org.apache.hadoop.hdfs.server.namenode

Class FsckServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.apache.hadoop.hdfs.server.namenode.FsckServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

@InterfaceAudience.Private
public class FsckServlet
extends javax.servlet.http.HttpServlet

This class is used in Namesystem's web server to do fsck on namenode.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FsckServlet()

Method Summary

Methods

Modifier and Type	Method and Description
protected ClientProtocol	createNameNodeProxy() Create a NameNode proxy from the current ServletContext.
void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Handle fsck request
protected UserGroupInformation	getUGI(javax.servlet.http.HttpServletRequest request, Configuration conf)
protected void	writeXml(Exception except, String path, org.znerd.xmlenc.XMLOutputter doc) Write the object to XML format

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FsckServlet

public FsckServlet()

Method Detail

doGet

public void doGet(javax.servlet.http.HttpServletRequest request,
         javax.servlet.http.HttpServletResponse response)
           throws IOException

Handle fsck request

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

IOException

writeXml

protected void writeXml(Exception except,
            String path,
            org.znerd.xmlenc.XMLOutputter doc)
                 throws IOException

Write the object to XML format

Throws:

IOException

createNameNodeProxy

protected ClientProtocol createNameNodeProxy()
                                      throws IOException

Create a NameNode proxy from the current ServletContext.

Throws:

IOException

getUGI

protected UserGroupInformation getUGI(javax.servlet.http.HttpServletRequest request,
                          Configuration conf)
                               throws IOException

Throws:

IOException