django-haystack / django-haystack/celery-haystack
Limit indexing to single task a time
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- Dominant language
- Python
- Stars
- 226
- Forks
- 95
- PR merge metrics
- No merged PRs in 30d
Description
I would like to use haystack + celery-haystack + xapian-haystack. Unfortunatelly "Because Xapian does not support simultaneous WritableDatabase connections. If this occurs an DatabaseLockError exception will be raised by Xapian."
So I thought about limiting tasks number to only one by time. Didn't see a proper setting for that, because as far as I understand your code, the COMMAND_WORKERS=1 is not the solution for that.
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing how celery-haystack configures task concurrency and whether COMMAND_WORKERS affects indexing task execution. Check the Xapian indexing path for concurrent WritableDatabase access; done means indexing tasks are limited to one at a time without DatabaseLockError exceptions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend, search
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100