[jira] [Created] (FLINK-14561) Don't write FLINK_PLUGINS_DIR ENV variable to Flink configuration

["Till Rohrmann (Jira)" <ji...@apache.org>]

Till Rohrmann created FLINK-14561:
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             Summary: Don't write FLINK_PLUGINS_DIR ENV variable to Flink configuration
                 Key: FLINK-14561
                 URL: https://issues.apache.org/jira/browse/FLINK-14561
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.9.1, 1.10.0
            Reporter: Till Rohrmann
            Assignee: Till Rohrmann
             Fix For: 1.10.0, 1.9.2


With FLINK-12143 we introduced the plugin mechanism. As part of this feature, we now write the {{FLINK_PLUGINS_DIR}} environment variable to the Flink {{Configuration}} we use for the cluster components. This is problematic, because we also use this {{Configuration}} to start new processes (Yarn and Mesos {{TaskExecutors}}). If the {{Configuration}} contains a configured {{FLINK_PLUGINS_DIR}} which differs from the one used by the newly created process, then this leads to problems.

In order to solve this problem, I suggest to not write env variables which are intended for local usage within the started process into the {{Configuration}}. Instead we should directly read the environment variable at the required site similar to what we do with the env variable {{FLINK_LIB_DIR}}.



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