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Posted to common-dev@hadoop.apache.org by "Hairong Kuang (JIRA)" <ji...@apache.org> on 2007/05/17 20:16:16 UTC

[jira] Created: (HADOOP-1383) Tasks fail due to lost mapout

Tasks fail due to lost mapout
-----------------------------

                 Key: HADOOP-1383
                 URL: https://issues.apache.org/jira/browse/HADOOP-1383
             Project: Hadoop
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.12.3
            Reporter: Hairong Kuang
             Fix For: 0.14.0


When I ran a job, each map task of which generates Gbytes of map output, I saw many tasks failed with following errors:
Map output lost, rescheduling: getMapOutput(task_0993_m_000013_0,140) failed :
java.io.FileNotFoundException: /hadoop/mapred/local/task_0993_m_000013_0/file.out
	at org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:332)
	at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:245)
	at org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:1657)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
	at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
	at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
	at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
	at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
	at org.mortbay.http.HttpServer.service(HttpServer.java:954)
	at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
	at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
	at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
	at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
	at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
	at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)

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