我们有一台旧的 hadoop 集群机器 hadoop - 2.6 版
集群中的所有机器都是redhat版本 - 7.3
我们在最后一台主机上启动备用名称节点时遇到问题
从日志（在 /var/log/hadoop/hdf 下），我们可以看到错误 -找不到有效的图像文件
我不确定我的解决方案，但这是否意味着我们需要删除/hadoop/hdfs/journal/hdfsha/current下的文件（ edits_inprogress_XXXXX），然后重新启动备用名称节点服务？
2018-01-24 16:10:27,826 ERROR namenode.NameNode (NameNode.java:main(1774)) - Failed to start namenode.
java.io.FileNotFoundException: No valid image files found
at org.apache.hadoop.hdfs.server.namenode.FSImageTransactionalStorageInspector.getLatestImages(FSImageTransactionalStorageInspector.java:165)
at org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:618)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:289)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1045)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:703)
at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:688)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:752)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:992)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:976)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1701)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1769)
2018-01-24 16:10:27,829 INFO util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status 1
2018-01-24 16:10:27,845 INFO namenode.NameNode (LogAdapter.java:info(47)) - SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at master03.sys573.com/102.14.22.29
************************************************************/
我也尝试使用hadoop namenode -format
但它的回报如下：
Could not format one or more JournalNodes. 1 exceptions thrown:
:8485: Directory /data/hadoop/hdfs/journal/hdfsha is in an inconsistent state: Can't format the storage directory because the current directory is not empty.
所有输出：
18/01/24 17:36:19 ERROR namenode.NameNode: Failed to start namenode.
org.apache.hadoop.hdfs.qjournal.client.QuorumException: Could not format one or more JournalNodes. 1 exceptions thrown:
:8485: Directory /data/hadoop/hdfs/journal/hdfsha is in an inconsistent state: Can't format the storage directory because the current directory is not empty.
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.checkEmptyCurrent(Storage.java:482)
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:558)
at org.apache.hadoop.hdfs.qjournal.server.JNStorage.format(JNStorage.java:185)
at org.apache.hadoop.hdfs.qjournal.server.Journal.format(Journal.java:217)
at org.apache.hadoop.hdfs.qjournal.server.JournalNodeRpcServer.format(JournalNodeRpcServer.java:145)
at org.apache.hadoop.hdfs.qjournal.protocolPB.QJournalProtocolServerSideTranslatorPB.format(QJournalProtocolServerSideTranslatorPB.java:145)
at org.apache.hadoop.hdfs.qjournal.protocol.QJournalProtocolProtos$QJournalProtocolService$2.callBlockingMethod(QJournalProtocolProtos.java:25419)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:640)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2351)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2347)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1866)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2345)