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Fix timestamp() method for vector selector inside paren (#8164)

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Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>
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Ganesh Vernekar 2020-11-09 18:21:50 +05:30 committed by GitHub
parent f8ba0ed906
commit d30da66d77
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2 changed files with 4 additions and 0 deletions
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1
promql/engine.go
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@ -1027,6 +1027,7 @@ func (ev *evaluator) eval(expr parser.Expr) (parser.Value, storage.Warnings) {
// Matrix evaluation always returns the evaluation time,
// so this function needs special handling when given
// a vector selector.
unwrapParenExpr(&e.Args[0])
vs, ok := e.Args[0].(*parser.VectorSelector)
if ok {
return ev.rangeEval(func(v []parser.Value, enh *EvalNodeHelper) (Vector, storage.Warnings) {

3
promql/testdata/functions.test vendored
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@ -300,6 +300,9 @@ eval instant at 0s timestamp(metric)
eval instant at 5s timestamp(metric)
{} 0
eval instant at 5s timestamp(((metric)))
{} 0
eval instant at 10s timestamp(metric)
{} 10