hadoop - tasks keep running after job finished
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I running an hadoop cluster with 20 nodes.

I run a heavy job which uses a lot of memory.
for some reason it seems that some tasks get "out of touch" with the job.
why does it seem so?

1. I have a task timeout of 600 seconds. and these task run much more than that. I know so by looking at the java processes.

2. after the job is completed I still have map reduce processes running.

have anyone encounter such problem?
