afterincomparableyum commented on code in PR #3583:
URL: https://github.com/apache/celeborn/pull/3583#discussion_r2786044297
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cpp/celeborn/client/reader/CelebornInputStream.cpp:
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@@ -189,9 +196,45 @@ void CelebornInputStream::moveToNextReader() {
std::shared_ptr<PartitionReader> CelebornInputStream::createReaderWithRetry(
const protocol::PartitionLocation& location) {
- // TODO: support retrying when createReader failed. Maybe switch to peer
- // location?
- return createReader(location);
+ const protocol::PartitionLocation* currentLocation = &location;
+ std::exception_ptr lastException;
+
+ while (fetchChunkRetryCnt_ < fetchChunkMaxRetry_) {
+ try {
+ VLOG(1) << "Create reader for location " << currentLocation->host << ":"
+ << currentLocation->fetchPort;
+ auto reader = createReader(*currentLocation);
+ fetchChunkRetryCnt_ = 0;
+ return reader;
+ } catch (const std::exception& e) {
+ lastException = std::current_exception();
+ fetchChunkRetryCnt_++;
+
+ if (currentLocation->hasPeer()) {
+ if (fetchChunkRetryCnt_ % 2 == 0) {
+ std::this_thread::sleep_for(
+ std::chrono::milliseconds(retryWait_.count()));
+ }
+ LOG(WARNING) << "CreatePartitionReader failed " << fetchChunkRetryCnt_
Review Comment:
looking into this....
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