[3.18.x] Try to acquire file lock when closing DB #5495
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To prevent multiple processes from opening/closing the DB at the
same time. From what we have seen, the *Invalid argument* issues
only happen when multiple processes try to work with the DB,
multiple threads inside a single process don't seem to hit the
trigger.
Also, we have seen that the issues happen when LMDB tries to use
a robust (shared inter-process) mutex that was already destroyed.
Ticket: ENT-11543
Changelog: CFEngine processes no longer suffer from the "Invalid
argument" issues when working with LMDB
|
backport of #5492 |
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To prevent multiple processes from opening/closing the DB at the same time. From what we have seen, the Invalid argument issues only happen when multiple processes try to work with the DB, multiple threads inside a single process don't seem to hit the trigger.
Also, we have seen that the issues happen when LMDB tries to use a robust (shared inter-process) mutex that was already destroyed.
Ticket: ENT-11543
Changelog: CFEngine processes no longer suffer from the "Invalid
argument" issues when working with LMDB