I have a hadoop cluster setup manually in high availability with one primary namenode,one standby namenode and one datanode. I formatted the namenode in the initial startup process, but if all the servers shut down due to electricity outage, I have to restart all the services again such as journal node,zookeeper,namenode,datanode and failover daemons.
However, when I start failover daemons(dfszkfailover) on both the namenodes, the namenode stops on both of them. For it to start, I have to format the namenode(on primary namenode) and delete the temp files.
This is my local setup and have to integrate on production as well. I cannot keep formatting namenode in production environment as I will lose all the data.
I read some of the answers explaining to point the namenode and datanode directory(in hdfs-site.xml) to some specific folder other than /tmp. I am already pointing it in my home directory.
Please suggest some method so that namenode and failover daemons both start without formatting the namenode.
EDIT-- I am sharing the last 100 lines of my namenode nn1 logs
192.168.12.12:8485: Journal Storage Directory /tmp/hadoop/dfs/journalnode/ha-cluster not formatted
at org.apache.hadoop.hdfs.qjournal.server.Journal.checkFormatted(Journal.java:479)
at org.apache.hadoop.hdfs.qjournal.server.Journal.getLastPromisedEpoch(Journal.java:247)
at org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.getJournalState(JournalNodeRpcServer.java:139)
at org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.getJournalState(QJournalProtocolServerSideTranslatorPB.java:118)
at org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:25415)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:503)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:871)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:817)
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:1893)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2606)
at org.apache.hadoop.hdfs.qjournal.client.QuorumException.create(QuorumException.java:81)
at org.apache.hadoop.hdfs.qjournal.client.QuorumCall.rethrowException(QuorumCall.java:286)
at org.apache.hadoop.hdfs.qjournal.client.AsyncLoggerSet.waitForWriteQuorum(AsyncLoggerSet.java:142)
at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.createNewUniqueEpoch(QuorumJournalManager.java:180)
at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.recoverUnfinalizedSegments(QuorumJournalManager.java:438)
at org.apache.hadoop.hdfs.server.namenode.JournalSet$8.apply(JournalSet.java:624)
at org.apache.hadoop.hdfs.server.namenode.JournalSet.mapJournalsAndReportErrors(JournalSet.java:393)
at org.apache.hadoop.hdfs.server.namenode.JournalSet.recoverUnfinalizedSegments(JournalSet.java:621)
at org.apache.hadoop.hdfs.server.namenode.FSEditLog.recoverUnclosedStreams(FSEditLog.java:1521)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.startActiveServices(FSNamesystem.java:1180)
at org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.startActiveServices(NameNode.java:1919)
at org.apache.hadoop.hdfs.server.namenode.ha.ActiveState.enterState(ActiveState.java:61)
at org.apache.hadoop.hdfs.server.namenode.ha.HAState.setStateInternal(HAState.java:64)
at org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.setState(StandbyState.java:49)
at org.apache.hadoop.hdfs.server.namenode.NameNode.transitionToActive(NameNode.java:1777)
at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.transitionToActive(NameNodeRpcServer.java:1649)
at org.apache.hadoop.ha.protocolPB.HAServiceProtocolServerSideTranslatorPB.transitionToActive(HAServiceProtocolServerSideTranslatorPB.java:107)
at org.apache.hadoop.ha.proto.HAServiceProtocolProtos$HAServiceProtocolService$2.callBlockingMethod(HAServiceProtocolProtos.java:4460)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:503)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:871)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:817)
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:1893)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2606)
2019-12-06 10:57:57,541 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1: Error: recoverUnfinalizedSegments failed for required journal (JournalAndStream(mgr=QJM to [192.168.12.10:8485, 192.168.12.11:8485, 192.168.12.12:8485], stream=null))
2019-12-06 10:57:57,546 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at nn1/192.168.12.10
************************************************************/
