几天前我曾问过这个问题，但不知道日志文件的位置。
我在 core-site.xml 中有如下配置设置
<configuration>
<property>
<name>hadoop.tmp.dir</name>
<value>/usr/local/hadoop/tmp</value>
<description>A base for other temporary directories.</description>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:54310</value>
<description>blah blah....</description>
</property>
</configuration>
hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
<description>Default block replication.
The actual number of replications can be specified when the file is created.
The default is used if replication is not specified in create time.
</description>
</property>
</configuration>
mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>localhost:54311</value>
<description>The host and port that the MapReduce job tracker runs
at. If "local", then jobs are run in-process as a single map
and reduce task.
</description>
</property>
</configuration>
Namenode 的日志文件如下
2013-01-29 02:12:30,078 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = dheerajvc-ThinkPad-T420/127.0.1.1
STARTUP_MSG: args = []
STARTUP_MSG: version = 1.1.1
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.1 -r 1411108; compiled by 'hortonfo' on Mon Nov 19 10:48:11 UTC 2012
************************************************************/
2013-01-29 02:12:30,184 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2013-01-29 02:12:30,192 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2013-01-29 02:12:30,193 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2013-01-29 02:12:30,193 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system started
2013-01-29 02:12:30,326 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
2013-01-29 02:12:30,329 WARN org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already exists!
2013-01-29 02:12:30,333 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source jvm registered.
2013-01-29 02:12:30,333 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source NameNode registered.
2013-01-29 02:12:30,351 INFO org.apache.hadoop.hdfs.util.GSet: VM type = 32-bit
2013-01-29 02:12:30,351 INFO org.apache.hadoop.hdfs.util.GSet: 2% max memory = 17.77875 MB
2013-01-29 02:12:30,351 INFO org.apache.hadoop.hdfs.util.GSet: capacity = 2^22 = 4194304 entries
2013-01-29 02:12:30,351 INFO org.apache.hadoop.hdfs.util.GSet: recommended=4194304, actual=4194304
2013-01-29 02:12:30,371 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: fsOwner=hduser
2013-01-29 02:12:30,371 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: supergroup=supergroup
2013-01-29 02:12:30,371 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isPermissionEnabled=true
2013-01-29 02:12:30,377 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.block.invalidate.limit=100
2013-01-29 02:12:30,377 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)
2013-01-29 02:12:30,393 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Registered FSNamesystemStateMBean and NameNodeMXBean
2013-01-29 02:12:30,408 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Caching file names occuring more than 10 times
2013-01-29 02:12:30,416 INFO org.apache.hadoop.hdfs.server.common.Storage: Number of files = 1
2013-01-29 02:12:30,421 INFO org.apache.hadoop.hdfs.server.common.Storage: Number of files under construction = 0
2013-01-29 02:12:30,421 INFO org.apache.hadoop.hdfs.server.common.Storage: Image file of size 112 loaded in 0 seconds.
2013-01-29 02:12:30,421 INFO org.apache.hadoop.hdfs.server.common.Storage: Edits file /tmp/hadoop/dfs/name/current/edits of size 4 edits # 0 loaded in 0 seconds.
2013-01-29 02:12:30,422 INFO org.apache.hadoop.hdfs.server.common.Storage: Image file of size 112 saved in 0 seconds.
2013-01-29 02:12:30,525 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: closing edit log: position=4, editlog=/tmp/hadoop/dfs/name/current/edits
2013-01-29 02:12:30,526 INFO org.apache.hadoop.hdfs.server.namenode.FSEditLog: close success: truncate to 4, editlog=/tmp/hadoop/dfs/name/current/edits
2013-01-29 02:12:30,878 INFO org.apache.hadoop.hdfs.server.namenode.NameCache: initialized with 0 entries 0 lookups
2013-01-29 02:12:30,879 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Finished loading FSImage in 513 msecs
2013-01-29 02:12:30,880 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.safemode.threshold.pct = 0.949999988079071
2013-01-29 02:12:30,880 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0
2013-01-29 02:12:30,880 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.safemode.extension = 0
2013-01-29 02:12:30,887 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Total number of blocks = 0
2013-01-29 02:12:30,887 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of invalid blocks = 0
2013-01-29 02:12:30,887 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of under-replicated blocks = 0
2013-01-29 02:12:30,887 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Number of over-replicated blocks = 0
2013-01-29 02:12:30,887 INFO org.apache.hadoop.hdfs.StateChange: STATE* Safe mode termination scan for invalid, over- and under-replicated blocks completed in 7 msec
2013-01-29 02:12:30,887 INFO org.apache.hadoop.hdfs.StateChange: STATE* Leaving safe mode after 0 secs.
