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当我动态添加一个 Hadoop 从节点的之后,出现了一个问题:
starting datanode, logging to /usr/local/hadoop1.1/libexec/../logs/hadoop-root-datanode-hadoop.out
STARTUP_MSG: version = 1.1.2
STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.1 -r 1440782; compiled by ‘hortonfo’ on Thu Jan 31 02:03:24 UTC 2013
************************************************************/
2014-10-31 19:24:28,543 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2014-10-31 19:24:28,565 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered.
2014-10-31 19:24:28,566 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2014-10-31 19:24:28,566 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system started
2014-10-31 19:24:28,728 INFO org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi registered.
2014-10-31 19:24:29,221 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /usr/local/hadoop/tmp/dfs/data: namenode namespaceID = 942590743; datanode namespaceID = 463031076
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:399)
at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:309)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1651)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1590)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1608)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1734)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1751)
2014-10-31 19:24:29,229 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at hadoop/192.168.0.100
************************************************************/
<?xml-stylesheet type=”text/xsl” href=”https://www.linuxidc.com/Linux/2014-11/configuration.xsl”?>
<!– Put site-specific property overrides in this file. –>
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
<property>
<name>dfs.name.dir</name>
<value>${hadoop.tmp.dir}/dfs/name</value>
<description>this is a comma-delimited list of directories
then the name table is replicated in all of the directories,
for redunancy.
</description>
</property>
</configuration>
<name>dfs.data.dir</name>
<value>/data/hdfs/data</value>
</property>
namespaceID=463031076
storageID=DS-1787154912-192.168.0.100-50010-1413940826285
cTime=0
storageType=DATA_NODE
layoutVersion=-32
namespaceID=942590743
cTime=0
storageType=NAME_NODE
layoutVersion=-32
Ubuntu 13.04 上搭建 Hadoop 环境 http://www.linuxidc.com/Linux/2013-06/86106.htm
Ubuntu 12.10 +Hadoop 1.2.1 版本集群配置 http://www.linuxidc.com/Linux/2013-09/90600.htm
Ubuntu 上搭建 Hadoop 环境(单机模式 + 伪分布模式)http://www.linuxidc.com/Linux/2013-01/77681.htm
Ubuntu 下 Hadoop 环境的配置 http://www.linuxidc.com/Linux/2012-11/74539.htm
单机版搭建 Hadoop 环境图文教程详解 http://www.linuxidc.com/Linux/2012-02/53927.htm
搭建 Hadoop 环境(在 Winodws 环境下用虚拟机虚拟两个 Ubuntu 系统进行搭建)http://www.linuxidc.com/Linux/2011-12/48894.htm
更多 Hadoop 相关信息见Hadoop 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=13
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