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Implement archive_timeout feature to force xlog file switches to occur no more

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than N seconds apart.  This allows a simple, if not very high performance,
means of guaranteeing that a PITR archive is no more than N seconds behind
real time.  Also make pg_current_xlog_location return the WAL Write pointer,
add pg_current_xlog_insert_location to return the Insert pointer, and fix
pg_xlogfile_name_offset to return its results as a two-element record instead
of a smashed-together string, as per recent discussion.

Simon Riggs
This commit is contained in:
Tom Lane
2006-08-17 23:04:10 +00:00
parent bb764e94ce
commit e8ea9e9587
11 changed files with 279 additions and 74 deletions
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5
src/backend/utils/misc/postgresql.conf.sample
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@ -167,8 +167,9 @@
# - Archiving -
#archive_command = '' # command to use to archive a logfile
# segment
#archive_command = '' # command to use to archive a logfile segment
#archive_timeout = 0 # force a logfile segment switch after this
# many seconds; 0 is off
#---------------------------------------------------------------------------