Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/1472#issuecomment-50700741
UPDATE: I had a conversation with @pwendell about this. We came to the
conclusion that there is really no benefit from having a mechanism to specify
an executor home, at least for standalone mode. Even if we have multiple
installations of Spark on the worker machines, we can pick which one to connect
to by simply specifying a different Master. In either case, we should just use
the Worker's current working directory as the executor's (or driver's, in the
case of standalone-cluster mode) Spark home.
I will make the relevant changes shortly. If I don't get to it by the 1.1
code freeze, we should just merge in #1392 instead.
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