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Add more logging around message retention policies support #6717

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merged 15 commits into from
Jan 17, 2020

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babolivier
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@babolivier babolivier commented Jan 16, 2020

So we can debug issues like #6683 more easily.

Built on top of #6714 (so I can test it on my HS).

When figuring out which topological token to start a purge job at, we
need to do the following:

1. Figure out a timestamp before which events will be purged
2. Select the first stream ordering after that timestamp
3. Select info about the first event after that stream ordering
4. Build a topological token from that info

In some situations (e.g. quiet rooms with a short max_lifetime), there
might not be an event after the stream ordering at step 3, therefore we
abort the purge with the error `No event found`. To mitigate that, this
patch fetches the first event _before_ the stream ordering, instead of
after.
@babolivier babolivier requested a review from a team January 16, 2020 14:11
@babolivier babolivier force-pushed the babolivier/retention_log branch from 288a2aa to 3098dfd Compare January 16, 2020 14:11
@babolivier babolivier requested a review from a team January 17, 2020 11:44
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lgtm, modulo it not being up-to-date with #6714

@babolivier babolivier merged commit a17f643 into develop Jan 17, 2020
babolivier pushed a commit that referenced this pull request Sep 1, 2021
* commit 'a17f64361':
  Add more logging around message retention policies support (#6717)
  Fix up changelog
  bump version to v1.9.0.dev2
@babolivier babolivier deleted the babolivier/retention_log branch October 28, 2021 15:54
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2 participants