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From Ted Dunning <tdunn...@maprtech.com>
Subject Re: Entropy Pool and HDFS FS Commands Hanging System
Date Tue, 04 Jan 2011 01:23:13 GMT
On Mon, Jan 3, 2011 at 4:48 PM, Jon Lederman <jon2718@gmail.com> wrote:

> Thanks.  Will try that.  One final question, based on the jstack output I
> sent, is it obvious that the system is blocked due to the behavior of
> /dev/random?

I tried to send you a highlighted markup of your jstack output.

The key thing to look for is some thread reading bytes that nests from

> If I just let the FS command run (i.e., hadoop fs -ls), is there any
> guarantee it will eventually return in some relatively finite period of time
> such as hours, or could it potentially take days, weeks, years or eternity?
It depends on how quiet your machine is.  If it has stuff happening, then it
will unwedge eventually.

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