2013-01-29 02:12:30,888 INFO org.apache.hadoop.hdfs.StateChange: STATE* Network topology has 0 racks and 0 datanodes
2013-01-29 02:12:30,888 INFO org.apache.hadoop.hdfs.StateChange: STATE* UnderReplicatedBlocks has 0 blocks
2013-01-29 02:12:30,892 INFO org.apache.hadoop.util.HostsFileReader: Refreshing hosts (include/exclude) list
2013-01-29 02:12:30,892 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: ReplicateQueue QueueProcessingStatistics: First cycle completed 0 blocks in 1 msec
2013-01-29 02:12:30,892 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: ReplicateQueue QueueProcessingStatistics: Queue flush completed 0 blocks in 1 msec processing time, 1 msec clock time, 1 cycles
2013-01-29 02:12:30,892 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: InvalidateQueue QueueProcessingStatistics: First cycle completed 0 blocks in 0 msec
2013-01-29 02:12:30,892 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: InvalidateQueue QueueProcessingStatistics: Queue flush completed 0 blocks in 0 msec processing time, 0 msec clock time, 1 cycles
2013-01-29 02:12:30,896 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source FSNamesystemMetrics registered.
2013-01-29 02:12:30,908 INFO org.apache.hadoop.ipc.Server: Starting SocketReader
2013-01-29 02:12:30,909 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source RpcDetailedActivityForPort50070 registered.
2013-01-29 02:12:30,910 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source RpcActivityForPort50070 registered.
2013-01-29 02:12:30,912 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Namenode up at: localhost/127.0.0.1:50070
2013-01-29 02:12:30,913 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: java.lang.IllegalArgumentException: Socket address is null
at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:142)
at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:130)
at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:340)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:306)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:529)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1403)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1412)
2013-01-29 02:12:30,913 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at dheerajvc-ThinkPad-T420/127.0.1.1
************************************************************/
netstat --numeric-ports | grep "5431" 没有产生任何结果。所以我认为这些端口是免费的。namenode 期望什么套接字？
编辑：只有jobtracker和tasktracker正在启动，namenode是否需要在datanode和secondarynamenode启动之前启动？
我可以格式化 namenode ，但为什么它使用 /tmp 目录？我认为它应该使用 core-site.xml 中提到的位置
$ hadoop namenode -format
Warning: $HADOOP_HOME is deprecated.
13/01/31 03:34:22 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = dheerajvc-ThinkPad-T420/127.0.1.1
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 1.1.1
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.1 -r 1411108; compiled by 'hortonfo' on Mon Nov 19 10:48:11 UTC 2012
************************************************************/
13/01/31 03:34:22 INFO util.GSet: VM type = 32-bit
13/01/31 03:34:22 INFO util.GSet: 2% max memory = 17.77875 MB
13/01/31 03:34:22 INFO util.GSet: capacity = 2^22 = 4194304 entries
13/01/31 03:34:22 INFO util.GSet: recommended=4194304, actual=4194304
13/01/31 03:34:22 INFO namenode.FSNamesystem: fsOwner=dheerajvc
13/01/31 03:34:22 INFO namenode.FSNamesystem: supergroup=supergroup
13/01/31 03:34:22 INFO namenode.FSNamesystem: isPermissionEnabled=true
13/01/31 03:34:22 INFO namenode.FSNamesystem: dfs.block.invalidate.limit=100
13/01/31 03:34:22 INFO namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)
13/01/31 03:34:22 INFO namenode.NameNode: Caching file names occuring more than 10 times
13/01/31 03:34:22 INFO common.Storage: Image file of size 115 saved in 0 seconds.
13/01/31 03:34:22 INFO namenode.FSEditLog: closing edit log: position=4, editlog=/tmp/hadoop/dfs/name/current/edits
13/01/31 03:34:22 INFO namenode.FSEditLog: close success: truncate to 4, editlog=/tmp/hadoop/dfs/name/current/edits
13/01/31 03:34:23 INFO common.Storage: Storage directory /tmp/hadoop/dfs/name has been successfully formatted.
13/01/31 03:34:23 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at dheerajvc-ThinkPad-T420/127.0.1.1
************************************************************/