URLSelectSkipLock, indexer sends a
LOCK TABLE url SQL query when
fetching a set of new crawler targets from
a MySQL database to avoid
multiple indexer instances crawling
into the same URLs. Fetching targets can take up
to a few seconds in a huge database and can make
simultaneous search queries stall and wait
for indexer to finish fetching targets.
URLSelectSkipLock helps to avoid this
kind of delays in search queries when you're running only
a single instance of indexer at the same time.
Running a single indexer instance
with multiple threads using the
is OK together with
The default value is no.