Fix deletes triggering unnecessary compactions #8372
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Tombstone files would be written to all TSM files even if the deleted keys or timerange did not exist in the TSM file. This had the side effect of causing shards to get recompacted back to the same state. If any shards or large numbers of TSM files existed, disk usage and CPU utilization would spike causing issues. This prevents tombstones being written for TSM files that could not possiby contain the series keys being deleted or if the delted time range is outside the range of the file.
benbjohnson
approved these changes
May 8, 2017
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Required for all non-trivial PRs
Tombstone files would be written to all TSM files even if the deleted
keys or timerange did not exist in the TSM file. This had the side
effect of causing shards to get recompacted back to the same state. If
any shards or large numbers of TSM files existed, disk usage and CPU
utilization would spike causing issues.
This prevents tombstones being written for TSM files that could not
possiby contain the series keys being deleted or if the delted time
range is outside the range of the file.
Fixes #8368