This hooks the wal buffer up to the server. When segments go over their max size, they will be persisted if that configuration was set. A follow on commit will add persistence based on time (how long the segment has been open).
Adds serialization with compression and checksum for WAL buffer segments.
This required a weird structure where the flatbuffer bytes of ReplicatedWrite were kept as a raw payload. I did this because otherwise each of the replicated writes would have been rebuilt in the segment.
The other thing that isn't ideal is that deserializing a segment actually marshals it into a Rust struct as opposed to keeping the entire thing as raw flatbuffers. We could update this later to have a concept of an open segment (regular rust stuct) and closed segments that are just the flatbuffers.
* feat: add create and get database to API
This commit is start of the IOx specific API. It puts everything under /iox/api/v1 as this is the beginning of the IOx API. Creating a database is done with a PUT and a GET request can retrieve the DatabaseRules details.
* feat: add defaults for DatabaseRules for create_database
* feat: add create and get database to API
This commit is start of the IOx specific API. It puts everything under /iox/api/v1 as this is the beginning of the IOx API. Creating a database is done with a PUT and a GET request can retrieve the DatabaseRules details.
This adds benchmarks to the data_types crate for ReplicatedWrite. This is the first in a series to test benchmarking Flatbuffers vs. JSON for the WAL Segment format.
* feat: implement partition chunk rollover + ids and timestamps
* feat: add last_write_timestamp
* refactor: Use DateTime<Utc> rather than Instant
* refactor: avoid use of structure to generate ids
* feat: Implement write buffer to Parquet snapshotting
This introduces snapshot to the server packages to manage snapshotting. It also introduces a new trait for representing a Partition. There is a very crude API wired up in http_routes for testing purposes. Follow on work will bring the server package into http_routes and rework the snapshot API.
Previosuly the $ORG and $BUCKET was joined as:
$ORG + "_" + $BUCKET
Which is fine unless either $ORG or $BUCKET includes a "_", such as:
$ORG = "org_a"
$BUCKET = "bucket"
and
$ORG = "org"
$BUCKET = "a_bucket"
This change continues to join $ORG and $BUCKET with an underscore, but
disallows underscores in either $ORG or $BUCKET. It appears these values
are non-zero u64s in the gRPC protocol converted to their base-10 string
representations for the DB name, so this seems safe to enforce.
In addition, this change introduces a `DatabaseName` type to avoid
passing bare strings around, and allow consuming code to ensure only
valid database names are provided at compile type. This type works with
both owned & borrowed content so doesn't force a string copy where we
can avoid it, and derefs to `str` to make it easier to use with existing
code.
I've been minimally invasive in pushing the `DatabaseName` through the
existing code and figured I'd see what the sentement is first.
Candidates for conversion from `str` to `DatabaseName` that seem to make
sense to me include:
- `DatabaseStore` trait
- `RemoteServer` trait
- Others? Basically anywhere other than the "edge" API inputs
Fixes#436 (thanks @zeebo)
This splits the cluster package out into server and buffer modules. The WAL buffer is in-memory and split into segments. Follow on commits will implement it in the server and add persistence to object storage.
Andrew Lamb
Paul Dix
Paul Dix
Dom
huming