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Update explain analyze to output data related to the iterator scanners

pull/9673/head
Jonathan A. Sternberg 2018-04-02 14:49:22 -05:00
parent dc71a8d82b
commit 8aeb0fa0c6
1 changed files with 41 additions and 0 deletions
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41
query/select.go
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@ -5,8 +5,10 @@ import (
"fmt"
"io"
"sort"
"strings"
"time"
"github.com/influxdata/influxdb/pkg/tracing"
"github.com/influxdata/influxql"
)
@ -534,6 +536,15 @@ func (b *exprIteratorBuilder) callIterator(ctx context.Context, expr *influxql.C
}
func buildCursor(ctx context.Context, stmt *influxql.SelectStatement, ic IteratorCreator, opt IteratorOptions) (Cursor, error) {
span := tracing.SpanFromContext(ctx)
if span != nil {
span = span.StartSpan("build_cursor")
defer span.Finish()
span.SetLabels("statement", stmt.String())
ctx = tracing.NewContextWithSpan(ctx, span)
}
switch opt.Fill {
case influxql.NumberFill:
if v, ok := opt.FillValue.(int); ok {
@ -665,6 +676,19 @@ func buildCursor(ctx context.Context, stmt *influxql.SelectStatement, ic Iterato
}
func buildAuxIterator(ctx context.Context, ic IteratorCreator, sources influxql.Sources, opt IteratorOptions) (Iterator, error) {
span := tracing.SpanFromContext(ctx)
if span != nil {
span = span.StartSpan("iterator_scanner")
defer span.Finish()
auxFieldNames := make([]string, len(opt.Aux))
for i, ref := range opt.Aux {
auxFieldNames[i] = ref.String()
}
span.SetLabels("auxiliary_fields", strings.Join(auxFieldNames, ", "))
ctx = tracing.NewContextWithSpan(ctx, span)
}
inputs := make([]Iterator, 0, len(sources))
if err := func() error {
for _, source := range sources {
@ -725,6 +749,23 @@ func buildAuxIterator(ctx context.Context, ic IteratorCreator, sources influxql.
}
func buildFieldIterator(ctx context.Context, expr influxql.Expr, ic IteratorCreator, sources influxql.Sources, opt IteratorOptions, selector, writeMode bool) (Iterator, error) {
span := tracing.SpanFromContext(ctx)
if span != nil {
span = span.StartSpan("iterator_scanner")
defer span.Finish()
labels := []string{"expr", expr.String()}
if len(opt.Aux) > 0 {
auxFieldNames := make([]string, len(opt.Aux))
for i, ref := range opt.Aux {
auxFieldNames[i] = ref.String()
}
labels = append(labels, "auxiliary_fields", strings.Join(auxFieldNames, ", "))
}
span.SetLabels(labels...)
ctx = tracing.NewContextWithSpan(ctx, span)
}
input, err := buildExprIterator(ctx, expr, ic, sources, opt, selector, writeMode)
if err != nil {
return nil, err