Cascading replication feature for streaming log-based replication.
Simon Riggs <simon@2ndQuadrant.com>
Cascading replication feature for streaming log-based replication. Standby servers can now have WALSender processes, which can work with either WALReceiver or archive_commands to pass data. Fully updated docs, including new conceptual terms of sending server, upstream and downstream servers. WALSenders terminated when promote to master. Fujii Masao, review, rework and doc rewrite by Simon Riggs
Files
| Path | Change | +/− |
|---|---|---|
| doc/src/sgml/config.sgml | modified | +78 −49 |
| doc/src/sgml/high-availability.sgml | modified | +61 −1 |
| src/backend/access/transam/xlog.c | modified | +155 −110 |
| src/backend/postmaster/postmaster.c | modified | +20 −0 |
| src/backend/replication/basebackup.c | modified | +5 −0 |
| src/backend/replication/syncrep.c | modified | +7 −0 |
| src/backend/replication/walreceiver.c | modified | +5 −2 |
| src/backend/replication/walsender.c | modified | +83 −25 |
| src/include/access/xlog.h | modified | +5 −1 |
| src/include/replication/walsender.h | modified | +4 −1 |