[GitHub] jiangpengcheng commented on issue #4218: [ContainerProxy] reading logs failed: spray.json.JsonParser happened occasionally

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jiangpengcheng commented on issue #4218: [ContainerProxy] reading logs failed: spray.json.JsonParser happened occasionally
URL: https://github.com/apache/incubator-openwhisk/issues/4218#issuecomment-455026211
 
 
   thanks for your explanation, @rabbah @markusthoemmes 
   
   I can reproduce the error now:
   
   1. setup an all-in-one OpenWhisk environment
   
   2. create a simple action
   
   ```nodejs
   function main(){
     return {"payload": "hello world"};
   }
   ```
   
   3. invoke this action: 
   ```
   for i in `seq 1 1000`; do wsk -i action invoke hello; done
   ```
   
   4. in the mean time, tailf the invoker's log
   
   ```bash
   tailf /tmp/wsklogs/invoker0/invoker0_logs.log | grep "reading logs failed"
   ```
   
   5. the invoker's log will report several `reading log failed` error
   
   ```
   [2019-01-17T02:42:39.708Z] [WARN] [#tid_cd8a243303818eda7c6b88d63a16e885] [ContainerProxy] reading logs failed: spray.json.JsonParser$ParsingException: Unexpected end-of-input at input index 0 (line 1, position 1), expected JSON Value:
   [2019-01-17T02:43:38.336Z] [WARN] [#tid_01b42ae3edd8c7c4670bd62fde8b99d5] [ContainerProxy] reading logs failed: spray.json.JsonParser$ParsingException: Unexpected end-of-input at input index 0 (line 1, position 1), expected JSON Value:
   [2019-01-17T02:43:38.336Z] [WARN] [#tid_ef00878a62beb5dbc580c3de5cc1618c] [ContainerProxy] reading logs failed: spray.json.JsonParser$ParsingException: Unexpected end-of-input at input index 0 (line 1, position 1), expected JSON Value:
   ```
   
   @markusthoemmes , after use `JsonFraming.objectScanner` this error doesn't appear, is there any reason that OpenWhisk didn't use this framing?

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