HyukjinKwon commented on a change in pull request #26429: [SPARK-29777][SparkR]
SparkR::cleanClosure aggressively removes a function required by user function
URL: https://github.com/apache/spark/pull/26429#discussion_r346100705
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File path: R/pkg/R/utils.R
##########
@@ -546,8 +546,11 @@ processClosure <- function(node, oldEnv, defVars,
checkedFuncs, newEnv) {
ifelse(identical(func, obj), TRUE, FALSE)
Review comment:
No biggie but I think it could be better to combine the condition into here:
```diff
--- a/R/pkg/R/utils.R
+++ b/R/pkg/R/utils.R
@@ -543,14 +543,15 @@ processClosure <- function(node, oldEnv, defVars,
checkedFuncs, newEnv) {
funcList <- mget(nodeChar, envir = checkedFuncs, inherits = F,
ifnotfound = list(list(NULL)))[[1]]
found <- sapply(funcList, function(func) {
- ifelse(identical(func, obj), TRUE, FALSE)
+ ifelse(
+ identical(func, obj) &&
+ # Also check if the parent environment is identical to
current parent
+ identical(parent.env(environment(func)), func.env),
+ TRUE, FALSE)
})
if (sum(found) > 0) {
- # If function has been examined
- if
(identical(parent.env(environment(funcList[found][[1]])), func.env)) {
- # If the parent environment is identical to current parent
- break
- }
+ # If function has been examined, ignore.
+ break
}
# Function has not been examined, record it and recursively
clean its closure.
assign(nodeChar,
```
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