org.apache.hadoop.gateway.hdfs.dispatch

Class HdfsDispatch

java.lang.Object

org.apache.hadoop.gateway.filter.AbstractGatewayFilter

org.apache.hadoop.gateway.dispatch.AbstractGatewayDispatch

org.apache.hadoop.gateway.dispatch.HttpClientDispatch

org.apache.hadoop.gateway.hdfs.dispatch.HdfsDispatch

All Implemented Interfaces:

javax.servlet.Filter, Dispatch

Direct Known Subclasses:

WebHdfsHaHttpClientDispatch

public class HdfsDispatch
extends HttpClientDispatch

Field Summary

Fields inherited from class org.apache.hadoop.gateway.dispatch.HttpClientDispatch

AMP_DELEGATION_EQ, appCookieManager, auditor, COOKIE, LOG, NEGOTIATE, Q_DELEGATION_EQ, REPLAY_BUFFER_SIZE_PARAM, RES, SET_COOKIE, WWW_AUTHENTICATE

Fields inherited from class org.apache.hadoop.gateway.filter.AbstractGatewayFilter

SOURCE_REQUEST_CONTEXT_URL_ATTRIBUTE_NAME, SOURCE_REQUEST_URL_ATTRIBUTE_NAME, TARGET_REQUEST_URL_ATTRIBUTE_NAME, TARGET_SERVICE_ROLE

Constructor Summary

Constructors

Constructor and Description
HdfsDispatch()

Method Summary

Methods

Modifier and Type	Method and Description
protected org.apache.http.HttpEntity	createRequestEntity(javax.servlet.http.HttpServletRequest request) This method ensures that the request InputStream is not acquired prior to a dispatch to a component such as a namenode that doesn't the request body.

Methods inherited from class org.apache.hadoop.gateway.dispatch.HttpClientDispatch

addCredentialsToRequest, doDelete, doGet, doOptions, doPost, doPut, executeKerberosDispatch, executeOutboundRequest, executeRequest, getReplayBufferSize, init, init, setReplayBufferSize, writeOutboundResponse

Methods inherited from class org.apache.hadoop.gateway.dispatch.AbstractGatewayDispatch

copyRequestHeaderFields, doFilter, getDispatchUrl, writeResponse

Methods inherited from class org.apache.hadoop.gateway.filter.AbstractGatewayFilter

destroy, doFilter, getConfig

Methods inherited from class java.lang.Object

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

Constructor Detail

HdfsDispatch

public HdfsDispatch()
             throws javax.servlet.ServletException

Throws:

javax.servlet.ServletException

Method Detail

createRequestEntity

protected org.apache.http.HttpEntity createRequestEntity(javax.servlet.http.HttpServletRequest request)
                                                  throws IOException

This method ensures that the request InputStream is not acquired prior to a dispatch to a component such as a namenode that doesn't the request body. The side effect of this is that the client does not get a 100 continue from Knox which will trigger the client to send the entire payload before redirect to the target component like a datanode and have to send it again.

Overrides:

createRequestEntity in class HttpClientDispatch

Throws:

IOException