The symptom being exhibited by Michael's new BF animal tanager
is perfectly reproducible elsewhere.

$ cat /home/postgres/tmp/temp_config
#default_toast_compression = lz4
wal_compression = lz4
$ export TEMP_CONFIG=/home/postgres/tmp/temp_config
$ cd ~/pgsql/src/test/recovery
$ make check PROVE_TESTS=t/011_crash_recovery.pl
...
+++ tap check in src/test/recovery +++
t/011_crash_recovery.pl .. 1/? 
#   Failed test 'new xid after restart is greater'
#   at t/011_crash_recovery.pl line 53.
#     '729'
#         >
#     '729'

#   Failed test 'xid is aborted after crash'
#   at t/011_crash_recovery.pl line 57.
#          got: 'committed'
#     expected: 'aborted'
# Looks like you failed 2 tests of 3.

Maybe this is somehow the test script's fault, but I don't see how.

It fails the same way with 'wal_compression = pglz', so I think it's
generic to that whole feature rather than specific to LZ4.

                        regards, tom lane


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