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This commit is contained in:
Aliaksandr Valialkin 2024-05-15 13:23:51 +02:00
parent d3e464a68b
commit 6f798c628f
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GPG key ID: 52C003EE2BCDB9EB
2 changed files with 77 additions and 13 deletions
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44
lib/logstorage/stats_max.go
View file

@ -4,6 +4,8 @@ import (
"slices"
"strings"
"unsafe"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
)
type statsMax struct {
@ -39,17 +41,13 @@ func (smp *statsMaxProcessor) updateStatsForAllRows(br *blockResult) int {
if smp.sm.containsStar {
// Find the minimum value across all the columns
for _, c := range br.getColumns() {
for _, v := range c.getValues(br) {
smp.updateState(v)
}
smp.updateStateForColumn(br, c)
}
} else {
// Find the minimum value across the requested columns
for _, field := range smp.sm.fields {
c := br.getColumnByName(field)
for _, v := range c.getValues(br) {
smp.updateState(v)
}
smp.updateStateForColumn(br, c)
}
}
@ -84,6 +82,40 @@ func (smp *statsMaxProcessor) mergeState(sfp statsProcessor) {
}
}
func (smp *statsMaxProcessor) updateStateForColumn(br *blockResult, c *blockResultColumn) {
if c.isTime {
// Special case for time column
timestamps := br.timestamps
if len(timestamps) == 0 {
return
}
maxTimestamp := timestamps[len(timestamps)-1]
for _, timestamp := range timestamps[:len(timestamps)-1] {
if timestamp > maxTimestamp {
maxTimestamp = timestamp
}
}
bb := bbPool.Get()
bb.B = marshalTimestampRFC3339Nano(bb.B[:0], maxTimestamp)
v := bytesutil.ToUnsafeString(bb.B)
smp.updateState(v)
bbPool.Put(bb)
return
}
if c.isConst {
// Special case for const column
v := c.encodedValues[0]
smp.updateState(v)
return
}
for _, v := range c.getValues(br) {
smp.updateState(v)
}
}
func (smp *statsMaxProcessor) updateState(v string) {
if smp.hasMax && !lessString(smp.max, v) {
return

44
lib/logstorage/stats_min.go
View file

@ -4,6 +4,8 @@ import (
"slices"
"strings"
"unsafe"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
)
type statsMin struct {
@ -39,17 +41,13 @@ func (smp *statsMinProcessor) updateStatsForAllRows(br *blockResult) int {
if smp.sm.containsStar {
// Find the minimum value across all the columns
for _, c := range br.getColumns() {
for _, v := range c.getValues(br) {
smp.updateState(v)
}
smp.updateStateForColumn(br, c)
}
} else {
// Find the minimum value across the requested columns
for _, field := range smp.sm.fields {
c := br.getColumnByName(field)
for _, v := range c.getValues(br) {
smp.updateState(v)
}
smp.updateStateForColumn(br, c)
}
}
@ -84,6 +82,40 @@ func (smp *statsMinProcessor) mergeState(sfp statsProcessor) {
}
}
func (smp *statsMinProcessor) updateStateForColumn(br *blockResult, c *blockResultColumn) {
if c.isTime {
// Special case for time column
timestamps := br.timestamps
if len(timestamps) == 0 {
return
}
minTimestamp := timestamps[0]
for _, timestamp := range timestamps[1:] {
if timestamp < minTimestamp {
minTimestamp = timestamp
}
}
bb := bbPool.Get()
bb.B = marshalTimestampRFC3339Nano(bb.B[:0], minTimestamp)
v := bytesutil.ToUnsafeString(bb.B)
smp.updateState(v)
bbPool.Put(bb)
return
}
if c.isConst {
// Special case for const column
v := c.encodedValues[0]
smp.updateState(v)
return
}
for _, v := range c.getValues(br) {
smp.updateState(v)
}
}
func (smp *statsMinProcessor) updateState(v string) {
if smp.hasMin && !lessString(v, smp.min) {
return