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zhijiang commented on FLINK-14163: ---------------------------------- In addition, no matter which way we take to solve this issue, I think we can make it ready in release-1.11, not a blocker for release-1.10. > Execution#producedPartitions is possibly not assigned when used > --------------------------------------------------------------- > > Key: FLINK-14163 > URL: https://issues.apache.org/jira/browse/FLINK-14163 > Project: Flink > Issue Type: Bug > Components: Runtime / Coordination > Affects Versions: 1.9.0, 1.10.0 > Reporter: Zhu Zhu > Priority: Major > Fix For: 1.10.0 > > > Currently {{Execution#producedPartitions}} is assigned after the partitions > have completed the registration to shuffle master in > {{Execution#registerProducedPartitions(...)}}. > The partition registration is an async interface > ({{ShuffleMaster#registerPartitionWithProducer(...)}}), so > {{Execution#producedPartitions}} is possible[1] not set when used. > Usages includes: > 1. deploying this task, so that the task may be deployed without its result > partitions assigned, and the job would hang. (DefaultScheduler issue only, > since legacy scheduler handled this case) > 2. generating input descriptors for downstream tasks: > 3. retrieve {{ResultPartitionID}} for partition releasing: > [1] If a user uses Flink default shuffle master {{NettyShuffleMaster}}, it is > not problematic at the moment since it returns a completed future on > registration, so that it would be a synchronized process. However, if users > implement their own shuffle service in which the > {{ShuffleMaster#registerPartitionWithProducer}} returns an pending future, it > can be a problem. This is possible since customizable shuffle service is open > to users since 1.9 (via config "shuffle-service-factory.class"). > To avoid issues to happen, we may either > 1. fix all the usages of {{Execution#producedPartitions}} regarding the async > assigning, or > 2. change {{ShuffleMaster#registerPartitionWithProducer(...)}} to a sync > interface -- This message was sent by Atlassian Jira (v8.3.4#803005)