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Merge pull request #10452 from prometheus/release-2.34

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Merge Release 2.34 into main
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Chris Marchbanks 2022-03-15 12:32:18 -06:00 committed by GitHub
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7 changed files with 73 additions and 21 deletions
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6
CHANGELOG.md
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@ -1,7 +1,9 @@
## 2.34.0-rc.0 / 2022-02-24
## 2.34.0 / 2022-03-15
* [CHANGE] UI: Classic UI removed. #10208
* [CHANGE] Tracing: Migrate from Jaeger to OpenTelemetry based tracing. #9724, #10203, #10276
* [ENHANCEMENT] TSDB: Disable the chunk write queue by default and allow configuration with the experimental flag `--storage.tsdb.head-chunks-write-queue-size`. #10425
* [ENHANCEMENT] HTTP SD: Add a failure counter. #10372
* [ENHANCEMENT] Azure SD: Set Prometheus User-Agent on requests. #10209
* [ENHANCEMENT] Uyuni SD: Reduce the number of logins to Uyuni. #10072
* [ENHANCEMENT] Scrape: Log when an invalid media type is encountered during a scrape. #10186
@ -13,6 +15,8 @@
* [BUGFIX] PromQL: Properly return an error from histogram_quantile when metrics have the same labelset. #10140
* [BUGFIX] UI: Fix bug that sets the range input to the resolution. #10227
* [BUGFIX] TSDB: Fix a query panic when `memory-snapshot-on-shutdown` is enabled. #10348
* [BUGFIX] Parser: Specify type in metadata parser errors. #10269
* [BUGFIX] Scrape: Fix label limit changes not applying. #10370
## 2.33.5 / 2022-03-08

2
VERSION
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@ -1 +1 @@
2.34.0-rc.0
2.34.0

5
cmd/prometheus/main.go
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@ -305,6 +305,9 @@ func main() {
serverOnlyFlag(a, "storage.tsdb.wal-compression", "Compress the tsdb WAL.").
Hidden().Default("true").BoolVar(&cfg.tsdb.WALCompression)
serverOnlyFlag(a, "storage.tsdb.head-chunks-write-queue-size", "Size of the queue through which head chunks are written to the disk to be m-mapped, 0 disables the queue completely. Experimental.").
Default("0").IntVar(&cfg.tsdb.HeadChunksWriteQueueSize)
agentOnlyFlag(a, "storage.agent.path", "Base path for metrics storage.").
Default("data-agent/").StringVar(&cfg.agentStoragePath)
@ -1484,6 +1487,7 @@ type tsdbOptions struct {
NoLockfile bool
AllowOverlappingBlocks bool
WALCompression bool
HeadChunksWriteQueueSize int
StripeSize int
MinBlockDuration model.Duration
MaxBlockDuration model.Duration
@ -1501,6 +1505,7 @@ func (opts tsdbOptions) ToTSDBOptions() tsdb.Options {
NoLockfile: opts.NoLockfile,
AllowOverlappingBlocks: opts.AllowOverlappingBlocks,
WALCompression: opts.WALCompression,
HeadChunksWriteQueueSize: opts.HeadChunksWriteQueueSize,
StripeSize: opts.StripeSize,
MinBlockDuration: int64(time.Duration(opts.MinBlockDuration) / time.Millisecond),
MaxBlockDuration: int64(time.Duration(opts.MaxBlockDuration) / time.Millisecond),

2
go.mod
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@ -29,7 +29,7 @@ require (
github.com/golang/snappy v0.0.4
github.com/google/pprof v0.0.0-20220218203455-0368bd9e19a7
github.com/gophercloud/gophercloud v0.24.0
github.com/grafana/regexp v0.0.0-20220202152315-e74e38789280
github.com/grafana/regexp v0.0.0-20220304095617-2e8d9baf4ac2
github.com/grpc-ecosystem/grpc-gateway v1.16.0
github.com/hashicorp/consul/api v1.12.0
github.com/hashicorp/go-hclog v0.12.2 // indirect

4
go.sum
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@ -737,8 +737,8 @@ github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2z
github.com/gorilla/websocket v0.0.0-20170926233335-4201258b820c/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grafana/regexp v0.0.0-20220202152315-e74e38789280 h1:MOND6wXrwVXEzmL2bZ+Jcbgycwt1LD5q6NQbqz/Nlic=
github.com/grafana/regexp v0.0.0-20220202152315-e74e38789280/go.mod h1:M5qHK+eWfAv8VR/265dIuEpL3fNfeC21tXXp9itM24A=
github.com/grafana/regexp v0.0.0-20220304095617-2e8d9baf4ac2 h1:uirlL/j72L93RhV4+mkWhjv0cov2I0MIgPOG9rMDr1k=
github.com/grafana/regexp v0.0.0-20220304095617-2e8d9baf4ac2/go.mod h1:M5qHK+eWfAv8VR/265dIuEpL3fNfeC21tXXp9itM24A=
github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=

