[HADOOP-513] IllegalStateException is thrown by TaskTracker

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.7.0
• Assignee: Owen O'Malley
• Reporter: Konstantin Shvachko
• Created: 06/Sep/06 22:23
• Updated: 08/Jul/09 16:51
• Resolved: 29/Sep/06 20:53

Description

I am running TestDFSIO on a one node cluster and getting IllegalStateException for each map task run as listed below.
The same exceptions are flooding logs for TestMiniMRWithDFS on my nightly build for quite a while now.
Does anybody know what that is?
My understanding is that if it is "illegal", then tests should fail.
If not then it should be caught and ignored INTERNALLY.

06/09/06 14:54:50 INFO mapred.TaskTracker: task_0002_r_000000_0 0.25% reduce > copy (3 of 4 at 0.00 MB/s) >
06/09/06 14:54:50 INFO mapred.TaskRunner: task_0002_r_000000_0 Need 1 map output(s)
06/09/06 14:54:50 INFO mapred.TaskRunner: task_0002_r_000000_0 Got 1 known map output location(s); scheduling...
06/09/06 14:54:50 INFO mapred.TaskRunner: task_0002_r_000000_0 Scheduled 1 of 1 known outputs (0 slow hosts and 0 dup hosts)
06/09/06 14:54:50 INFO mapred.TaskRunner: task_0002_r_000000_0 Copying task_0002_m_000003_0 output from ENO.
06/09/06 14:54:50 WARN /: /getMapOutput.jsp?map=task_0002_m_000003_0&reduce=0:
java.lang.IllegalStateException
at org.mortbay.jetty.servlet.ServletHttpResponse.getWriter(ServletHttpResponse.java:561)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:122)
at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)
at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:190)
at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)
at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)
at org.apache.hadoop.mapred.getMapOutput_jsp._jspService(getMapOutput_jsp.java:100)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
at org.mortbay.http.HttpServer.service(HttpServer.java:954)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
06/09/06 14:54:50 INFO mapred.TaskRunner: task_0002_r_000000_0 done copying task_0002_m_000003_0 output from ENO.