ESTATUSTRUNC grpc protocol_error ai_generated true

INTERNAL: grpc: status details truncated: received 4096 bytes but expected 8192

ID: grpc/status-details-truncated

Also available as: JSON · Markdown · 中文
90%Fix Rate
85%Confidence
1Evidence
2024-06-20First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
gRPC v1.58.0 active — — —
gRPC v1.61.0 active — — —
gRPC v1.65.0 active — — —

Root Cause

The gRPC status details in the response trailer are larger than the configured max receive message size, causing truncation and an internal error.

generic

中文

响应尾部中的 gRPC 状态详情超过了配置的最大接收消息大小，导致截断并引发内部错误。

Official Documentation

https://grpc.io/docs/guides/status-details/

Workarounds

  1. 95% success Increase the client's max receive message size to accommodate larger status details: `channel = grpc.insecure_channel(target, options=[('grpc.max_receive_message_length', 16 * 1024 * 1024)])` 
    Increase the client's max receive message size to accommodate larger status details: `channel = grpc.insecure_channel(target, options=[('grpc.max_receive_message_length', 16 * 1024 * 1024)])`
  2. 80% success On the server side, reduce the size of status details by using concise error messages or splitting details across multiple RPCs. 
    On the server side, reduce the size of status details by using concise error messages or splitting details across multiple RPCs.
  3. 85% success If using gRPC-Web, configure the proxy to increase the max trailer size (e.g., Envoy's `max_request_headers_kb`). 
    If using gRPC-Web, configure the proxy to increase the max trailer size (e.g., Envoy's `max_request_headers_kb`).

中文步骤

  1. Increase the client's max receive message size to accommodate larger status details: `channel = grpc.insecure_channel(target, options=[('grpc.max_receive_message_length', 16 * 1024 * 1024)])`
  2. On the server side, reduce the size of status details by using concise error messages or splitting details across multiple RPCs.
  3. If using gRPC-Web, configure the proxy to increase the max trailer size (e.g., Envoy's `max_request_headers_kb`).

Dead Ends

Common approaches that don't work:

  1. Increasing the client's max send message size to match the expected size. 90% fail

    The error is about receiving, not sending; max send size controls outgoing payloads, not incoming trailers.

  2. Setting the environment variable GRPC_VERBOSITY=DEBUG to get more details. 95% fail

    Verbose logging does not resolve protocol-level truncation; it only adds noise.

  3. Reducing the number of fields in the status details on the server side without checking max receive size. 50% fail

    If the max receive size is too small, even a single large detail can cause truncation; the fix must target the limit.