sjwiesman opened a new pull request #10780: [FLINK-15406][state-processor-api] RocksDB savepoints with heap timers cannot be restored by non-process functions URL: https://github.com/apache/flink/pull/10780 ## What is the purpose of the change The keyed bootstrap operator creates an internal timer service regardless of whether or not timers are used by the bootstrap function. The AbstractStreamOperator has a special case for handling heap-based timers during the snapshot. This case will fail if the operator 1) does not support timers such as Map and FlatMap and 2) the operator contains a timer service. This change makes the creation of the timer service lazy so that keyed Map and FlatMap operators can be bootstrapped by the state proc api. ## Brief change log - Introduce a LazyTimerService ## Verifying this change UT ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / no / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (not applicable / docs / JavaDocs / **not documented**)
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