https://bugs.openldap.org/show_bug.cgi?id=9360
Issue ID: 9360
Summary: MDB_BAD_TXN: Transaction must abort, has a child, or
is invalid
Product: LMDB
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: ---
Component: liblmdb
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
I have 2 python scripts writing to a database (lmdb 0.9.26, py-lmdb 0.98) and
5-10 lua processes (with lightningmdb module which uses lmdb 0.9.22) which are
long-running serving queries from the database.
The database seems fine, not corrupted, and the python writes still working all
the time. But periodically (perhaps 10-20% of the time), in a way I am unable
to reliably reproduce, when the lua starts up every time a query is issued txn
dbi_open returns "MDB_BAD_TXN: Transaction must abort, has a child, or is
invalid". A direct restart of the processes does not fix this issue, however
stopping lua+python and then starting again after a 5-20s wait usually fixes
the issue. This has been reproduced over multiple servers but I'm at a loss as
to how to debug this any further?
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