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https://issues.apache.org/jira/browse/FLINK-9560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16512181#comment-16512181
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ASF GitHub Bot commented on FLINK-9560:
---------------------------------------
Github user pnowojski commented on a diff in the pull request:
https://github.com/apache/flink/pull/6149#discussion_r195342365
--- Diff:
flink-core/src/main/java/org/apache/flink/core/fs/LimitedConnectionsFileSystem.java
---
@@ -313,14 +313,22 @@ public int getNumberOfOpenInputStreams() {
* Get the rate limitation on Input (bytes/s).
*/
public long getRateLimitingInput(){
- return (long) inputRateLimiter.getRate();
+ if (inputRateLimiter.isPresent()){
--- End diff --
Nitty nit (matter of taste): `return (long)
inputRateLimiter.map(RateLimiter::getRate).getOrDefault(0)` if you prefer
if/else I'm fine with that.
Btw, `Optional` saved the day. Previously there were some missed null
pointer exceptions :)
> RateLimiting for FileSystem
> ---------------------------
>
> Key: FLINK-9560
> URL: https://issues.apache.org/jira/browse/FLINK-9560
> Project: Flink
> Issue Type: Improvement
> Components: FileSystem
> Affects Versions: 1.5.0
> Reporter: Etienne CARRIERE
> Priority: Major
>
> *Pain*: On our system, we see that during checkpoint , all the bandwidth is
> take to send the checkpoint to object storage (s3 in our case)
> *Proposal* : After the creation of some limitation on Filesystem (mostly
> number of connections with the tickets FLINK-8125/FLINK-8198/FLINK-9468), I
> propose to add ratelimiting "per Filesystem" .
> *Proposal of implementation* : Modify LimitedConnectionsFileSystem to add a
> ratelimiter on both Input and OutputStream.
>
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