Now princeple is following: acceptor threads (libpq and http) error will
bring the pageserver down, but all per-tenant thread failures will be treated
as an error.
A new `get_lsn_by_timestamp` command is added to the libpq page service
API.
An extra timestamp field is now stored in an extra field after each
Clog page. It is the timestamp of the latest commit, among all the
transactions on the Clog page. To find the overall latest commit, we
need to scan all Clog pages, but this isn't a very frequent operation
so that's not too bad.
To find the LSN that corresponds to a timestamp, we perform a binary
search. The binary search starts with min = last LSN when GC ran, and
max = latest LSN on the timeline. On each iteration of the search we
check if there are any commits with a higher-than-requested timestamp
at that LSN.
Implements github issue 1361.
* Traverse frozen layer in get_reconstruct_data in reverse order
* Fix comments on frozen layers.
Note explicitly the order that the layers are in the queue.
* Add fail point to reproduce failpoint iteration error
Co-authored-by: Heikki Linnakangas <heikki@neon.tech>
Previously we've used table interface, but there was no easy way to pass
it as an override to pageserver through cli. Use the same strategy as
for remote storage config parsing
Add tenant config API and 'zenith tenant config' CLI command.
Add 'show' query to pageserver protocol for tenantspecific config parameters
Refactoring: move tenant_config code to a separate module.
Save tenant conf file to tenant's directory, when tenant is created to recover it on pageserver restart.
Ignore error during tenant config loading, while it is not supported by console
Define PiTR interval for GC.
refer #1320
This depends on a hacked version of the 'pprof-rs' crate. Because of
that, it's under an optional 'profiling' feature. It is disabled by
default, but enabled for release builds in CircleCI config. It doesn't
currently work on macOS.
The flamegraph is written to 'flamegraph.svg' in the pageserver
workdir when the 'pageserver' process exits.
Add a performance test that runs the perf_pgbench test, with profiling
enabled.
Bojan Serafimov
Bojan Serafimov
Kirill Bulatov
Dmitry Rodionov
Anastasia Lubennikova
Stas Kelvich
Anastasia Lubennikova
Heikki Linnakangas
Konstantin KnizhnikandHeikki Linnakangas
Dhammika Pathirana
Dmitry Rodionov
Kirill Bulatov
Heikki Linnakangas
Dmitry Ivanov