[SPARK-22444][core] Spark History Server missing /environment endpoint/api #19655
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What changes were proposed in this pull request?
Spark History Server REST API is missing the /environment endpoint. This endpoint is otherwise available in Spark 2.x however it's missing from 1.6.x.
Since the environment endpoint provides programmatic access to critical launch parameters it would be great to have this back ported.
This feature was contributed under: https://issues.apache.org/jira/browse/SPARK-16122
How was this patch tested?
Will update this shortly!
(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
Please review http://spark.apache.org/contributing.html before opening a pull request.