为什么 Stackdriver 日志中会间歇性出现空行？

Question

我每分钟运行一个云函数。

Stackdriver 日志中间歇性出现空白行（请参阅下面的日志）。

我不相信这是因为我写的功能代码。

可以用这个 main.py 重新创建错误：

import logging

logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
logger.info(f"Logging {__name__}")


def main(event, context):
    logger.info("Message 1")
    logger.info("Message 2")
    logger.info("Message 3")

当 Cloud Scheduler 每分钟触发一次时，此函数会在几个小时内发出空白行。

如何预防这个问题？

更新：添加了两个扩展日志

{
 insertId: "000001-redacted-but-identical"  
 labels: {
  execution_id: "894004659398898"   
 }
 logName: "projects/redacted/logs/cloudfunctions.googleapis.com%2Fcloud-functions"  
 receiveTimestamp: "2019-12-13T23:05:01.545007423Z"  
 resource: {
  labels: {
   function_name: "recreate_blank_lines"    
   project_id: "redacted"    
   region: "us-central1"    
  }
  type: "cloud_function"   
 }
 severity: "INFO"  
 timestamp: "2019-12-13T23:05:00.344Z"  
 trace: "projects/redacted/traces/c4ed0267fd9fa4bf9133043bdfe5b1e0"  
}

{
 insertId: "000000-redacted-but-identical"  
 labels: {
  execution_id: "894004659398898"   
 }
 logName: "projects/redacted/logs/cloudfunctions.googleapis.com%2Fcloud-functions"  
 receiveTimestamp: "2019-12-13T23:05:01.545007423Z"  
 resource: {
  labels: {
   function_name: "recreate_blank_lines"    
   project_id: "redacted"    
   region: "us-central1"    
  }
  type: "cloud_function"   
 }
 severity: "INFO"  
 textPayload: "Message 2"  
 timestamp: "2019-12-13T23:05:00.345Z"  
 trace: "projects/redacted/traces/c4ed0267fd9fa4bf9133043bdfe5b1e0"

Answer 1

同时，您可以向 stackdriver 添加过滤器以跳过包含空字符串的日志。

Answer 2

一种可能是您的代码 - 或您导入的库 - print() 是 stdout 或 stderr 的空行，如 this is also soent to logs。

Answer 3

从 2020 年 2 月 3 日开始，这个问题对我们来说似乎已经消失了 13:44:20.476 PST

来自 issuetracker.google.com

的支持工程师

It seems like stackdriver is logging twice with one of the two logs having empty textpayload.

I also learnt that stackdriver will update their log delivery mechanism in Q1 2020, which will likely address this problem.

I will leave this isuee tracker as is for now. You will be notified when the issue is fixed in Q1 2020.

为什么 Stackdriver 日志中会间歇性出现空行？

Why do empty lines appear intermittently in Stackdriver logs?

python

python-3.x

google-cloud-logging

google-cloud-functions