Java Code Examples for org.apache.hadoop.ha.HAServiceProtocol.HAServiceState#INITIALIZING
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org.apache.hadoop.ha.HAServiceProtocol.HAServiceState#INITIALIZING .
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Example 1
Source File: MiniZKFCCluster.java From hadoop with Apache License 2.0 | 6 votes |
public MiniZKFCCluster(Configuration conf, ZooKeeperServer zks) { this.conf = conf; // Fast check interval so tests run faster conf.setInt(CommonConfigurationKeys.HA_HM_CHECK_INTERVAL_KEY, 50); conf.setInt(CommonConfigurationKeys.HA_HM_CONNECT_RETRY_INTERVAL_KEY, 50); conf.setInt(CommonConfigurationKeys.HA_HM_SLEEP_AFTER_DISCONNECT_KEY, 50); svcs = new DummyHAService[2]; svcs[0] = new DummyHAService(HAServiceState.INITIALIZING, new InetSocketAddress("svc1", 1234)); svcs[0].setSharedResource(sharedResource); svcs[1] = new DummyHAService(HAServiceState.INITIALIZING, new InetSocketAddress("svc2", 1234)); svcs[1].setSharedResource(sharedResource); this.ctx = new TestContext(); this.zks = zks; }
Example 2
Source File: MiniZKFCCluster.java From big-c with Apache License 2.0 | 6 votes |
public MiniZKFCCluster(Configuration conf, ZooKeeperServer zks) { this.conf = conf; // Fast check interval so tests run faster conf.setInt(CommonConfigurationKeys.HA_HM_CHECK_INTERVAL_KEY, 50); conf.setInt(CommonConfigurationKeys.HA_HM_CONNECT_RETRY_INTERVAL_KEY, 50); conf.setInt(CommonConfigurationKeys.HA_HM_SLEEP_AFTER_DISCONNECT_KEY, 50); svcs = new DummyHAService[2]; svcs[0] = new DummyHAService(HAServiceState.INITIALIZING, new InetSocketAddress("svc1", 1234)); svcs[0].setSharedResource(sharedResource); svcs[1] = new DummyHAService(HAServiceState.INITIALIZING, new InetSocketAddress("svc2", 1234)); svcs[1].setSharedResource(sharedResource); this.ctx = new TestContext(); this.zks = zks; }
Example 3
Source File: NameNode.java From hadoop with Apache License 2.0 | 5 votes |
synchronized HAServiceStatus getServiceStatus() throws ServiceFailedException, AccessControlException { namesystem.checkSuperuserPrivilege(); if (!haEnabled) { throw new ServiceFailedException("HA for namenode is not enabled"); } if (state == null) { return new HAServiceStatus(HAServiceState.INITIALIZING); } HAServiceState retState = state.getServiceState(); HAServiceStatus ret = new HAServiceStatus(retState); if (retState == HAServiceState.STANDBY) { String safemodeTip = namesystem.getSafeModeTip(); if (!safemodeTip.isEmpty()) { ret.setNotReadyToBecomeActive( "The NameNode is in safemode. " + safemodeTip); } else { ret.setReadyToBecomeActive(); } } else if (retState == HAServiceState.ACTIVE) { ret.setReadyToBecomeActive(); } else { ret.setNotReadyToBecomeActive("State is " + state); } return ret; }
Example 4
Source File: ZKFailoverController.java From hadoop with Apache License 2.0 | 5 votes |
private void doCedeActive(int millisToCede) throws AccessControlException, ServiceFailedException, IOException { int timeout = FailoverController.getGracefulFenceTimeout(conf); // Lock elector to maintain lock ordering of elector -> ZKFC synchronized (elector) { synchronized (this) { if (millisToCede <= 0) { delayJoiningUntilNanotime = 0; recheckElectability(); return; } LOG.info("Requested by " + UserGroupInformation.getCurrentUser() + " at " + Server.getRemoteAddress() + " to cede active role."); boolean needFence = false; try { localTarget.getProxy(conf, timeout).transitionToStandby(createReqInfo()); LOG.info("Successfully ensured local node is in standby mode"); } catch (IOException ioe) { LOG.warn("Unable to transition local node to standby: " + ioe.getLocalizedMessage()); LOG.warn("Quitting election but indicating that fencing is " + "necessary"); needFence = true; } delayJoiningUntilNanotime = System.nanoTime() + TimeUnit.MILLISECONDS.toNanos(millisToCede); elector.quitElection(needFence); serviceState = HAServiceState.INITIALIZING; } } recheckElectability(); }
