[GitHub] jiangpengcheng opened a new issue #3511: the return data of `_bulk_doc` may not contain filed "rev", which will lead an spray json deserialization error

[GitBox <gi...@apache.org>]

jiangpengcheng opened a new issue #3511: the return data of `_bulk_doc` may not contain filed "rev", which will lead an spray json deserialization error
URL: https://github.com/apache/incubator-openwhisk/issues/3511
 
 
   The return data of `_bulk_docs` api of CouchDB is just like below if everything is ok:
   
   ```json
   [{"id":"DEBUG001","rev":"1-xxxxxxxxxxx"}]
   ```
   
   But if some documents are failed to update(e.g. conflict), the result will be:
   
   ```json
   [{"id":"DEBUG001","error":"conflict","reason":"Document update conflict."}]
   ```
   
   there is no `rev` filed in an item, this will cause `convertTo[BulkEntityResult]` raising an error:
   
   ```scala
   [2018-04-02T09:44:15.209Z] [ERROR] [#tid_449373] [CouchDbRestStore] [PUT] 'lambda-real_activations' internal error, failure: 'Object is missing required member 'rev'' [marker:database_saveDocument_error:142020306:3]
   [2018-04-02T09:44:15.209Z] [ERROR] [#tid_449373] [InvokerReactive] failed to record activation
   ```
   
   ## Environment details:
   
   * local deployment
   
   ## Steps to reproduce the issue:
   
   it's hard to reproduce a conflict error for bulk inserting activations(but we met this error in one of our env, don't know the reason, we are still digging into it), 
   
   1. write a test scala script:
   
   ```scala
       val source = """[{"id": "tttt", "error": "conflict", "reason": "Document update conflict"}]"""
       val jsonAst = source.parseJson
   
       val myObject = jsonAst.convertTo[Seq[BulkEntityResult]]
       println(myObject)
   ```   
   2.   run above code will raise an error
   
   ```scala
   [2018-04-02T17:51:23.329Z] [INFO] Slf4jLogger started
   Exception in thread "main" spray.json.DeserializationException: Object is missing required member 'rev'
   ......
   ```
   

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