[jira] [Commented] (HDFS-5345) NPE in block_info_xml JSP if the block has been deleted

[Steve Loughran (JIRA)]

    [ 
https://issues.apache.org/jira/browse/HDFS-5345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13792536#comment-13792536
 ] 

Steve Loughran commented on HDFS-5345:
--------------------------------------

{code}
HTTP ERROR 500

Problem accessing /block_info_xml.jsp. Reason:

    INTERNAL_SERVER_ERROR
Caused by:

java.lang.NullPointerException
        at 
org.apache.hadoop.hdfs.server.namenode.NamenodeJspHelper$XMLBlockInfo.<init>(NamenodeJspHelper.java:1036)
        at 
org.apache.hadoop.hdfs.server.namenode.block_005finfo_005fxml_jsp._jspService(block_005finfo_005fxml_jsp.java:122)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at 
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
        at 
org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter.doFilter(StaticUserWebFilter.java:109)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at 
org.apache.hadoop.http.HttpServer$QuotingInputFilter.doFilter(HttpServer.java:1081)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at org.apache.hadoop.http.NoCacheFilter.doFilter(NoCacheFilter.java:45)
        at 
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
        at 
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
        at 
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
        at 
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
        at 
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
        at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
        at 
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
        at 
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:326)
        at 
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
        at 
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
        at 
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
        at 
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
{code}

> NPE in block_info_xml JSP if the block has been deleted
> -------------------------------------------------------
>
>                 Key: HDFS-5345
>                 URL: https://issues.apache.org/jira/browse/HDFS-5345
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.2.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> If you ask for a block info report on a block that has been deleted, you see 
> a stack trace and a 500 error.
> Steps to replicae
> # create a file
> # browse to it
> # get the block info
> # delete the file
> # reload the block info page
> Maybe a 404 is the response to raise instead



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