mridulm commented on code in PR #2462:
URL: https://github.com/apache/celeborn/pull/2462#discussion_r1568245018
##########
client/src/main/scala/org/apache/celeborn/client/ChangePartitionManager.scala:
##########
@@ -151,7 +156,7 @@ class ChangePartitionManager(
oldPartition,
cause)
- requests.synchronized {
+ locks(partitionId % locks.length).synchronized {
if (requests.containsKey(partitionId)) {
requests.get(partitionId).add(changePartition)
logTrace(s"[handleRequestPartitionLocation] For $shuffleId, request
for same partition" +
Review Comment:
The original code is doing the same.
```
if (requests.containsKey(partitionId)) {
requests.get(partitionId).add(changePartition)
} else {
// an early exit condition
val set = new util.HashSet[ChangePartitionRequest]()
set.add(changePartition)
requests.put(partitionId, set)
}
```
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