hdfs作为接收器的flume中的nosuchmethod错误

np8igboo  于 2021-06-03  发布在  Hadoop
关注(0)|答案(3)|浏览(495)

我正在尝试配置Flume与hdfs作为Flume。
这是我的flume.conf文件：

agent1.channels.ch1.type = memory

agent1.sources.avro-source1.channels = ch1
agent1.sources.avro-source1.type = avro
agent1.sources.avro-source1.bind = 0.0.0.0
agent1.sources.avro-source1.port = 41414

agent1.sinks.log-sink1.type = logger

agent1.sinks.hdfs-sink.channel=ch1
agent1.sinks.hdfs-sink.type=hdfs
agent1.sinks.hdfs-sink.hdfs.path=hdfs://localhost:9000/flume/flumehdfs/
agent1.sinks.hdfs-sink.hdfs.fileType = DataStream
agent1.sinks.hdfs-sink.hdfs.writeFormat = Text
agent1.sinks.hdfs-sink.hdfs.batchSize = 1000
agent1.sinks.hdfs-sink.hdfs.rollSize = 0
agent1.sinks.hdfs-sink.hdfs.rollCount = 10000
agent1.sinks.hdfs-sink.hdfs.rollInterval = 600

agent1.channels = ch1
agent1.sources = avro-source1
agent1.sinks = log-sink1 hdfs-sink

我的hadoop版本是：

Hadoop 0.20.2
Subversion https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20 -r 911707

Flume版本为：

apache-flume-1.4.0

我已经将这两个jar文件放在flume/lib目录中

hadoop-0.20.2-core
hadoop-common-0.22.0

我把hadoop公共jar放在那里，因为我在启动flume代理时遇到以下错误：

Unhandled error
java.lang.NoSuchMethodError:     org.apache.hadoop.security.UserGroupInformation.isSecurityEnabled()Z
at org.apache.flume.sink.hdfs.HDFSEventSink.authenticate(HDFSEventSink.java:491)
at org.apache.flume.sink.hdfs.HDFSEventSink.configure(HDFSEventSink.java:240)
at org.apache.flume.conf.Configurables.configure(Configurables.java:41)
at org.apache.flume.node.AbstractConfigurationProvider.loadSinks(AbstractConfigurationProvider.java:418)
at org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:103)
at org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:140)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:679)

现在代理开始了。这是启动日志：

logger=DEBUG,console
Info: Including Hadoop libraries found via (/home/user/Downloads/hadoop-0.20.2/bin/hadoop) for HDFS access
Exception in thread "main" java.lang.NoClassDefFoundError: classpath
Caused by: java.lang.ClassNotFoundException: classpath
    at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: classpath. Program will exit.
+ exec /usr/lib/jvm/default-java/bin/java -Xmx20m -Dflume.root.logger=DEBUG,console -cp '/home/user/Downloads/apache-flume-1.4.0-bin/conf:/home/user/Downloads/apache-flume-1.4.0-bin/lib/*' -Djava.library.path=:/home/user/Downloads/hadoop-0.20.2/bin/../lib/native/Linux-amd64-64 org.apache.flume.node.Application -n agent1 -f ./conf/flume.conf
2013-09-04 07:55:22,634 (lifecycleSupervisor-1-0) [INFO - org.apache.flume.node.PollingPropertiesFileConfigurationProvider.start(PollingPropertiesFileConfigurationProvider.java:61)] Configuration provider starting
2013-09-04 07:55:22,639 (lifecycleSupervisor-1-0) [DEBUG - org.apache.flume.node.PollingPropertiesFileConfigurationProvider.start(PollingPropertiesFileConfigurationProvider.java:78)] Configuration provider started
2013-09-04 07:55:22,640 (conf-file-poller-0) [DEBUG - org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:126)] Checking file:./conf/flume.conf for changes
2013-09-04 07:55:22,642 (conf-file-poller-0) [INFO - org.apache.flume.node.PollingPropertiesFileConfigurationProvider$FileWatcherRunnable.run(PollingPropertiesFileConfigurationProvider.java:133)] Reloading configuration file:./conf/flume.conf
2013-09-04 07:55:22,648 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,648 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1020)] Created context for hdfs-sink: hdfs.fileType
2013-09-04 07:55:22,649 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:loggerSink
2013-09-04 07:55:22,650 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1020)] Created context for loggerSink: type
2013-09-04 07:55:22,650 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,650 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,650 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,650 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,651 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,651 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:log-sink1
2013-09-04 07:55:22,651 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1020)] Created context for log-sink1: type
2013-09-04 07:55:22,651 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:930)] Added sinks: loggerSink Agent: agent
2013-09-04 07:55:22,654 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:930)] Added sinks: log-sink1 hdfs-sink Agent: agent1
2013-09-04 07:55:22,654 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,654 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,654 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:loggerSink
2013-09-04 07:55:22,654 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:hdfs-sink
2013-09-04 07:55:22,655 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.addProperty(FlumeConfiguration.java:1016)] Processing:log-sink1
2013-09-04 07:55:22,655 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.isValid(FlumeConfiguration.java:313)] Starting validation of configuration for agent: agent, initial-configuration: AgentConfiguration[agent]
SOURCES: {seqGenSrc={ parameters:{channels=memoryChannel, type=seq} }}
CHANNELS: {memoryChannel={ parameters:{capacity=100, type=memory} }}
SINKS: {loggerSink={ parameters:{type=logger, channel=memoryChannel} }}

