16-11-14 21:23:41,540 FATAL org.apache.hadoop.hdfs.server.namenode.FSEditLog: Error: starting log segment 4234 failed for required journal (JournalAndStream(mgr=QJM to [
192.168.58.183:8485, 192.168.58.181:8485, 192.168.58.182:8485], stream=null))java.io.IOException: Timed out waiting 20000ms for a quorum of nodes to respond.at org.apache.hadoop.hdfs.qjournal.client.AsyncLoggerSet.waitForWriteQuorum(AsyncLoggerSet.java:137)
at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.startLogSegment(QuorumJournalManager.java:403)
at org.apache.hadoop.hdfs.server.namenode.JournalSet$JournalAndStream.startLogSegment(JournalSet.java:107)
at org.apache.hadoop.hdfs.server.namenode.JournalSet$3.apply(JournalSet.java:222)
at org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:393)
at org.apache.hadoop.hdfs.server.namenode.JournalSet.startLogSegment(JournalSet.java:219)
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.startLogSegment(FSEditLog.java:1192)
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.rollEditLog(FSEditLog.java:1161)
at org.apache.hadoop.hdfs.server.namenode.FSImage.rollEditLog(FSImage.java:1243)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:6377)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:989)
at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:142)
at org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:12025)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:975)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1656)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)
2016-11-14 21:23:42,192 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2016-11-14 21:23:42,418 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at CentOSMaster/
192.168.58.180看最后发现时主节点的Namenode死了。
那么
启动主节点的namenode
sbin/hadoop-daemon.sh start namenode
然后切换为激活，其他不需要。Standby节点的namenode没停止，不需要重启，也不需要同步主节点的信息。
bin/hdfs haadmin -transitionToActive nn1