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app/vminsert/netstorage: sort the -storageNode list passed to vminsert nodes

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This should reduce resource usage (CPU, RAM, disk IO) at vmstorage nodes
if the addresses of vmstorage nodes are passed in random order to vminsert nodes.
This commit is contained in:
Aliaksandr Valialkin 2021-06-23 14:00:06 +03:00
parent a22f37599b
commit c18017a9c3
2 changed files with 7 additions and 0 deletions
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6
app/vminsert/netstorage/netstorage.go
View file

@ -4,6 +4,7 @@ import (
"flag"
"fmt"
"io"
"sort"
"sync"
"sync/atomic"
"time"
@ -400,6 +401,11 @@ func InitStorageNodes(addrs []string) {
logger.Panicf("BUG: too much addresses: %d; max supported %d addresses", len(addrs), 255)
}
// Sort addrs in order to guarantee identical series->vmstorage mapping across all the vminsert nodes.
addrsCopy := append([]string{}, addrs...)
sort.Strings(addrsCopy)
addrs = addrsCopy
storageNodes = storageNodes[:0]
for _, addr := range addrs {
sn := &storageNode{

1
docs/CHANGELOG.md
View file

@ -15,6 +15,7 @@ sort: 15
* FEATURE: vmagent: support generic auth configs in `consul_sd_configs` in the same way as Prometheus 2.28 does. See [this issue](https://github.com/prometheus/prometheus/issues/8924) for details.
* FEATURE: [vmctl](https://docs.victoriametrics.com/vmctl.html): limit the number of samples per each imported JSON line. This should limit the memory usage at VictoriaMetrics side when importing time series with big number of samples.
* FEATURE: vmselect: log slow queries across all the `/api/v1/*` handlers (aka [Prometheus query API](https://prometheus.io/docs/prometheus/latest/querying/api)) if their execution duration exceeds `-search.logSlowQueryDuration`. This should simplify debugging slow requests to such handlers as `/api/v1/labels` or `/api/v1/series` additionally to `/api/v1/query` and `/api/v1/query_range`, which were logged in the previous releases.
* FEATURE: vminsert: sort the `-storageNode` list in order to guarantee the identical `series -> vmstorage` mapping across all the `vminsert` nodes. This should reduce resource usage (RAM, CPU and disk IO) at `vmstorage` nodes if `vmstorage` addresses are passed in random order to `vminsert` nodes.
* BUGFIX: prevent from adding new samples to deleted time series after the rotation of the inverted index (the rotation is performed once per `-retentionPeriod`). See [this comment](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1347#issuecomment-861232136) for details.
* BUGFIX: vmstorage: reduce high disk write IO usage on systems with big number of CPU cores. The issue has been introduced in the release [v1.59.0](#v1590). See [this commit](aa9b56a046b6ae8083fa659df35dd5e994bf9115) and [this comment](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1338#issuecomment-863046999) for details.