Hadoop-2.7.3常见问题解决

问题1：

提示如下信息：

 

Java HotSpot(TM) Client VM warning: You have loaded library /usr/local/hadoop/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c ', or link it with '-z noexecstack'.

 

解决方法：

 

修改$HADOOP_HOME/etc/hadoop路径当中的hadoop-env.sh文件。

加上下面两句话：

export HADOOP_COMMON_LIB_NATIVE_DIR=${HADOOP_HOME}/lib/native

export HADOOP_OPTS="-Djava.library.path=${HADOOP_HOME}/lib"

这里的${HADOOP_HOME}要写安装路径，如：

export HADOOP_COMMON_LIB_NATIVE_DIR=/usr/local/hadoop-2.7.3/lib/native

export HADOOP_OPTS="$HADOOP_OPTS -Djava.net.preferIPv4Stack=true -Djava.library.path=/usr/local/hadoop-2.7.3/lib"

 

问题2：

 

提示如下信息：

17/05/18 13:26:41 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

 

解决方法：

 

在$HADOOP_HOME/etc/hadoop路径中修改log4j.properties文件，加上下面一句话：

log4j.logger.org.apache.hadoop.util.NativeCodeLoader=ERROR

 

 

问题3：无法通过网页查看集群

 

在确定配置文件无误的前提下，无法通过网页查看集群状态。

确定是否开启了YARN，通过start-yarn.sh则可以开启。然后输入http://Master:8088/cluster可以查看集群。

 

通过http://Master:50070查看NameNode和DataNode状态，HDFS情况。

 

问题3：Java.io.IOException: No FileSystem for scheme: hdfs

 

1. Configuration conf = new Configuration();  
2. conf.set("fs.hdfs.impl",org.apache.hadoop.hdfs.DistributedFileSystem.class.getName());  //加上这句话即可
3. fs = FileSystem.get(new URI(HDFS_PATH), conf);  

 

 

 

问题4：

 

警告: Cannot load filesystem
java.util.ServiceConfigurationError: org.apache.hadoop.fs.FileSystem: Provider org.apache.hadoop.hdfs.web.WebHdfsFileSystem could not be instantiated
at java.util.ServiceLoader.fail(ServiceLoader.java:232)
at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
at org.apache.hadoop.fs.FileSystem.loadFileSystems(FileSystem.java:2631)
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2650)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2703)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2685)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:373)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:172)
at util.Utils.init(Utils.java:361)
at init.InitServlet.(InitServlet.java:28)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:120)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1041)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:980)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4819)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5129)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1425)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1415)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1425)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1415)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:657)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)
Caused by: java.lang.NoClassDefFoundError: org/codehaus/jackson/map/ObjectMapper
at org.apache.hadoop.hdfs.web.WebHdfsFileSystem.(WebHdfsFileSystem.java:129)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
... 49 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.jackson.map.ObjectMapper
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1269)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1104)
... 56 more


七月 06, 2017 12:27:10 下午 org.apache.hadoop.fs.FileSystem loadFileSystems
警告: Cannot load filesystem
java.util.ServiceConfigurationError: org.apache.hadoop.fs.FileSystem: Provider org.apache.hadoop.hdfs.web.SWebHdfsFileSystem could not be instantiated
at java.util.ServiceLoader.fail(ServiceLoader.java:232)
at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
at org.apache.hadoop.fs.FileSystem.loadFileSystems(FileSystem.java:2631)
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2650)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:94)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2703)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2685)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:373)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:172)
at util.Utils.init(Utils.java:361)
at init.InitServlet.(InitServlet.java:28)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:120)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1041)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:980)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4819)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5129)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1425)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1415)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1425)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1415)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:941)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.startup.Catalina.start(Catalina.java:657)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:355)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:495)
Caused by: java.lang.NoClassDefFoundError: org.apache.hadoop.hdfs.web.WebHdfsFileSystem
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
... 49 more

将$HADOOP_HOME/share/hadoop/common/lib目录下的

jackson-core-asl-1.9.13.jar

jackson-jaxrs-1.9.13.jar

jackson-mapper-asl-1.9.13.jar

jackson-xc-1.9.13.jar

4个jar包放到工程的lib目录下，然后add to buildpath

 

问题5：

java.lang.ClassNotFoundException: org.apache.htrace.SamplerBuilder

将$HADOOP_HOME/share/hadoop/common/lib目录下的htrace-core-3.1.0-incubating.jar拷贝到工程目录下的lib当中。

 

问题6：

启动集群时提示：

Desktop: Error: JAVA_HOME is not set and could not be found.
Server3: Error: JAVA_HOME is not set and could not be found.
Server1: Error: JAVA_HOME is not set and could not be found.

Server2: Error: JAVA_HOME is not set and could not be found.

先检查JAVA环境变量是否设置正确，再检查${HADOOP_HOME}/etc/hadoop/hadoop-env.sh文件

其中有一句

export JAVA_HOME=${JAVA_HOME}

修改为

expot JAVA_HOME=/usr/local/jdk1.8.0_111    即显式修改为java路径

 

问题7：

重复出现：

18/05/29 17:14:34 INFO mapred.ClientServiceDelegate: Application state is completed. FinalApplicationStatus=SUCCEEDED. Redirecting to job history server
18/05/29 17:14:35 INFO ipc.Client: Retrying connect to server: Desktop/192.168.244.3:10020. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
18/05/29 17:14:36 INFO ipc.Client: Retrying connect to server: Desktop/192.168.244.3:10020. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
18/05/29 17:14:37 INFO ipc.Client: Retrying connect to server: Desktop/192.168.244.3:10020. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

18/05/29 17:14:38 INFO ipc.Client: Retrying connect to server: Desktop/192.168.244.3:10020. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

解决方法：配置historyserver，执行：mr-jobhistory-daemon.sh start historyserver即可解决。

 

问题8：

Starting namenodes on [Master]
Master: starting namenode, logging to /usr/local/bigdata/hadoop-2.7.3/logs/hadoop-root-namenode-Master.out
Slave3: bash: /usr/local/bigdata/hadoop-2.7.3/sbin/hadoop-daemon.sh: Permission denied
Slave2: bash: /usr/local/bigdata/hadoop-2.7.3/sbin/hadoop-daemon.sh: Permission denied
Slave1: bash: /usr/local/bigdata/hadoop-2.7.3/sbin/hadoop-daemon.sh: Permission denied

解决方法：

（1）检查无密登录是否正常；

（2）如果无密登录可以，那么执行下面的语句

       sudo chmod 777 /usr/local/bigdata/hadoop-2.7.3/* -R