我是 hadoop 的新手，我已经安装了 micheal ( http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/ )。
当我运行命令/usr/local/hadoop/bin/start-all.sh 时，通常这会在机器上启动一个 Namenode、Datanode、Jobtracker 和一个 Tasktracker。
我只得到 TaskTracker 启动这里是跟踪:
hduser@srv591 ~ $ /usr/local/hadoop/bin/start-all.sh
starting namenode, logging to /usr/local/hadoop/libexec/../logs/hadoop-hduser-namenode-srv591.out
localhost: starting datanode, logging to /usr/local/hadoop/libexec/../logs/hadoop-hduser-datanode-srv591.out
localhost: starting secondarynamenode, logging to /usr/local/hadoop/libexec/../logs/hadoop-hduser-secondarynamenode-srv591.out
localhost: Exception in thread "main" org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /app/hadoop/tmp/dfs/namesecondary is in an inconsistent state: checkpoint directory does not exist or is not accessible.
localhost: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.recoverCreate(SecondaryNameNode.java:729)
localhost: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:208)
localhost: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:150)
localhost: at org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:676)
starting jobtracker, logging to /usr/local/hadoop/libexec/../logs/hadoop-hduser-jobtracker-srv591.out
localhost: starting tasktracker, logging to /usr/local/hadoop/libexec/../logs/hadoop-hduser-tasktracker-srv591.out
hduser@srv591 ~ $ /usr/local/java/bin/jps
19469 TaskTracker
19544 Jps
Tariq的方案是可以的，但是这里还是要启动jobtracker和namenode是logs的内容
hduser@srv591 ~ $ cat /usr/local/hadoop/libexec/../logs/hadoop-hduser-namenode-srv591.log
2013-09-21 00:30:13,765 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = srv591.sd-france.net/46.21.207.111
STARTUP_MSG: args = []
STARTUP_MSG: version = 1.2.1
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.2 -r 1503152; compiled by 'mattf' on Mon Jul 22 15:23:09 PDT 2013
STARTUP_MSG: java = 1.7.0_40
************************************************************/
2013-09-21 00:30:13,904 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2013-09-21 00:30:13,913 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2013-09-21 00:30:13,914 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2013-09-21 00:30:13,914 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system started
2013-09-21 00:30:14,140 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
2013-09-21 00:30:14,144 WARN org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already exists!
2013-09-21 00:30:14,148 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source jvm registered.
2013-09-21 00:30:14,149 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source NameNode registered.
2013-09-21 00:30:14,164 INFO org.apache.hadoop.hdfs.util.GSet: Computing capacity for map BlocksMap
2013-09-21 00:30:14,164 INFO org.apache.hadoop.hdfs.util.GSet: VM type = 64-bit
2013-09-21 00:30:14,164 INFO org.apache.hadoop.hdfs.util.GSet: 2.0% max memory = 932184064
2013-09-21 00:30:14,164 INFO org.apache.hadoop.hdfs.util.GSet: capacity = 2^21 = 2097152 entries
2013-09-21 00:30:14,164 INFO org.apache.hadoop.hdfs.util.GSet: recommended=2097152, actual=2097152
2013-09-21 00:30:14,178 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: fsOwner=hduser
2013-09-21 00:30:14,178 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: supergroup=supergroup
2013-09-21 00:30:14,178 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isPermissionEnabled=true
2013-09-21 00:30:14,185 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.block.invalidate.limit=100
2013-09-21 00:30:14,185 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)
2013-09-21 00:30:14,335 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered FSNamesystemStateMBean and NameNodeMXBean
2013-09-21 00:30:14,370 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: dfs.namenode.edits.toleration.length = 0
2013-09-21 00:30:14,370 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Caching file names occuring more than 10 times
2013-09-21 00:30:14,373 INFO org.apache.hadoop.hdfs.server.common.Storage: Cannot access storage directory /app/hadoop/tmp/dfs/name
2013-09-21 00:30:14,374 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /app/hadoop/tmp/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:304)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)
2013-09-21 00:30:14,404 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: org.apache.hadoop.hdfs.server.common.InconsistentFSStateException: Directory /app/hadoop/tmp/dfs/name is in an inconsistent state: storage directory does not exist or is not accessible.
