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Add 'active_in' column to pg_replication_slots.

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Right now it is visible whether a replication slot is active in any
session, but not in which.  Adding the active_in column, containing the
pid of the backend having acquired the slot, makes it much easier to
associate pg_replication_slots entries with the corresponding
pg_stat_replication/pg_stat_activity row.

This should have been done from the start, but I (Andres) dropped the
ball there somehow.

Author: Craig Ringer, revised by me Discussion:
CAMsr+YFKgZca5_7_ouaMWxA5PneJC9LNViPzpDHusaPhU9pA7g@mail.gmail.com
This commit is contained in:
Andres Freund
2015-04-21 11:51:06 +02:00
parent 528c2e44ab
commit d811c037ce
9 changed files with 47 additions and 28 deletions
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4
src/include/replication/slot.h
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@@ -84,8 +84,8 @@ typedef struct ReplicationSlot
/* is this slot defined */
bool in_use;
/* is somebody streaming out changes for this slot */
bool active;
/* Who is streaming out changes for this slot? 0 in unused slots. */
pid_t active_pid;
/* any outstanding modifications? */
bool just_dirtied;