Add rebuild-tracker drush command

Hey volkerk,

I believe you might just misinterpret the names of functions.
In the comment above resetTracker command, we have this:

* Marks one or all indexes for reindexing without deleting existing data.

This is exactly what it does, with the help of
$index->reindex();

I have just set up the test environment locally to recreate the same scenario.
And with a combination of commands:

drush search-api:reset-tracker
drush sapi-i
> [notice] Successfully indexed 3 items.
> [notice] Message: Successfully indexed 3 items.

drush cr

I managed to re-create indexes and saw the changes in the content in an indexed view.

I hope this helps and cheers,
Ivan

Thanks for reporting this issue!
Ivan616 is right, though: You’re misinterpreting the command, what it does is clearly documented.
I am fully prepared to admit that the name is misleading, since we later added the “rebuild tracker” functionality you’re looking for, but the command is still correct and definitely cannot just be changed at this point.

Instead, I’m happy to add a new search-api-rebuild-tracker command (or similar) that does what you’re asking for. You’re right: this functionality doesn’t seem available yet via Drush.

Here is the new drush command

Thanks for the patch, looks pretty good!
A few minor nitpicks fixed in the attached revision, please test/review!

Also, though, should we maybe add a confirmation to the command? I.e., user has to enter y before we actually proceed?
Should maybe have done this for all the potentially (very) disruptive commands.

Committed, and just created #3135187: Add confirmation for disruptive Drush commands? as a follow-up.