Github user ArtRand commented on the issue:
https://github.com/apache/spark/pull/19515
Hello @pmackles, thanks for this. It would be set to the value of
`SPARK_DRIVER_MEMORY` by default correct? What to you think about introducing a
new envvar (`SPARK_DISPATCHER_MEMORY`) so that it can be individually
configured? Only motivated by the fact that the Dispatcher is a pretty unique
beast compared to the other Spark daemons.
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