Martyn Inglis 832005efef Updates to the delete CSV file job to reduce the number of eligible jobs in any run ...

- previously this was unbounded, so it got all jobs older then 7 days. In excess of 75,000 🔥
- this meant that the job took (a) a long time and (b) a lot memory and (c) doing the same thing every day

These changes mean that the job has a 2 day eligible window for jobs, minimising the number of eligible jobs in a run, whilst still retaining some leeway in event if it failing one night.

In principle the job runs early morning on a given day. The previous 7 days are left along, and then the previous 2 days worth of files are deleted:

so:
runs on
31st
30,29,28,27,26,25,24 are ignored
23,22 jobs here have files deleted
21 and earlier are ignored.

2017-04-05 16:23:41 +01:00

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