clintropolis opened a new pull request #7256: fix SequenceMetadata deserialization URL: https://github.com/apache/incubator-druid/pull/7256 Fixes #7252. I don't love this fix, am totally open to other ideas. This PR adds an abstract method to `SeekableStreamIndexTaskRunner` ``` abstract TypeReference<List<SequenceMetadata<PartitionIdType, SequenceOffsetType>>> getSequenceMetadataTypeReference(); ``` so that sub classes can create the correct `TypeReference` to allow deserialization of `SequenceMetadata` during task restore to function. This also means `SequenceMetadata` has been pulled out of `SeekableStreamIndexTaskRunner` and given the same generic parameters of `PartitionIdType` and `SequenceOffsetType`. This was sort of ugly because `SequenceMetadata` was calling methods on it's parent `SeekableStreamIndexTaskRunner`, so those methods now take a runner as an argument. Also fixed is an issue where a resumed task that was at the end offset would not correctly end the task, resulting in what was afaict a task stuck in it's read loop forever.
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