2013-09-04 07:55:22,661 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.validateChannels(FlumeConfiguration.java:468)] Created channel memoryChannel
2013-09-04 07:55:22,671 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.validateSinks(FlumeConfiguration.java:674)] Creating sink: loggerSink using LOGGER
2013-09-04 07:55:22,673 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.isValid(FlumeConfiguration.java:371)] Post validation configuration for agent
AgentConfiguration created without Configuration stubs for which only basic syntactical validation was performed[agent]
SOURCES: {seqGenSrc={ parameters:{channels=memoryChannel, type=seq} }}
CHANNELS: {memoryChannel={ parameters:{capacity=100, type=memory} }}
AgentConfiguration created with Configuration stubs for which full validation was performed[agent]
SINKS: {loggerSink=ComponentConfiguration[loggerSink]
  CONFIG: 
    CHANNEL:memoryChannel
}

2013-09-04 07:55:22,673 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:135)] Channels:memoryChannel

2013-09-04 07:55:22,673 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:136)] Sinks loggerSink

2013-09-04 07:55:22,674 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:137)] Sources seqGenSrc

2013-09-04 07:55:22,674 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.isValid(FlumeConfiguration.java:313)] Starting validation of configuration for agent: agent1, initial-configuration: AgentConfiguration[agent1]
SOURCES: {avro-source1={ parameters:{port=41414, channels=ch1, type=avro, bind=0.0.0.0} }}
CHANNELS: {ch1={ parameters:{type=memory} }}
SINKS: {hdfs-sink={ parameters:{hdfs.fileType=DataStream, hdfs.path=hdfs://localhost:9000/flume/flumehdfs/, hdfs.batchSize=1000, hdfs.rollInterval=600, hdfs.rollSize=0, hdfs.writeFormat=Text, type=hdfs, hdfs.rollCount=10000, channel=ch1} }, log-sink1={ parameters:{type=logger, channel=ch1} }}

2013-09-04 07:55:22,675 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.validateChannels(FlumeConfiguration.java:468)] Created channel ch1
2013-09-04 07:55:22,677 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.validateSinks(FlumeConfiguration.java:674)] Creating sink: hdfs-sink using HDFS
2013-09-04 07:55:22,678 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.validateSinks(FlumeConfiguration.java:674)] Creating sink: log-sink1 using LOGGER
2013-09-04 07:55:22,679 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration$AgentConfiguration.isValid(FlumeConfiguration.java:371)] Post validation configuration for agent1
AgentConfiguration created without Configuration stubs for which only basic syntactical validation was performed[agent1]
SOURCES: {avro-source1={ parameters:{port=41414, channels=ch1, type=avro, bind=0.0.0.0} }}
CHANNELS: {ch1={ parameters:{type=memory} }}
SINKS: {hdfs-sink={ parameters:{hdfs.fileType=DataStream, hdfs.path=hdfs://localhost:9000/flume/flumehdfs/, hdfs.batchSize=1000, hdfs.rollInterval=600, hdfs.rollSize=0, hdfs.writeFormat=Text, type=hdfs, hdfs.rollCount=10000, channel=ch1} }}
AgentConfiguration created with Configuration stubs for which full validation was performed[agent1]
SINKS: {log-sink1=ComponentConfiguration[log-sink1]
  CONFIG: 
    CHANNEL:ch1
}

2013-09-04 07:55:22,679 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:135)] Channels:ch1

2013-09-04 07:55:22,679 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:136)] Sinks hdfs-sink log-sink1