Example 5
Source File: ZKFailoverController.java From hadoop with Apache License 2.0 | 5 votes |
void verifyChangedServiceState(HAServiceState changedState) { synchronized (elector) { synchronized (this) { if (serviceState == HAServiceState.INITIALIZING) { if (quitElectionOnBadState) { LOG.debug("rechecking for electability from bad state"); recheckElectability(); } return; } if (changedState == serviceState) { serviceStateMismatchCount = 0; return; } if (serviceStateMismatchCount == 0) { // recheck one more time. As this might be due to parallel transition. serviceStateMismatchCount++; return; } // quit the election as the expected state and reported state // mismatches. LOG.error("Local service " + localTarget + " has changed the serviceState to " + changedState + ". Expected was " + serviceState + ". Quitting election marking fencing necessary."); delayJoiningUntilNanotime = System.nanoTime() + TimeUnit.MILLISECONDS.toNanos(1000); elector.quitElection(true); quitElectionOnBadState = true; serviceStateMismatchCount = 0; serviceState = HAServiceState.INITIALIZING; } } }
Example 6
Source File: NameNode.java From big-c with Apache License 2.0 | 5 votes |
synchronized HAServiceStatus getServiceStatus() throws ServiceFailedException, AccessControlException { namesystem.checkSuperuserPrivilege(); if (!haEnabled) { throw new ServiceFailedException("HA for namenode is not enabled"); } if (state == null) { return new HAServiceStatus(HAServiceState.INITIALIZING); } HAServiceState retState = state.getServiceState(); HAServiceStatus ret = new HAServiceStatus(retState); if (retState == HAServiceState.STANDBY) { String safemodeTip = namesystem.getSafeModeTip(); if (!safemodeTip.isEmpty()) { ret.setNotReadyToBecomeActive( "The NameNode is in safemode. " + safemodeTip); } else { ret.setReadyToBecomeActive(); } } else if (retState == HAServiceState.ACTIVE) { ret.setReadyToBecomeActive(); } else { ret.setNotReadyToBecomeActive("State is " + state); } return ret; }
Example 7
Source File: ZKFailoverController.java From big-c with Apache License 2.0 | 5 votes |
private void doCedeActive(int millisToCede) throws AccessControlException, ServiceFailedException, IOException { int timeout = FailoverController.getGracefulFenceTimeout(conf); // Lock elector to maintain lock ordering of elector -> ZKFC synchronized (elector) { synchronized (this) { if (millisToCede <= 0) { delayJoiningUntilNanotime = 0; recheckElectability(); return; } LOG.info("Requested by " + UserGroupInformation.getCurrentUser() + " at " + Server.getRemoteAddress() + " to cede active role."); boolean needFence = false; try { localTarget.getProxy(conf, timeout).transitionToStandby(createReqInfo()); LOG.info("Successfully ensured local node is in standby mode"); } catch (IOException ioe) { LOG.warn("Unable to transition local node to standby: " + ioe.getLocalizedMessage()); LOG.warn("Quitting election but indicating that fencing is " + "necessary"); needFence = true; } delayJoiningUntilNanotime = System.nanoTime() + TimeUnit.MILLISECONDS.toNanos(millisToCede); elector.quitElection(needFence); serviceState = HAServiceState.INITIALIZING; } } recheckElectability(); }
Example 8
Source File: ZKFailoverController.java From big-c with Apache License 2.0 | 5 votes |
void verifyChangedServiceState(HAServiceState changedState) { synchronized (elector) { synchronized (this) { if (serviceState == HAServiceState.INITIALIZING) { if (quitElectionOnBadState) { LOG.debug("rechecking for electability from bad state"); recheckElectability(); } return; } if (changedState == serviceState) { serviceStateMismatchCount = 0; return; } if (serviceStateMismatchCount == 0) { // recheck one more time. As this might be due to parallel transition. serviceStateMismatchCount++; return; } // quit the election as the expected state and reported state // mismatches. LOG.error("Local service " + localTarget + " has changed the serviceState to " + changedState + ". Expected was " + serviceState + ". Quitting election marking fencing necessary."); delayJoiningUntilNanotime = System.nanoTime() + TimeUnit.MILLISECONDS.toNanos(1000); elector.quitElection(true); quitElectionOnBadState = true; serviceStateMismatchCount = 0; serviceState = HAServiceState.INITIALIZING; } } }
