Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16975#discussion_r101857385
--- Diff: core/src/main/scala/org/apache/spark/deploy/SparkSubmit.scala ---
@@ -466,7 +466,7 @@ object SparkSubmit extends CommandLineUtils {
// Other options
OptionAssigner(args.executorCores, STANDALONE | YARN,
ALL_DEPLOY_MODES,
sysProp = "spark.executor.cores"),
- OptionAssigner(args.executorMemory, STANDALONE | MESOS | YARN,
ALL_DEPLOY_MODES,
+ OptionAssigner(args.executorMemory, ALL_CLUSTER_MGRS,
ALL_DEPLOY_MODES,
--- End diff --
```
You may, for whatever reason, want to run executors with less than that,
which your change doesn't seem to allow.
```
Yeah, I thought about this long and hard but I just couldn't come up with a
case where you would possibly want the worker size to be different from
executor size in local-cluster mode. If you want two launch 5 workers (2GB),
each with 2 executors (1GB), then you might as well just launch 10 executors
(1GB) or run real standalone mode locally. I think it's better to fix the
out-of-the-box case than to try to cover all potentially non-existent corner
cases.
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