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7d7b9eacff
On a 32 bit architecture the size of int is 32 bits. Thus converting from
int64, uint64 can overflow it and flip the sign.
Try for yourself in playground:
package main
import "fmt"
func main() {
x := int64(0x1F0000001)
y := int64(1)
z := int32(x - y) // numerically this is 0x1F0000000
fmt.Printf("%v\n", z)
}
Prints -268435456 as if x was smaller.
Followup to #12650
Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>
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| agent | ||
| chunkenc | ||
| chunks | ||
| docs | ||
| encoding | ||
| errors | ||
| fileutil | ||
| goversion | ||
| index | ||
| record | ||
| testdata | ||
| tombstones | ||
| tsdbutil | ||
| wlog | ||
| .gitignore | ||
| block.go | ||
| block_test.go | ||
| blockwriter.go | ||
| blockwriter_test.go | ||
| CHANGELOG.md | ||
| compact.go | ||
| compact_test.go | ||
| db.go | ||
| db_test.go | ||
| example_test.go | ||
| exemplar.go | ||
| exemplar_test.go | ||
| head.go | ||
| head_append.go | ||
| head_bench_test.go | ||
| head_read.go | ||
| head_read_test.go | ||
| head_test.go | ||
| head_wal.go | ||
| isolation.go | ||
| isolation_test.go | ||
| mocks_test.go | ||
| ooo_head.go | ||
| ooo_head_read.go | ||
| ooo_head_read_test.go | ||
| ooo_head_test.go | ||
| querier.go | ||
| querier_bench_test.go | ||
| querier_test.go | ||
| README.md | ||
| repair.go | ||
| repair_test.go | ||
| tsdbblockutil.go | ||
| wal.go | ||
| wal_test.go | ||
TSDB
This directory contains the Prometheus TSDB (Time Series DataBase) library, which handles storage and querying of all Prometheus v2 data.
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: