Hi DuanYu! Most likely, the MapTask class loaded is not from your jar file. Here's a look at how Oracle JAVA loads classes : http://docs.oracle.com/javase/8/docs/technotes/tools/findingclasses.html . Check the classpath that your MapTask is started with.
HTH Ravi On Fri, Aug 4, 2017 at 7:09 PM, duanyu teng <dyteng.x...@gmail.com> wrote: > Hi, > > I modify the MapTask.java file in order to output more log information. I > re-compile the file and deploy the jar to the whole clusters, but I found > that the output log has not changed, I don't know why. >
