hadoop web interface

Hadoop cluster configuration completed, the Web monitoring interface 50070 and 50030 ports without user authentication can be accessed, the production environment is not allowed, need to add security mechanisms.Experimental environment: Os:centos 6.5 x64, Soft:hadoop 1.2.11, modify the Core-site.xml, add the following, the configuration is completed after the cop

1. Start Hadoop. Then Netstat-nltp|grep 50070, if the process is not found, the port modification without configuring the Web interface is hdfs-site,xml with the following configurationIf you use the hostname: port number, go first to check the hostname under/etc/hosts IP, whether configured and your current IP is the same, and then restart Hadoop2. Now in the vi

(about 5 speak)· Sqoop principle· Sqoop use of the detailed• Use Sqoop to achieve hdfs/hive data interaction with relational databases• Use Sqoop to implement HBase's data interaction with relational databasesFourth chapter (about 8 Speak)· HBase principle· HBase System Architecture· HBase storage mechanism· HBase Basic Usage· HBase table design ideas and solutions• Common Application Scenarios• Interacting with Hive· Java Access, web developmentThe

IntroductionThis document describes how to configure the Hadoop HTTP Web console to require user authentication.by default, The Hadoop HTTP Web Console (Jobtracker, NameNode, Tasktrackers, and Datanodes) does not require any authentication to allow access.Similar to Hadoop R

72013sourcesdrwxr-xr-x.2 67974usersnbsP;409610 Month 72013templatesdrwxr-xr-x.767974users 409610 Month NBSP;NBSP;7NBSP;2013NBSP;WEBAPPS[[EMAILNBSP;PROTECTED]NBSP;HDFS]#NBSP;CP *.jar/root/workspace/hadoop/lib/ #导入hdfs相关的jar包 [[emailprotected]hdfs]#Well, the development needs of the jar package has been put into the projectGo back to the Eclipse interface, refresh the project, and refresh the jar. Because it

Configuration The following properties should is in the core-site.xml of all the nodes in the cluster. Hadoop.http.filter.initializers:add to the Org.apache.hadoop.security.AuthenticationFilterInitializer Initializer class. Hadoop.http.authentication.type:Defines authentication used for the HTTP web-consoles. The Supported values Are:simple | Kerberos | #AUTHENTICATION_HANDLER_CLASSNAME #. The Dfeault value is simple. Hadoop.http.authentic

Multiple interfaces are available to access HDFS. The command line interface is the simplest and the most familiar method for programmers. In this example, HDFS in pseudo sodistributed mode is used to simulate a distributed file system. For more information about how to configure the pseudo-distributed mode, see configure: This means that the default file system of hadoop is HDFS. At the end of this section

-input-output in front, behind the use of-d,-libjars does not work.Examples of Use:Jar_name=/home/hadoop/workspace/myhadoop/target/myhadoop-0.0.1-snapshot.jarMain_class=chapter3. Wordcountwithtoolsinput_dir=/data/input/output_dir=/data/output/Hadoop jar $JAR _name $MAIN _class-dtest=lovejava $INPUT _dir $OUTPUT _dirTest the value of the passed test property in your code.Jar_name=/home/

Hadoop has an abstract file system concept, and HDFs is just one of the implementations, Java abstract class Org.apache.hadoop.fs.FileSystem defines a filesystem interface in Hadoop, which is a filesystem that implements this interface, as well as other file system implementations, such as the local file system and Raw

Operation of the Java interface on the Hadoop cluster Start with a configured Hadoop cluster This is what I implemented in the test class of the project that I built in the SSM framework. One, under Windows configuration environment variable download file and unzip to C drive or other directory.Link: http://pan.baidu.com/s/1jHHPElg Password: AUF

OutputFormat is primarily used to describe the format of the output data, which is capable of writing user-supplied key/value to files in a particular format. This article describes how Hadoop designs the OutputFormat interface, as well as some common OutputFormat implementations.1. OutputFormat parsing of Legacy APIs, in the Legacy API, OutputFormat is an interface