Do not execute bind on on the LDAP reader thread
Each LDAP connection has a single associated thread, executing the handlers for async requests; this is managed by the LDAP library. The bind operation is blocking for the connection. It is a deadlock to call bind, if on the LDAP reader thread for the same connection, because waiting for the bind response blocks the thread processing responses (for this connection).
This will execute the bind operation (and the subsequent runnable) on a thread pool after checking for the conflict above.
Closes: elastic/x-pack-elasticsearch#2570, elastic/x-pack-elasticsearch#2620
Original commit: elastic/x-pack-elasticsearch@404a3d8737
This commit re-enables the OpenLDAP tests that were previously running against a one-off instance
in AWS but now run against a vagrant fixture. There were some IntegTests that would run against the
OpenLDAP instance randomly but with this change they no longer run against OpenLDAP. This is ok as
the functionality that is tested by these has coverage elsewhere.
relates elastic/x-pack-elasticsearch#1823
Original commit: elastic/x-pack-elasticsearch@ac9bc82297
Albert Zaharovits
Simon Willnauer
Jay Modi