2013-09-04 07:55:22,679 (conf-file-poller-0) [DEBUG - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:137)] Sources avro-source1

2013-09-04 07:55:22,680 (conf-file-poller-0) [INFO - org.apache.flume.conf.FlumeConfiguration.validateConfiguration(FlumeConfiguration.java:140)] Post-validation flume configuration contains configuration for agents: [agent, agent1]
2013-09-04 07:55:22,680 (conf-file-poller-0) [INFO - org.apache.flume.node.AbstractConfigurationProvider.loadChannels(AbstractConfigurationProvider.java:150)] Creating channels
2013-09-04 07:55:22,691 (conf-file-poller-0) [INFO - org.apache.flume.channel.DefaultChannelFactory.create(DefaultChannelFactory.java:40)] Creating instance of channel ch1 type memory
2013-09-04 07:55:22,699 (conf-file-poller-0) [INFO - org.apache.flume.node.AbstractConfigurationProvider.loadChannels(AbstractConfigurationProvider.java:205)] Created channel ch1
2013-09-04 07:55:22,700 (conf-file-poller-0) [INFO - org.apache.flume.source.DefaultSourceFactory.create(DefaultSourceFactory.java:39)] Creating instance of source avro-source1, type avro
2013-09-04 07:55:22,733 (conf-file-poller-0) [INFO - org.apache.flume.sink.DefaultSinkFactory.create(DefaultSinkFactory.java:40)] Creating instance of sink: log-sink1, type: logger
2013-09-04 07:55:22,736 (conf-file-poller-0) [INFO - org.apache.flume.sink.DefaultSinkFactory.create(DefaultSinkFactory.java:40)] Creating instance of sink: hdfs-sink, type: hdfs
2013-09-04 07:55:22,985 (conf-file-poller-0) [INFO - org.apache.flume.sink.hdfs.HDFSEventSink.authenticate(HDFSEventSink.java:493)] Hadoop Security enabled: false
2013-09-04 07:55:22,989 (conf-file-poller-0) [INFO - org.apache.flume.node.AbstractConfigurationProvider.getConfiguration(AbstractConfigurationProvider.java:119)] Channel ch1 connected to [avro-source1, log-sink1, hdfs-sink]
2013-09-04 07:55:22,996 (conf-file-poller-0) [INFO - org.apache.flume.node.Application.startAllComponents(Application.java:138)] Starting new configuration:{ sourceRunners:{avro-source1=EventDrivenSourceRunner: { source:Avro source avro-source1: { bindAddress: 0.0.0.0, port: 41414 } }} sinkRunners:{hdfs-sink=SinkRunner: { policy:org.apache.flume.sink.DefaultSinkProcessor@709446e4 counterGroup:{ name:null counters:{} } }, log-sink1=SinkRunner: { policy:org.apache.flume.sink.DefaultSinkProcessor@16ba5c7a counterGroup:{ name:null counters:{} } }} channels:{ch1=org.apache.flume.channel.MemoryChannel{name: ch1}} }
2013-09-04 07:55:23,011 (conf-file-poller-0) [INFO - org.apache.flume.node.Application.startAllComponents(Application.java:145)] Starting Channel ch1
2013-09-04 07:55:23,064 (lifecycleSupervisor-1-0) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.register(MonitoredCounterGroup.java:110)] Monitoried counter group for type: CHANNEL, name: ch1, registered successfully.
2013-09-04 07:55:23,064 (lifecycleSupervisor-1-0) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.start(MonitoredCounterGroup.java:94)] Component type: CHANNEL, name: ch1 started
2013-09-04 07:55:23,065 (conf-file-poller-0) [INFO - org.apache.flume.node.Application.startAllComponents(Application.java:173)] Starting Sink hdfs-sink
2013-09-04 07:55:23,066 (conf-file-poller-0) [INFO - org.apache.flume.node.Application.startAllComponents(Application.java:173)] Starting Sink log-sink1
2013-09-04 07:55:23,068 (conf-file-poller-0) [INFO - org.apache.flume.node.Application.startAllComponents(Application.java:184)] Starting Source avro-source1
2013-09-04 07:55:23,069 (lifecycleSupervisor-1-3) [INFO - org.apache.flume.source.AvroSource.start(AvroSource.java:192)] Starting Avro source avro-source1: { bindAddress: 0.0.0.0, port: 41414 }...
2013-09-04 07:55:23,069 (lifecycleSupervisor-1-1) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.register(MonitoredCounterGroup.java:110)] Monitoried counter group for type: SINK, name: hdfs-sink, registered successfully.
2013-09-04 07:55:23,069 (lifecycleSupervisor-1-1) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.start(MonitoredCounterGroup.java:94)] Component type: SINK, name: hdfs-sink started
2013-09-04 07:55:23,078 (SinkRunner-PollingRunner-DefaultSinkProcessor) [DEBUG - org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:143)] Polling sink runner starting
2013-09-04 07:55:23,079 (SinkRunner-PollingRunner-DefaultSinkProcessor) [DEBUG - org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:143)] Polling sink runner starting
2013-09-04 07:55:23,458 (lifecycleSupervisor-1-3) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.register(MonitoredCounterGroup.java:110)] Monitoried counter group for type: SOURCE, name: avro-source1, registered successfully.
2013-09-04 07:55:23,462 (lifecycleSupervisor-1-3) [INFO - org.apache.flume.instrumentation.MonitoredCounterGroup.start(MonitoredCounterGroup.java:94)] Component type: SOURCE, name: avro-source1 started
2013-09-04 07:55:23,464 (lifecycleSupervisor-1-3) [INFO - org.apache.flume.source.AvroSource.start(AvroSource.java:217)] Avro source avro-source1 started.

