BRIN index WAL is broken in HEAD.
Commit 2c03216d831160bedd72d4, the Revamp the WAL record format, is the culprit.
The easiest way to see this is via streaming replication.
On master:
create table foobar as select * from generate_series(1,10000);
create index on foobar using brin (generate_series );
On replica:
set enable_seqscan TO off;
explain (analyze) select count(*) from foobar ;
ERROR: corrupted BRIN index: inconsistent range map
Cheers,
Jeff