Example 9
Source File: NameNode.java From hadoop with Apache License 2.0 | 4 votes |
synchronized HAServiceState getServiceState() { if (state == null) { return HAServiceState.INITIALIZING; } return state.getServiceState(); }
Example 10
Source File: ZKFailoverController.java From hadoop with Apache License 2.0 | 4 votes |
/** * Check the current state of the service, and join the election * if it should be in the election. */ private void recheckElectability() { // Maintain lock ordering of elector -> ZKFC synchronized (elector) { synchronized (this) { boolean healthy = lastHealthState == State.SERVICE_HEALTHY; long remainingDelay = delayJoiningUntilNanotime - System.nanoTime(); if (remainingDelay > 0) { if (healthy) { LOG.info("Would have joined master election, but this node is " + "prohibited from doing so for " + TimeUnit.NANOSECONDS.toMillis(remainingDelay) + " more ms"); } scheduleRecheck(remainingDelay); return; } switch (lastHealthState) { case SERVICE_HEALTHY: elector.joinElection(targetToData(localTarget)); if (quitElectionOnBadState) { quitElectionOnBadState = false; } break; case INITIALIZING: LOG.info("Ensuring that " + localTarget + " does not " + "participate in active master election"); elector.quitElection(false); serviceState = HAServiceState.INITIALIZING; break; case SERVICE_UNHEALTHY: case SERVICE_NOT_RESPONDING: LOG.info("Quitting master election for " + localTarget + " and marking that fencing is necessary"); elector.quitElection(true); serviceState = HAServiceState.INITIALIZING; break; case HEALTH_MONITOR_FAILED: fatalError("Health monitor failed!"); break; default: throw new IllegalArgumentException("Unhandled state:" + lastHealthState); } } } }
Example 11
Source File: NameNode.java From big-c with Apache License 2.0 | 4 votes |
synchronized HAServiceState getServiceState() { if (state == null) { return HAServiceState.INITIALIZING; } return state.getServiceState(); }
Example 12
Source File: ZKFailoverController.java From big-c with Apache License 2.0 | 4 votes |
/** * Check the current state of the service, and join the election * if it should be in the election. */ private void recheckElectability() { // Maintain lock ordering of elector -> ZKFC synchronized (elector) { synchronized (this) { boolean healthy = lastHealthState == State.SERVICE_HEALTHY; long remainingDelay = delayJoiningUntilNanotime - System.nanoTime(); if (remainingDelay > 0) { if (healthy) { LOG.info("Would have joined master election, but this node is " + "prohibited from doing so for " + TimeUnit.NANOSECONDS.toMillis(remainingDelay) + " more ms"); } scheduleRecheck(remainingDelay); return; } switch (lastHealthState) { case SERVICE_HEALTHY: elector.joinElection(targetToData(localTarget)); if (quitElectionOnBadState) { quitElectionOnBadState = false; } break; case INITIALIZING: LOG.info("Ensuring that " + localTarget + " does not " + "participate in active master election"); elector.quitElection(false); serviceState = HAServiceState.INITIALIZING; break; case SERVICE_UNHEALTHY: case SERVICE_NOT_RESPONDING: LOG.info("Quitting master election for " + localTarget + " and marking that fencing is necessary"); elector.quitElection(true); serviceState = HAServiceState.INITIALIZING; break; case HEALTH_MONITOR_FAILED: fatalError("Health monitor failed!"); break; default: throw new IllegalArgumentException("Unhandled state:" + lastHealthState); } } } }