It's used in scripts like sbin/start-master.sh On Fri, Oct 16, 2015 at 5:01 PM, Nicholas Chammas < nicholas.cham...@gmail.com> wrote:
> I'd look into tracing a possible bug here, but I'm not sure where to look. > Searching the codebase for `SPARK_MASTER_IP`, amazingly, does not show it > being used in any place directly by Spark > <https://github.com/apache/spark/search?utf8=%E2%9C%93&q=SPARK_MASTER_IP>. > > Clearly, Spark is using this environment variable (otherwise I wouldn't > see the behavior described in my first email), but I can't see where. > > Can someone give me a pointer? > > Nick > > On Thu, Oct 15, 2015 at 12:37 AM Ted Yu <yuzhih...@gmail.com> wrote: > >> Some old bits: >> >> >> http://stackoverflow.com/questions/28162991/cant-run-spark-1-2-in-standalone-mode-on-mac >> http://stackoverflow.com/questions/29412157/passing-hostname-to-netty >> >> FYI >> >> On Wed, Oct 14, 2015 at 7:10 PM, Nicholas Chammas < >> nicholas.cham...@gmail.com> wrote: >> >>> I’m setting the Spark master address via the SPARK_MASTER_IP >>> environment variable in spark-env.sh, like spark-ec2 does >>> <https://github.com/amplab/spark-ec2/blob/a990752575cd8b0ab25731d7820a55c714798ec3/templates/root/spark/conf/spark-env.sh#L13> >>> . >>> >>> The funny thing is that Spark seems to accept this only if the value of >>> SPARK_MASTER_IP is a DNS name and not an IP address. >>> >>> When I provide an IP address, I get errors in the log when starting the >>> master: >>> >>> 15/10/15 01:47:31 ERROR NettyTransport: failed to bind to >>> /54.210.XX.XX:7077, shutting down Netty transport >>> >>> (XX is my redaction of the full IP address.) >>> >>> Am I misunderstanding something about how to use this environment >>> variable? >>> >>> The spark-env.sh template indicates that either an IP address or a >>> hostname should work >>> <https://github.com/apache/spark/blob/4ace4f8a9c91beb21a0077e12b75637a4560a542/conf/spark-env.sh.template#L49>, >>> but my testing shows that only hostnames work. >>> >>> Nick >>> >>> >> >>