但是当某个事件发生时，flume日志中会出现以下错误，并且没有任何内容写入hdfs。

ERROR - org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:422)] process failed
java.lang.NoSuchMethodError: org.apache.hadoop.util.Shell.getGROUPS_COMMAND()[Ljava/lang/String;
    at org.apache.hadoop.security.UnixUserGroupInformation.getUnixGroups(UnixUserGroupInformation.java:345)
    at org.apache.hadoop.security.UnixUserGroupInformation.login(UnixUserGroupInformation.java:264)
    at org.apache.hadoop.security.UnixUserGroupInformation.login(UnixUserGroupInformation.java:300)
    at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:192)
    at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:170)
    at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82)
    at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1792)
    at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:76)
    at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:1826)
    at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1808)
    at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:265)
    at org.apache.hadoop.fs.Path.getFileSystem(Path.java:190)
    at org.apache.flume.sink.hdfs.BucketWriter$1.call(BucketWriter.java:226)
    at org.apache.flume.sink.hdfs.BucketWriter$1.call(BucketWriter.java:220)
    at org.apache.flume.sink.hdfs.BucketWriter$8$1.run(BucketWriter.java:536)
    at org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:160)
    at org.apache.flume.sink.hdfs.BucketWriter.access$1000(BucketWriter.java:56)
    at org.apache.flume.sink.hdfs.BucketWriter$8.call(BucketWriter.java:533)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
    at java.util.concurrent.FutureTask.run(FutureTask.java:166)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:679)

我缺少一些配置或jar文件？

hadoopflume

3条答案

按热度按时间
uujelgoq

uujelgoq1#

对于那些正在使用hdp2.2和flume 1.4的用户，您会收到一个类似这样的错误：我只是通过将/flume/lib中的hadoop-common.jar替换为/usr/hdp/folder中的更新版本来修复它（您的路径可能会有所不同）

赞(0）分享  回复(0）举报  2021-06-03
hc8w905p

hc8w905p2#

我最近正在排除一个类似的（虽然不是完全相同的）问题，我想起两个解决方案，可能会帮助您。
首先，您运行的是一个非常旧的hadoop版本。它目前的（稳定）版本是1.2.1，0.20.2于2010年2月发布。我记得我遇到过一个线程，其中一个用户在0.2x.x上遇到了类似的问题，建议他升级。
我的问题最终通过安装正确的java版本得到了解决。我认为需要JDK1.6或更高版本（至少对于hadoop的较新版本是这样）。对于centos，“yum install java-1.6.0-openjdk-devel”完美地修复了我。
很抱歉，我现在不能提供更多。我会尽量找到我之前读过的相关帖子，然后再回复，但同时也许这会给你一个开始的地方。如果没有其他问题，请回复您的java版本，也许这将有助于进一步的故障排除。

赞(0）分享  回复(0）举报  2021-06-03
rkkpypqq

rkkpypqq3#

这些是我为解决问题而添加的jar：

hadoop-core-1.0.4.jar
commons-configuration-1.6.jar
commons-httpclient-3.0.1.jar
jets3t-0.6.1.jar
commons-codec-1.4.jar

注意：在使用hadoop1.2.1时，我不需要添加任何额外的jar

赞(0）分享  回复(0）举报  2021-06-03
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