apache/beam

[Bug][Go]: Metrics incremented in Setup methods are not recalled.

Open

Aperta il 6 giu 2023

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 (2 commenti) (0 reazioni) (0 assegnatari)Java (7313 star) (4097 fork)batch import
P3buggogood first issue

Descrizione

What happened?

Because the ParDo Setup context is uncached metrics initialized in Setup are lost, which is unexpected. Work done in setup, while logically outside of a bundle, will be under the context of the first bundle to execute that transform.

So there needs to be a way to transfer/extract the metrics from the Setup context so they are recorded back to the runner.

Issue Priority

Priority: 3 (minor)

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Guida contributor

Tech stack
go
Dominio
data
Tipo issue
bug
DifficoltàQuanto dovrebbe essere impegnativa per un nuovo contributor.
3
Tempo stimatoTempo stimato per completare e verificare uno scope piccolo.
1-2 days
Stato attivitàQuanto è probabile che la issue sia ancora attiva e reviewable.
stale
ChiarezzaQuanto chiaramente la issue descrive problema, scope e risultato atteso.
mostly clear
Prerequisiti
Go programmingApache Beam basicsmetrics concepts
Adatta ai principiantiQuanto la issue è adatta a contributor alla prima esperienza.
25
Direzione di ricerca
Investigate the uncached Setup context in pardo.go (line 104). Understand how metrics are currently lost and propose a mechanism to extract/transfer them from the Setup context to be recorded back to the runner. Consider caching the Setup context or piping metrics differently.