[jira] [Assigned] (FLINK-3434) Return value from flinkYarnClient#deploy() should be checked against null

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chesnay Schepler reassigned FLINK-3434:
---------------------------------------

    Assignee: Chesnay Schepler

> Return value from flinkYarnClient#deploy() should be checked against null
> -------------------------------------------------------------------------
>
>                 Key: FLINK-3434
>                 URL: https://issues.apache.org/jira/browse/FLINK-3434
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Chesnay Schepler
>            Priority: Minor
>
> In CliFrontend#getClient() :
> {code}
>         yarnCluster = flinkYarnClient.deploy();
>         yarnCluster.connectToCluster();
> {code}
> Looking at FlinkYarnClientBase#deployInternal(), null return is possible:
> {code}
>     try {
>       org.apache.flink.core.fs.FileSystem.setDefaultScheme(flinkConfiguration);
>     } catch (IOException e) {
>       LOG.error("Error while setting the default " +
>         "filesystem scheme from configuration.", e);
>       return null;
>     }
> {code}
> We should check the return from deploy() before calling connectToCluster().



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