The tracking url will error if the application has completed or if you are 
running yarn client mode (that hasn't bee hooked up) .  In yarn client mode you 
can get url for UI via the messages that come out on the console.

In yarn-client mode, are you setting the environment variables to ask for 
workers, etc.  Also make sure the hadoop conf directory is in your classpath.

Tom



On Thursday, January 23, 2014 7:12 PM, DB Tsai <[email protected]> wrote:
 
Hi guys,

We were able to submit our spark application to yarn's resource manager 
(PivotalHD 1.0.1), and the expected result is printed in the stdout of the 
container log; however, when we took a look at Tracking UI, we got the 
following error 500. There is no problem for traditional mapreduce job. Is 
there any suggestion to dig into this problem?

Secondly, we submitted our job through our java app, and since the application 
is actually running on the remote machine, it seems that there is no easy way 
to interact between our main application running locally, and the spark 
application running remotely. For example, if we would like to know the 
progress of our spark application, we have to write it to HDFS, and then read 
it back in our main application. It's the same to retrieve the final spark job 
return. Is there any way to interact through some kind of api without going 
through the HDFS?

Finally, sometimes, we would like to test some code quickly through 
spark-shell. And it seems that every operation is running locally when we lunch 
spark-shell in yarn-client mode (I knew it's not supported to run spark-shell 
in yarn-standalone mode). Is there anyway to make spark-shell running in the 
distributed fashion with yarn?

Thanks.
HTTP ERROR 500
Problem accessing /proxy/application_1389853114516_1011/. Reason:
Server Error
Caused by:
java.io.IOException: java.net.URISyntaxException: Expected authority at index 
7: http:// at 
org.apache.hadoop.yarn.server.webproxy.WebAppProxyServlet.doGet(WebAppProxyServlet.java:318)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at 
javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at 
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:652) at 
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1320)
 



Sincerely,

DB Tsai
Machine Learning Engineer
Alpine Data Labs
--------------------------------------
Web: http://alpinenow.com/

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