Hacktoberfest 2026: los issues que los mantenedores marcaron para octubre, abiertos y aptos para principiantes. Explorar issues de Hacktoberfest

Live API: fractional-second Durations ("7.280s") fail to deserialize, dropping the whole message

Abierto
#1,120 1 comentario 0 reacciones 1 asignado Ver en GitHub

Los mantenedores suelen responder en 1 día

@hemasekhar-p ya está trabajando en esto.

Desde el 21/7/2026.

  • #1121 de @davetraction — abierto
  • #1340 de @copybara-service — abierto

Evaluación

Este issue todavía no se ha evaluado.

Descripción

priority: p2 type: bug
Description

CustomDurationDeserializer in JsonSerializable only parses whole-second Duration values (Long.parseLong), but the Gemini Live API server streams fractional-second Durations (e.g. "7.280s", "1.600s", "0.360s"). The parse throws NumberFormatException, which surfaces as:

SEVERE: Error deserializing message
com.google.genai.errors.GenAiIOException: Failed to deserialize the JSON node.
Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException:
  Cannot deserialize value of type `java.time.Duration` from String "7.280s":
  Cannot parse duration from string: 7.280s. Expected format 'Xs'.

Because this happens inside the Live WebSocket read path, the entire server message is dropped. When that message carries the model turn / a function call, the turn is lost — in a voice-agent app the assistant cuts off mid-sentence and no tool call fires.

Impact

Production voice-reception app on gemini-3.1-flash-live-preview (Vertex): ~700 of these errors in 24h across ~190 calls (~3–4 per call). Most calls survive because the read loop resumes on the next message, but an intermittent few break at the worst moment (mid first response / on the transfer tool call).

Root cause

src/main/java/com/google/genai/JsonSerializable.java, CustomDurationDeserializer:

long seconds = Long.parseLong(secondsPart);   // rejects "7.280"
return java.time.Duration.ofSeconds(seconds);
Suggested fix

Parse decimal seconds and keep sub-second precision:

double seconds = Double.parseDouble(secondsPart);
return java.time.Duration.ofNanos(Math.round(seconds * 1_000_000_000.0));

(Protobuf google.protobuf.Duration is routinely JSON-encoded with fractional seconds, so this is the expected wire format.)

Versions
  • google-genai 1.61.0 (also present in 1.62.0 — JsonSerializable unchanged)
  • Model: gemini-3.1-flash-live-preview, Vertex AI, Live API (BidiGenerateContent)
  • Java 25
Lenguaje dominante
Java
Estrellas
398
Forks
126
Merge medio
1 d 12 h
PR fusionados (30 d)
71

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

Más de googleapis/java-genai

Todos los issues de googleapis/java-genai

Issues similares

Más issues de Java

Recibe los nuevos issues en tu correo

Un resumen breve de issues de GitHub para principiantes.