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[Question #228678]: How does whisper-merge work?

 

New question #228678 on Graphite:
https://answers.launchpad.net/graphite/+question/228678

Does whisper-merge.py always overwrite? That is, does it always replace the sample in the target file, or does it only write empty cells? 

Second, does whisper-merge.py use the storage-schema and storage-aggregator rules? Does it accumulate (sum/min/max/average) high-definition samples into one low-definition sample when the target is a longer retention cell than the source?

Thanks!

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