dongjoon-hyun commented on a change in pull request #26757:
[SPARK-30121][Build] Fix memory usage in sbt build script
URL: https://github.com/apache/spark/pull/26757#discussion_r354107486
##########
File path: build/sbt
##########
@@ -66,7 +66,7 @@ Usage: $script_name [options]
-sbt-dir <path> path to global settings/plugins directory (default:
~/.sbt)
-sbt-boot <path> path to shared boot directory (default: ~/.sbt/boot in
0.11 series)
-ivy <path> path to local Ivy repository (default: ~/.ivy2)
- -mem <integer> set memory options (default: $sbt_mem, which is
$(get_mem_opts $sbt_mem))
+ -mem <integer> set memory options (default: $sbt_default_mem, which is
$(get_mem_opts $sbt_default_mem))
Review comment:
If this PR aims to resync with `SBT 1.3.4`, shall we remove `get_mem_opts`
function and `, which is $(get_mem_opts $sbt_default_mem)` part completely.
**SBT 0.13.18**
```
$ ./sbt -h | grep mem
-mem <integer> set memory options (default: 1024, which is -Xms1024m
-Xmx1024m -XX:ReservedCodeCacheSize=128m -XX:MaxMetaspaceSize=256m)
```
**SBT 1.3.4**
```
$ bin/sbt -h | grep mem
--mem <integer> set memory options (default: 1024)
```
SBT 1.3.4 doesn't have `get_mem_opts` at all.
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