Fixed logic for forceful topic deletion #7356
Merged
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Motivation
In the topic deletion, during the removal of non-durable subscriptions, there is a race condition that leads to a state the topic cannot get deleted anymore, not even forcefully, until it gets unloaded/reloaded.
The log trace is:
There are a couple of issues here:
The
isFenced
flag is only set after all producers/consumers are disconnected, but that won't prevent the from reconnecting.We're doing these 3 operations in steps:
The problem with (2) is that, for a non-durable subscription, the cursor is already deleted after (1), so the unsubscribing will fail there.
When deleting the topic, all the cursors are going to get deleted when the managed ledger is deleted. There is no need to pre-delete all of them.
Regarding
USAGE_COUNT_UPDATER
, if we're trying to force-delete operation, this operation should go through even if the counter is not correct. (eg: after the effects of Handling error in creation of non-durable cursor #7355)Fixed one case in which
USAGE_COUNT_UPDATER
wasn't decremented after an error.