nlu90 opened a new pull request #2910: make LocalFSStorage clean checkpoints before store URL: https://github.com/apache/incubator-heron/pull/2910 The current implementation of LocalFSStorage would cause unlimited checkpoints to be saved on local disk and thus out of disk space problem. This PR fixes the problem by adding a limit of the number of checkpoints saved on local disk and clean unnecessary checkpoints every time before trying to store a new checkpoint. The most recent N checkpoints will be saved and any older checkpoints will be deleted. Tested on local mac and worked as expected.
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