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:304)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)
2013-09-21 00:30:14,405 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at srv591.sd-france.net/46.21.207.111
************************************************************/
2013-09-21 00:31:08,869 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = srv591.sd-france.net/46.21.207.111
STARTUP_MSG: args = []
STARTUP_MSG: version = 1.2.1
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.2 -r 1503152; compiled by 'mattf' on Mon Jul 22 15:23:09 PDT 2013
STARTUP_MSG: java = 1.7.0_40
************************************************************/
2013-09-21 00:31:09,012 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2013-09-21 00:31:09,021 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2013-09-21 00:31:09,022 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2013-09-21 00:31:09,022 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system started
2013-09-21 00:31:09,240 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
2013-09-21 00:31:09,244 WARN org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already exists!
2013-09-21 00:31:09,248 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source jvm registered.
2013-09-21 00:31:09,249 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source NameNode registered.
2013-09-21 00:31:09,264 INFO org.apache.hadoop.hdfs.util.GSet: Computing capacity for map BlocksMap
2013-09-21 00:31:09,264 INFO org.apache.hadoop.hdfs.util.GSet: VM type = 64-bit
2013-09-21 00:31:09,264 INFO org.apache.hadoop.hdfs.util.GSet: 2.0% max memory = 932184064
2013-09-21 00:31:09,264 INFO org.apache.hadoop.hdfs.util.GSet: capacity = 2^21 = 2097152 entries
2013-09-21 00:31:09,264 INFO org.apache.hadoop.hdfs.util.GSet: recommended=2097152, actual=2097152
2013-09-21 00:31:09,278 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: fsOwner=hduser
2013-09-21 00:31:09,278 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: supergroup=supergroup
2013-09-21 00:31:09,278 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isPermissionEnabled=true
2013-09-21 00:31:09,286 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.block.invalidate.limit=100
2013-09-21 00:31:09,286 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)
2013-09-21 00:31:09,457 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered FSNamesystemStateMBean and NameNodeMXBean
2013-09-21 00:31:09,496 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: dfs.namenode.edits.toleration.length = 0
2013-09-21 00:31:09,496 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Caching file names occuring more than 10 times
2013-09-21 00:31:09,501 INFO org.apache.hadoop.hdfs.server.common.Storage: Cannot lock storage /app/hadoop/tmp/dfs/name. The directory is already locked.
2013-09-21 00:31:09,501 ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed.
java.io.IOException: Cannot lock storage /app/hadoop/tmp/dfs/name. The directory is already locked.
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:599)
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:452)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:299)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)
2013-09-21 00:31:09,508 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.IOException: Cannot lock storage /app/hadoop/tmp/dfs/name. The directory is already locked.
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:599)
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:452)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:299)
at org.apache.hadoop.hdfs.server.namenode.FSDirectory.loadFSImage(FSDirectory.java:104)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.initialize(FSNamesystem.java:427)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.<init>(FSNamesystem.java:395)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:299)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:569)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1479)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1488)
2013-09-21 00:31:09,509 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at srv591.sd-france.net/46.21.207.111
************************************************************/
这是数据节点的日志:
************************************************************/
2013-09-21 01:01:24,622 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG: host = srv591.sd-france.net/46.21.207.111
STARTUP_MSG: args = []
STARTUP_MSG: version = 1.2.1
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.2 -r 1503152; compiled by 'mattf' on Mon Jul 22 15:23:09 PDT 2013
STARTUP_MSG: java = 1.7.0_40
************************************************************/
2013-09-21 01:01:24,855 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2013-09-21 01:01:24,870 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2013-09-21 01:01:24,871 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2013-09-21 01:01:24,871 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system started
2013-09-21 01:01:25,204 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
2013-09-21 01:01:25,224 WARN org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already exists!
2013-09-21 01:01:25,499 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID = 1590050521; datanode namespaceID = 1863017904
at org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:232)
at org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:147)
at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:414)
at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:321)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1712)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1651)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1669)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1795)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1812)
2013-09-21 01:01:25,500 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
最佳答案
请确保您已创建目录 /app/hadoop/tmp/dfs/namesecondary 并具有适当的权限。此外，检查日志(NN、DN、SNN、JT)也会有所帮助。如果您仍然遇到问题，请向我们展示日志和配置文件。
回应您的评论:
org.apache.hadoop.hdfs.server.common.InconsistentFSStateException:目录/app/hadoop/tmp/dfs/name 处于不一致状态:存储目录不存在或不可访问。
看起来您还没有创建您在配置文件中使用的任何目录。这个异常清楚地表明了这一点。请确保您已创建具有适当权限的所有目录，您将这些目录用作配置属性的值。
关于Hadoop 组件未启动，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18924120/
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