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Marc-André Bombeck
8ce8065372
The multi-year Google Health backfill run walked three and four years of heart rate on every pull request, some 3.7 million readings in over twenty minutes, which filled most of its shard's time budget. What a run costs is its pages, so a shorter history only helps with shorter slices. HEALTHLOG_BACKFILL_TEST_DAYS now sets the size. Unset, the runs walk 120 and 160 days in 50-page slices with the faults at the same places within them and the light collections already walked, about a tenth of the pages. The heap growth bound applies to the full run only. The full three and four years run nightly and on demand in integration-long.yml. Refs #1220