Hi all, This patch is to add setting to send status packets after fsync to --status-interval of pg_receivexlog.
If -1 is specified to --status-interval, status packets is sent as soon as after fsync. Others are the same as when 0 is specified to --status-interval. When requested by the server, send the status packet. To use replication slot, and specify -1 to --fsync-interval. As a result, simple WAL synchronous replication can be performed. In simple WAL synchronization, it is possible to test the replication. If there was F/O in synchronous replication, it is available in the substitute until standby is restored. Regards, -- Furuya Osamu
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