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weibocom / wqs

微博的消息服务中间件。
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Got "SERVER_ERROR engine error Timeout" error while reading from an empty queue #10

Closed icycrystal4 closed 8 years ago

icycrystal4 commented 8 years ago

WQS Env

version: dev_beta   
commit: a819409e2c92832bf81946e0800b001d03a6910d

Expected behavior

On memcached protocol, an empty value with "END" sent to the client, when the 'key' is not found or expired.

get group1.test1
END

Actual behavior

get group1.test1
SERVER_ERROR engine error Timeout

Steps to reproduce the issue

  1. make build-qservice
  2. ./qservice -config ./config.properties
  3. printf "get group1.test1\r\n" | nc localhost 11211

    Additional information you deem important

Timeout error is a look of confusion for biz clients, because timeout may happened out of limit of no messages.

dup2X commented 8 years ago

fixed by commit https://github.com/weibocom/wqs/commit/b4a25656011f8a29b3b9da438838a5f461ad0965