org.apache.hadoop.dfs
Class SecondaryNameNode.GetImageServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.apache.hadoop.dfs.SecondaryNameNode.GetImageServlet

All Implemented Interfaces:

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

Enclosing class:

SecondaryNameNode

public static class SecondaryNameNode.GetImageServlet
extends javax.servlet.http.HttpServlet

This class is used in Namesystem's jetty to retrieve a file. Typically used by the Secondary NameNode to retrieve image and edit file for periodic checkpointing.

Author:

Dhruba Borthakur

See Also:

Serialized Form

Constructor Summary

SecondaryNameNode.GetImageServlet()

Method Summary

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

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

SecondaryNameNode.GetImageServlet

public SecondaryNameNode.GetImageServlet()

Method Detail

doGet

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

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException