[GitHub] [incubator-druid] gipeshka opened a new issue #8280: The metrics specification on ingestSegment firehose is not clear

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

gipeshka opened a new issue #8280: The metrics specification on ingestSegment firehose is not clear
URL: https://github.com/apache/incubator-druid/issues/8280
 
 
   ### Affected Version
   
   0.15
   
   ### Description
   
   This issue actually addresses closed https://github.com/apache/incubator-druid/issues/2956
   
   The issue that I encountered was exactly the same as in the referenced issue: when ingestSegment firehose is used to rollup data all metrics were 0.
   
   However after short investigation I found out that I have to put dimensions into `metrics` part of `ioConfig.firehose` like this:
   
   ```json
       "ioConfig":{  
         "type":"index",
         "firehose":{  
           "type":"ingestSegment",
           "dataSource":"rawSource",
           "interval":"2019-08-07T10:00:00.000/2019-08-07T11:00:00.000",
           "metrics":[  
             "dimension1",
             "dimension2"
           ]
         }
       }
   ```
   
   then these `dimension1` and `dimension2` can be used to build new metrics.
   
   I think this thing should be addressed in the documentation at https://druid.apache.org/docs/latest/ingestion/firehose.html `IngestSegmentFirehose`.

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