[jira] [Created] (SPARK-5113) Audit and document use of hostnames and IP addresses in Spark

["Patrick Wendell (JIRA)" <ji...@apache.org>]

Patrick Wendell created SPARK-5113:
--------------------------------------

             Summary: Audit and document use of hostnames and IP addresses in Spark
                 Key: SPARK-5113
                 URL: https://issues.apache.org/jira/browse/SPARK-5113
             Project: Spark
          Issue Type: Bug
            Reporter: Patrick Wendell
            Priority: Critical


Spark has multiple network components that start servers and advertise their network addresses to other processes.

We should go through each of these components and make sure they have consistent and/or documented behavior wrt (a) what interface(s) they bind to and (b) what hostname they use to advertise themselves to other processes. We should document this clearly and explain to people what to do in different cases (e.g. EC2, dockerized containers, etc).

When Spark initializes, it will search for a network interface until it finds one that is not a loopback address. Then it will do a reverse DNS lookup for a hostname associated with that interface. Then the network components will use that hostname to advertise the component to other processes. In some cases, that hostname is used as the bind interface also (e.g. I think this happens in the connection manager and possibly akka). In other cases (the web UI and netty shuffle) we seem to bind to all interfaces.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org