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Sun OpenDS Standard Edition 2.2 Architectural Reference |
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2. The Directory Server Access Control Model
3. Understanding the Directory Server Schema
4. Directory Server Index Databases
5. Understanding Directory Server Plug-Ins
6. Directory Server Replication
Overview of the Directory Server Replication Architecture
Basic Replication Architecture
Directory Server Change Processing
Historical Information and Conflict Resolution
What is a Replication Conflict?
Purging Historical Information
Schema Replication Architecture
Full Update Status and Bad Generation ID Status
Safe Read Mode and Replication Groups
Assured Replication Connection Algorithm
Assured Replication and Replication Status
Assured Replication Monitoring
Fractional Data Set Identification
Fractional Replication Filtering
Fractional Replication and Local Operations
How the External Change Log Works
Porting Applications that Rely on Other Change Logs
Differences Between the ECL and the LDAP Change Log Draft
Additional Differences Between the ECL and the Sun DSEE Retro Change Log
API for Compatibility With the LDAP Change Log Draft and the Sun DSEE Retro Change Log
Limitations of the Compability API
The following list provides a description of each possible replication status that can be held by a replicated domain.
The local replicated domain is not connected to any replication server. Replication cannot occur until a connection to a replication server is established. This is the only possible status if there is no connection to a replication server.
The local replicated domain is almost in sync with its peers (that is, with the updates received on the replication server). The client LDAP requests have been processed normally.
The local replicated domain is too late regarding updates that have been queued by the replication server. What constitutes too late is defined by the degraded status threshold, that is, the number of changes that the replication server has in its queue for the directory server. With this status, the local directory server might be slow in replaying changes. This can have an impact on assured replication.
An online full update is currently being performed on the local replicated domain (in other words, the domain is receiving entries from a remote directory server). The full update must be completed before the status can be changed and before the replicated domain can participate in replication again.
The local replicated domain does not have the same generation ID as the replication server to which it is connected. Replication cannot run until the local domain is initialized with a data set that has the same generation ID as its replication server. To initialize the local domain, perform an online full update, an LDIF import, or a binary copy of the database, retaining the domain entries.
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