我已经看到很多人在安装hadoop时遇到问题。我经历了所有相关的stackoverflow问题,但无法解决问题。
问题是 :
hdfs dfs -ls
16/09/27 09:43:42 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
ls: `.': No such file or directory
sudo update-alternatives --config java
There are 2 choices for the alternative java (providing /usr/bin/java).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/lib/jvm/java-9-openjdk-amd64/bin/java 1091 auto mode
1 /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java 1081 manual mode
2 /usr/lib/jvm/java-9-openjdk-amd64/bin/java 1091 manual mode
Press <enter> to keep the current choice[*], or type selection number:
/home/bhishan/hadoop-2.7.2/etc/hadoop/hadoop-env.sh export JAVA_HOME=/usr/lib/jvm/java-9-openjdk-amd64
/home/bhishan/hadoop-2.7.2/etc/hadoop/hdfs-site.xml <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> <property> <name>dfs.namenode.name.dir</name> <value>file:/home/bhishan/hadoop-2.7.2/etc/hadoop/hadoop_store/hdfs/namenode</value> </property> <property> <name>dfs.datanode.data.dir</name> <value>file:/home/bhishan/hadoop-2.7.2/etc/hadoop/hadoop_store/hdfs/datanode</value> </property>
/home/bhishan/hadoop-2.7.2/etc/hadoop/core-site.xml hadoop.tmp.dir
/home/bhishan/hadoop-2.7.2/tmp A base for other temporary directories.fs.default.name
hdfs://localhost:54310 The name of the default file system. A URI whose scheme and authority determine the FileSystem implementation. The uri's scheme determines the config property (fs.SCHEME.impl) naming the FileSystem implementation class. The uri's authority is used to determine the host, port, etc. for a filesystem.
/home/bhishan/hadoop-2.7.2/etc/hadoop/mapred-site.xml mapred.job.tracker
localhost:54311 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.
hdfs dfs -ls
16/09/26 23:53:14 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable ls: `.': No such file or directory
最佳答案
从这个错误:
hdfs dfs -ls
16/09/27 09:43:42 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
ls: `.': No such file or directory
hadoop fs -ls /
hadoop fs -mkdir -p /user/<your_user_name>
hadoop fs -ls
关于hadoop - hadoop错误:util.NativeCodeLoader(hdfs dfs -ls不起作用!),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39728216/
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