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From "Aljoscha Krettek (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-1628) Flink runner: logic around --flinkMaster is error-prone
Date Mon, 06 Mar 2017 07:40:32 GMT

    [ https://issues.apache.org/jira/browse/BEAM-1628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15896841#comment-15896841
] 

Aljoscha Krettek commented on BEAM-1628:
----------------------------------------

+1 agreed, this would be a good fix.

> Flink runner: logic around --flinkMaster is error-prone
> -------------------------------------------------------
>
>                 Key: BEAM-1628
>                 URL: https://issues.apache.org/jira/browse/BEAM-1628
>             Project: Beam
>          Issue Type: Bug
>          Components: runner-flink
>            Reporter: Davor Bonaci
>            Assignee: Aljoscha Krettek
>            Priority: Minor
>              Labels: newbie, starter
>
> The logic for handling {{--flinkMaster}} seems not particularly user-friendly.
> https://github.com/apache/beam/blob/fbcde4cdc7d68de8734bf540c079b2747631a854/runners/flink/runner/src/main/java/org/apache/beam/runners/flink/FlinkPipelineExecutionEnvironment.java#L132
> {code}
>     if (masterUrl.equals("[local]")) {
>     } else if (masterUrl.equals("[collection]")) {
>     } else if (masterUrl.equals("[auto]")) {
>     } else if (masterUrl.matches(".*:\\d*")) {
>     } else {
>       // use auto.
>     }
> {code}
> The options are constructed with "auto" set as default.
> I think we should do the following:
> * I assume there's a default port for the Flink master. We should default to it.
> * We should treat a string without a colon as a host name. (Not default to local execution.)
> This is super easy fix, hopefully someone can pick it up quickly ;-)



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