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java.lang.Objectjavax.servlet.GenericServlet
javax.servlet.http.HttpServlet
org.apache.hadoop.dfs.FileDataServlet
public class FileDataServlet
Redirect queries about the hosted filesystem to an appropriate datanode.
HftpFileSystem
,
Serialized FormConstructor Summary | |
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FileDataServlet()
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Method Summary | |
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void |
doGet(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
Service a GET request as described below. |
protected static DatanodeInfo |
pickSrcDatanode(org.apache.hadoop.dfs.DFSFileInfo i,
NameNode nn)
Select a datanode to service this request. |
Methods inherited from class javax.servlet.http.HttpServlet |
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doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service |
Methods inherited from class javax.servlet.GenericServlet |
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destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public FileDataServlet()
Method Detail |
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protected static DatanodeInfo pickSrcDatanode(org.apache.hadoop.dfs.DFSFileInfo i, NameNode nn) throws IOException
IOException
public void doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException
GET http://<nn>:<port>/data[/<path>] HTTP/1.1
doGet
in class javax.servlet.http.HttpServlet
javax.servlet.ServletException
IOException
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