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https://issues.apache.org/jira/browse/FLINK-3434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Metzger resolved FLINK-3434.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.0.0
Resolved in http://git-wip-us.apache.org/repos/asf/flink/commit/0fb6e0dd
> 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
> Fix For: 1.0.0
>
>
> 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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