This is a document for PGroonga 2.X and 3.X. See PGroonga 1.x document when you're using old PGroonga.
pgroonga.lock_timeout parameterpgroonga.lock_timeout parameter controls lock timeout.
PGroonga tries to acquire a lock the specified timeout times at 1 millisecond interval until PGroonga acquires a lock.
The default value is 10000000. It means that PGroonga tries to acquire a lock for about 2.7 hours until PGroonga acquires a lock by default.
In SQL:
SET pgroonga.lock_timeout = timeout;
In postgresql.conf:
pgroonga.lock_timeout = timeout
timeout is a number value.
Here is an example to change PGroonga gives up acquiring a lock when PGroonga can't acquire a lock for 1 minute (1 millisecond * 60000 = 60000 milliseconds = 60 seconds = 1 minute):
SET pgroonga.lock_timeout = 60000;