When a replica is in the process of synchronizing with its master, DB operations are blocked at some points during this process until the synchronization is completed. For replicas with a heavy read load, these blocked operations may represent an unacceptable loss in throughput.
You can configure DB so that it will not block when synchronization is in
process. Instead, the DB operation will fail,
immediately throwing a
com.sleepycat.db.ReplicationLockoutException
exception.
When this happens, it is up to your application to determine
what action to take (that is, logging the event, making an appropriate user
response, retrying the operation, and so forth).
To turn off blocking on synchronization, specify
ReplicationConfig.NOWAIT and
true to
Environment.setReplicationConfig().
To turn off this feature, specify
false for the
ReplicationConfig.NOWAIT field.