This commit reverts PR #30214, which addressed bug MM-60790 but caused a
performance regression tracked by MM-66782.
This revert has two implications:
1. The performance issue is solved.
2. The original bug is re-introduced.
Re-introducing the original bug seems not to be ideal, but I argue that
the original PR did not actually fix the bug:
- Before that PR, looking for a quoted string would return additional
results: the UX was slightly confusing, because when the user looked
for the word "stateful", the results would contain matches like
"states" (see MM-60790).
- After that PR, looking for a quoted string can timeout, so that the
list of results becomes empty. The UX here may be less confusing,
since the user simply doesn't find what they're looking for, and they
may assume that string is not present in any post, but it's completely
wrong: the result list is empty because the SQL query timed out and
thus the endpoint returned 0 results.
The solution to the original issue should be addressed via
Elasticsearch, which should provide a more refined and precise search
results.
For more information on the investigation on this issue and the
motivation behind the revert, see
https://mattermost.atlassian.net/wiki/x/IYAk_w
Co-authored-by: Mattermost Build <build@mattermost.com>
fddd4a70bc