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From Philip Zeyliger <phi...@cloudera.com>
Subject Why does the Hive CLI start a subprocess?
Date Thu, 03 Dec 2009 01:27:23 GMT
Hi folks,

I notice that Hive's hive.ql.exec.MapRedTask calls out to a subprocess
("executor = Runtime.getRuntime().exec(cmdLine);") to run MR tasks.
Out of curiosity, what's the motivation?  It seems (naively, I'm sure)
that you could start the MR from within the same JVM.

Thanks,

-- Philip

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