoredNodes &&<a name="line.1635"></a> +<span class="sourceLineNo">1636</span> FavoredNodesManager.isFavoredNodeApplicable(region);<a name="line.1636"></a> +<span class="sourceLineNo">1637</span> }<a name="line.1637"></a> +<span class="sourceLineNo">1638</span><a name="line.1638"></a> +<span class="sourceLineNo">1639</span> // ============================================================================================<a name="line.1639"></a> +<span class="sourceLineNo">1640</span> // Assign Queue (Assign/Balance)<a name="line.1640"></a> +<span class="sourceLineNo">1641</span> // ============================================================================================<a name="line.1641"></a> +<span class="sourceLineNo">1642</span> private final ArrayList<RegionStateNode> pendingAssignQueue = new ArrayList<RegionStateNode>();<a name="line.1642"></a> +<span class="sourceLineNo">1643</span> private final ReentrantLock assignQueueLock = new ReentrantLock();<a name="line.1643"></a> +<span class="sourceLineNo">1644</span> private final Condition assignQueueFullCond = assignQueueLock.newCondition();<a name="line.1644"></a> +<span class="sourceLineNo">1645</span><a name="line.1645"></a> +<span class="sourceLineNo">1646</span> /**<a name="line.1646"></a> +<span class="sourceLineNo">1647</span>
<TRUNCATED>
