kramasamy commented on issue #2910: make LocalFSStorage clean checkpoints before store URL: https://github.com/apache/incubator-heron/pull/2910#issuecomment-393339706 background cleaning might be easier in the case of storage system like hadoop - which takes amount of time to delete several files and reclaim. Furthermore, it makes the checkpointing at tmaster immediate rather than waiting for cleanup to finish.
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