41
tsdb/chunks/head_chunks.go
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@ -69,7 +69,8 @@ const (
// DefaultWriteBufferSize is the default write buffer size.
DefaultWriteBufferSize = 4 * 1024 * 1024 // 4 MiB.
// DefaultWriteQueueSize is the default size of the in-memory queue used before flushing chunks to the disk.
DefaultWriteQueueSize = 1000
// A value of 0 completely disables this feature.
DefaultWriteQueueSize = 0
)
// ChunkDiskMapperRef represents the location of a head chunk on disk.
@ -249,7 +250,10 @@ func NewChunkDiskMapper(reg prometheus.Registerer, dir string, pool chunkenc.Poo
crc32: newCRC32(),
chunkBuffer: newChunkBuffer(),
}
if writeQueueSize > 0 {
m.writeQueue = newChunkWriteQueue(reg, writeQueueSize, m.writeChunk)
}
if m.pool == nil {
m.pool = chunkenc.NewPool()
@ -375,18 +379,33 @@ func repairLastChunkFile(files map[int]string) (_ map[int]string, returnErr erro
// WriteChunk writes the chunk to the disk.
// The returned chunk ref is the reference from where the chunk encoding starts for the chunk.
func (cdm *ChunkDiskMapper) WriteChunk(seriesRef HeadSeriesRef, mint, maxt int64, chk chunkenc.Chunk, callback func(err error)) (chkRef ChunkDiskMapperRef) {
// cdm.evtlPosMtx must be held to serialize the calls to cdm.evtlPos.getNextChunkRef() and the writing of the chunk (either with or without queue).
cdm.evtlPosMtx.Lock()
defer cdm.evtlPosMtx.Unlock()
ref, cutFile := cdm.evtlPos.getNextChunkRef(chk)
if cdm.writeQueue != nil {
return cdm.writeChunkViaQueue(ref, cutFile, seriesRef, mint, maxt, chk, callback)
}
err := cdm.writeChunk(seriesRef, mint, maxt, chk, ref, cutFile)
if callback != nil {
callback(err)
}
return ref
}
func (cdm *ChunkDiskMapper) writeChunkViaQueue(ref ChunkDiskMapperRef, cutFile bool, seriesRef HeadSeriesRef, mint, maxt int64, chk chunkenc.Chunk, callback func(err error)) (chkRef ChunkDiskMapperRef) {
var err error
if callback != nil {
defer func() {
if err != nil && callback != nil {
if err != nil {
callback(err)
}
}()
}
// cdm.evtlPosMtx must be held to serialize the calls to .getNextChunkRef() and .addJob().
cdm.evtlPosMtx.Lock()
defer cdm.evtlPosMtx.Unlock()
ref, cutFile := cdm.evtlPos.getNextChunkRef(chk)
err = cdm.writeQueue.addJob(chunkWriteJob{
cutFile: cutFile,
seriesRef: seriesRef,
@ -473,6 +492,10 @@ func (cdm *ChunkDiskMapper) CutNewFile() {
}
func (cdm *ChunkDiskMapper) IsQueueEmpty() bool {
if cdm.writeQueue == nil {
return true
}
return cdm.writeQueue.queueIsEmpty()
}
@ -602,10 +625,12 @@ func (cdm *ChunkDiskMapper) Chunk(ref ChunkDiskMapperRef) (chunkenc.Chunk, error
return nil, ErrChunkDiskMapperClosed
}
if cdm.writeQueue != nil {
chunk := cdm.writeQueue.get(ref)
if chunk != nil {
return chunk, nil
}
}
sgmIndex, chkStart := ref.Unpack()
// We skip the series ref and the mint/maxt beforehand.
@ -962,7 +987,9 @@ func (cdm *ChunkDiskMapper) Close() error {
cdm.evtlPosMtx.Lock()
defer cdm.evtlPosMtx.Unlock()
if cdm.writeQueue != nil {
cdm.writeQueue.stop()
}
// 'WriteChunk' locks writePathMtx first and then readPathMtx for cutting head chunk file.
// The lock order should not be reversed here else it can cause deadlocks.

18
tsdb/chunks/head_chunks_test.go
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@ -27,6 +27,22 @@ import (
"github.com/prometheus/prometheus/tsdb/chunkenc"
)
var writeQueueSize int
func TestMain(m *testing.M) {
// Run all tests with the chunk write queue disabled.
writeQueueSize = 0
exitVal := m.Run()
if exitVal != 0 {
os.Exit(exitVal)
}
// Re-run all tests with the chunk write queue size of 1e6.
writeQueueSize = 1000000
exitVal = m.Run()
os.Exit(exitVal)
}
func TestChunkDiskMapper_WriteChunk_Chunk_IterateChunks(t *testing.T) {
hrw := createChunkDiskMapper(t, "")
defer func() {
@ -453,7 +469,7 @@ func createChunkDiskMapper(t *testing.T, dir string) *ChunkDiskMapper {
dir = t.TempDir()
}
hrw, err := NewChunkDiskMapper(nil, dir, chunkenc.NewPool(), DefaultWriteBufferSize, DefaultWriteQueueSize)
hrw, err := NewChunkDiskMapper(nil, dir, chunkenc.NewPool(), DefaultWriteBufferSize, writeQueueSize)
require.NoError(t, err)
require.False(t, hrw.fileMaxtSet)
require.NoError(t, hrw.IterateAllChunks(func(_ HeadSeriesRef, _ ChunkDiskMapperRef, _, _ int64, _ uint16) error { return nil }))