"Bad File Descriptor" in closing local file

Running the sort benchmark, I had a map fail with this exception:

2006-11-28 17:59:36,770 INFO org.apache.hadoop.mapred.TaskInProgress: Error from task_0001_m_001906_0: Map output lost, rescheduling: getMapOutput(task_0001_m_001906_0,786) failed :
java.io.IOException: Bad file descriptor
at java.io.FileInputStream.close0(Native Method)
at java.io.FileInputStream.close(FileInputStream.java:245)
at org.apache.hadoop.fs.LocalFileSystem$LocalFSFileInputStream.close(LocalFileSystem.java:100)
at java.io.FilterInputStream.close(FilterInputStream.java:159)
at org.apache.hadoop.fs.FSDataInputStream$Checker.close(FSDataInputStream.java:162)
at java.io.FilterInputStream.close(FilterInputStream.java:159)
at java.io.BufferedInputStream.close(BufferedInputStream.java:440)
at java.io.FilterInputStream.close(FilterInputStream.java:159)
at org.apache.hadoop.mapred.TaskTracker$MapOutputServlet.doGet(TaskTracker.java:1446)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:427)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:475)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1565)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:635)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1517)
at org.mortbay.http.HttpServer.service(HttpServer.java:954)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:814)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:981)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:831)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:244)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)