Ngone51 commented on a change in pull request #32287:
URL: https://github.com/apache/spark/pull/32287#discussion_r620779976
##########
File path:
core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala
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@@ -613,6 +618,12 @@ final class ShuffleBlockFetcherIterator(
}
if (isNetworkReqDone) {
reqsInFlight -= 1
+ if (!buf.isInstanceOf[NettyManagedBuffer]) {
+ // Non-`NettyManagedBuffer` doesn't occupy Netty's memory so we
can unset the flag
+ // directly once the request succeeds. But for the
`NettyManagedBuffer`, we'll only
+ // unset the flag when the data is fully consumed (see
`BufferReleasingInputStream`).
+ NettyUtils.isNettyOOMOnShuffle = false
Review comment:
How about this:
```scala
if (Netty.freeMemory > minRequestSize) {
unset the flag
}
```
?
* `minRequestSize` supposed to be the minimize request size of all the
pending requests(or block?).
I think this would mitigate the situation you mentioned.
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