Guowei Ma created FLINK-14991:
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Summary: Export `FLINK_HOME` environment variable to all the
entrypoint
Key: FLINK-14991
URL: https://issues.apache.org/jira/browse/FLINK-14991
Project: Flink
Issue Type: Improvement
Components: Runtime / Coordination
Reporter: Guowei Ma
Currently, Flink depends on 6 types of files: configuration files, system jars
files, script files、library jar files, plugin jar files, and user jars files.
These files are in different directories.
Flink exports 5 environment variables to locate these different type files:
`FLINK_CONF_DIR`,`FLINK_LIB_DIR`,`FLINK_OPT_DIR`,`FLINK_PLUGIN_DIR`,`FLINK_BIN_DIR`.
It is not a good style that exports an environment variable for every type of
file.
So this jira proposes to export the `FLINK_HOME` environment variable to all
the entrypoint. Derive the directory of the different type files from the
`FLINK_HOME` environment variable and every type file has a fixed directory
name.
This also has another benefit that the method implies the directory structure
is the same in all the situations.
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