Eui Heo updated FLINK-14812:
    Labels:   (was: pull-request-available)

> Add custom libs to Flink classpath with an environment variable.
> ----------------------------------------------------------------
>                 Key: FLINK-14812
>                 URL: https://issues.apache.org/jira/browse/FLINK-14812
>             Project: Flink
>          Issue Type: New Feature
>          Components: Deployment / Kubernetes, Deployment / Scripts
>            Reporter: Eui Heo
>            Priority: Major
>          Time Spent: 20m
>  Remaining Estimate: 0h
> To use plugin library you need to add it to the flink classpath. The 
> documentation explains to put the jar file in the lib path.
> https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/metrics.html#prometheus-orgapacheflinkmetricsprometheusprometheusreporter
> However, to deploy metric-enabled Flinks on a kubernetes cluster, we have the 
> burden of creating and managing another container image. It would be more 
> efficient to add the classpath using environment variables inside the 
> constructFlinkClassPath function in the config.sh file.
> In particular, it seems inconvenient for me to create a separate image to use 
> the jars, even though the /opt/ flink/opt of the stock image already contains 
> them.
> For example, there are metrics libs and file system libs:
> flink-azure-fs-hadoop-1.9.1.jar
> flink-s3-fs-hadoop-1.9.1.jar
> flink-metrics-prometheus-1.9.1.jar
> flink-metrics-influxdb-1.9.1.jar

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