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a484a83d4a
Calling `wal.NewSegmentBufReader()` without any segments would cause a `panic` resulting in prometheus crashing. This patch fixes the panic by making segmentBufReader return a EOF if there are not segments. This also means an empty checkpoint directory which should never be the case unless it has been tampered with (or has issues due to the underlying filesystem e.g. NFS) would be ignored by Prometheus and would continue to run instead of the current behaviour which is to panic. Fixes: https://github.com/prometheus/prometheus/issues/9605 Signed-off-by: Sunil Thaha <sthaha@redhat.com>
TSDB
This directory contains the Prometheus TSDB (Time Series DataBase) library, which handles storage and querying of all Prometheus v2 data.
Due to an issue with versioning, the "latest" docs shown on Godoc are outdated. Instead you may use the docs for v2.31.1
Documentation
External resources
- A writeup of the original design can be found here.
- Video: Storing 16 Bytes at Scale from PromCon 2017.
- Compression is based on the Gorilla TSDB white paper.
A series of blog posts explaining different components of TSDB: