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Robert Haas cc333f3233 Modify pg_basebackup to use a new COPY subprotocol for base backups. ... In the new approach, all files across all tablespaces are sent in a single COPY OUT operation. The CopyData messages are no longer raw archive content; rather, each message is prefixed with a type byte that describes its purpose, e.g. 'n' signifies the start of a new archive and 'd' signifies archive or manifest data. This protocol is significantly more extensible than the old approach, since we can later create more message types, though not without concern for backward compatibility. The new protocol sends a few things to the client that the old one did not. First, it sends the name of each archive explicitly, instead of letting the client compute it. This is intended to make it easier to write future patches that might send archives in a format other that tar (e.g. cpio, pax, tar.gz). Second, it sends explicit progress messages rather than allowing the client to assume that progress is defined by the number of bytes received. This will help with future features where the server compresses the data, or sends it someplace directly rather than transmitting it to the client. The old protocol is still supported for compatibility with previous releases. The new protocol is selected by means of a new TARGET option to the BASE_BACKUP command. Currently, the only supported target is 'client'. Support for additional targets will be added in a later commit. Patch by me. The patch set of which this is a part has had review and/or testing from Jeevan Ladhe, Tushar Ahuja, Suraj Kharage, Dipesh Pandit, and Mark Dilger. Discussion: http://postgr.es/m/CA+TgmoaYZbz0=Yk797aOJwkGJC-LK3iXn+wzzMx7KdwNpZhS5g@mail.gmail.com		4 years ago
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initdb	Update copyright for 2022	4 years ago
pg_amcheck	Update copyright for 2022	4 years ago
pg_archivecleanup	Update copyright for 2022	4 years ago
pg_basebackup	Modify pg_basebackup to use a new COPY subprotocol for base backups.	4 years ago
pg_checksums	Update copyright for 2022	4 years ago
pg_config	Update copyright for 2022	4 years ago
pg_controldata	Update copyright for 2022	4 years ago
pg_ctl	Introduce log_destination=jsonlog	4 years ago
pg_dump	pg_upgrade: Preserve relfilenodes and tablespace OIDs.	4 years ago
pg_resetwal	Update copyright for 2022	4 years ago
pg_rewind	Clean up TAP tests' usage of wait_for_catchup().	4 years ago
pg_test_fsync	Update copyright for 2022	4 years ago
pg_test_timing	Update copyright for 2022	4 years ago
pg_upgrade	pg_upgrade: Preserve relfilenodes and tablespace OIDs.	4 years ago
pg_verifybackup	tests: Consistently use pg_basebackup -cfast --no-sync to accelerate tests.	4 years ago
pg_waldump	Update copyright for 2022	4 years ago
pgbench	Update copyright for 2022	4 years ago
pgevent	Update copyright for 2022	4 years ago
psql	Fix psql \d's query for identifying parent triggers.	4 years ago
scripts	Update copyright for 2022	4 years ago
Makefile	Update copyright for 2022	4 years ago