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On a busy system, TRANS3_COMMIT control can take upto or longer than 3 seconds. On timeout, there are few possible outcomes. 1. The transaction has completed on all nodes and TRANS3_COMMIT control has returned. In such a case, there is no problem. 2. The transaction has completed on the local node, but TRANS3_COMMIT control is still active. In such a case, ctdb_transaction_commit() can return successfully. If this is being called from ctdb, then ctdb will exit. This will cause ctdb daemon to trigger recovery since the client exited while transaction is active. This will cause unnecessary recovery. 3. Database recovery was started and ctdb_transaction_commit() will retry till the recovery completes the transaction. Increasing the timeout to 30 seconds will avoid the spurious database recoveries when TRANS3_COMMIT control takes longer to finish. Signed-off-by: Amitay Isaacs <amitay@gmail.com> Reviewed-by: Volker Lendecke <vl@samba.org> Autobuild-User(master): Volker Lendecke <vl@samba.org> Autobuild-Date(master): Fri Mar 11 19:59:53 CET 2016 on sn-devel-144
This is the release version of CTDB, a clustered implementation of TDB database used by Samba and other projects to store temporary data. This software is freely distributable under the GNU public license, a copy of which you should have received with this software (in a file called COPYING). For documentation on CTDB, please visit CTDB website http://ctdb.samba.org.