Eclipse accesses HDFS File System Resources

1 make sure that eclipse has installed the hadoop-eclipse-plugin-1.0.2.jar plug-in

2. Select MAP/reduce in eclipse

Right-click map/reduce locations and choose new hadoop locations.

Note:

The MAP/reduce port is the mapred-site.xml in the hadoop configuration file

<Name> mapred. Job. Tracker </Name>

The port of the DFS master is in the core-site.xml in the hadoop configuration file

<Name> fs. Default. Name </Name> value

After submission: The following results are displayed on the left:

OK. Then, you can view the HDFS file information through eclipse.

But, just so, the loss can not upload files through eclipse, this is because the hadoop configuration hdfs-site.xml has a field not modified:

Modify the hadoop configuration file CONF/hdfs-core.xml on the server, locate the DFS. Permissions configuration item, and change the value to false

<Property>
<Name> DFS. Permissions </Name>
<Value> false </value>
<Description>

Restart hadoop

The last step is to execute the hadoop program on Eclipse and your permissions are insufficient. This is caused by a package in hadoop: the solution is as follows:

# Bin/hadoop dfsadmin-safemode leave

Http://www.blogjava.net/yongboy/archive/2012/04/26/376486.html

That is, modify the checkreturnvalue in/hadoop-1.0.2/src/CORE/org/Apache/hadoop/fs/fileutil. Java, and comment it out (some rough, in the window, you do not need to check ).