feat(sharding): place regions and primaries onto joining nodes - #115

Open

austin-barrington wants to merge 9 commits into

mainfrom

feat/sharding-joiner-replica-place

Commits on Sep 4, 2026

Allow a one-member sharded cluster to own regions.
austin-barrington
committed
f7b550a
Install the committed shard map on join before region movement.
austin-barrington
committed
8bdbd99

Commits on Sep 6, 2026

Stage existing region data onto a live joiner (P1.3)

austin-barrington
and
claude
committed
25ead68
Place region primaries on joined members (P1.4-P1.6)

austin-barrington
and
claude
committed
ece4034
Re-read the region before each placement transfer

austin-barrington
and
claude
committed
0f786b7
Fix review blockers in region placement (#1-#7)

austin-barrington
and
claude
committed
cb14632
Stop placement stalling on one lagging candidate (#9-#12)

austin-barrington
and
claude
committed
6987d7e
Say what idle-member placement actually triggers on (#8)

austin-barrington
and
claude
committed
e96f7a0

Commits on Sep 7, 2026

Default the AddPeer gate on

austin-barrington
and
claude
committed
425f80a