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SqliteRevMap: wait indefinitely for database lock
Python sqlite has 5 seconds timeout by default, which means if a writer holds
the lock, and the second writer will error out after 5 seconds.
In our use-case, it makes sense to just wait. However, sqlite does not support
waiting forever (see sqlite3_busy_timeout). Therefore use a while loop to
workaround.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Tue, 19 Jul 2016 20:34:11 +0100 |
| parents | fc80c25bc94b |
| children | 3f47dd9a6352 |
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