diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/protocol.sgml | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml index 1e2604b8326..70165115f5c 100644 --- a/doc/src/sgml/protocol.sgml +++ b/doc/src/sgml/protocol.sgml @@ -1423,10 +1423,15 @@ The commands accepted in walsender mode are: <para> After streaming all the WAL on a timeline that is not the latest one, the server will end streaming by exiting the COPY mode. When the client - acknowledges this by also exiting COPY mode, the server sends a - single-row, single-column result set indicating the next timeline in - this server's history. That is followed by a CommandComplete message, - and the server is ready to accept a new command. + acknowledges this by also exiting COPY mode, the server sends a result + set with one row and two columns, indicating the next timeline in this + server's history. The first column is the next timeline's ID, and the + second column is the XLOG position where the switch happened. Usually, + the switch position is the end of the WAL that was streamed, but there + are corner cases where the server can send some WAL from the old + timeline that it has not itself replayed before promoting. Finally, the + server sends CommandComplete message, and is ready to accept a new + command. </para> <para> |