Asias He c5784c1149 repair: Sort follower nodes by proximity ...

Sort follower nodes by the proximity so that in the step where the
master node gets missing rows from repair follower nodes，the master
node has a chance to get the missing rows from a near node first (e.g.,
local dc node), avoding getting rows from a far node.

For example:

dc1: n1, n2
dc2: n3, n4
dc3: n5, n6

Run repair on n1, with this patch, n1 will get data from n2 which is in the same dc first.

[shard 0] repair - Repair 1 out of 1 ranges, id=[id=1, uuid=8b0040bd-5aa5-42e1-bb9f-58c5e7052aec],
shard=0, keyspace=ks, table={cf}, range=(-6734413101754081925, -6539883972247625343],
peers={127.0.39.5, 127.0.39.6, 127.0.39.2, 127.0.39.4, 127.0.39.3},
live_peers={127.0.39.5, 127.0.39.6, 127.0.39.2, 127.0.39.4, 127.0.39.3}

[shard 0] repair - Before sort = {127.0.39.5, 127.0.39.6, 127.0.39.2, 127.0.39.4, 127.0.39.3}

[shard 0] repair - After sort = {127.0.39.2, 127.0.39.5, 127.0.39.6, 127.0.39.4, 127.0.39.3}

[shard 0] repair - Started Row Level Repair (Master): local=127.0.39.1,
peers={127.0.39.2, 127.0.39.5, 127.0.39.6, 127.0.39.4, 127.0.39.3}

Closes #9769

2022-01-05 14:09:59 +02:00

..

repair.cc

repair: Get rid of the gc_grace_seconds

2022-01-04 19:48:14 +02:00

repair.hh

repair: Get rid of the gc_grace_seconds

2022-01-04 19:48:14 +02:00

row_level.cc

repair: Sort follower nodes by proximity

2022-01-05 14:09:59 +02:00

row_level.hh

repair: Improve memory usage tracking and oom protection

2022-01-04 20:11:36 +02:00