Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/7345#issuecomment-120515636
Hm, I only sort of understand the entirety of the logic, but
`Utils.localHostName` is what a lot of stuff consults to know what the local
host is, and the logic does return an IP address to be less ambiguous. That's
overrideable with `SPARK_LOCAL_HOSTNAME`. Yes, `--host` also overrides what
`Worker` uses for specific purposes like the RPC endpoint. Are you just worried
about the cosmetic effect? because this change does have functional
implications.
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