[GitHub] [incubator-druid] es1220 opened a new pull request #7504: Fix aggregatorFactory meta merge exception

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

es1220 opened a new pull request #7504: Fix aggregatorFactory meta merge exception
URL: https://github.com/apache/incubator-druid/pull/7504
 
 
   Fix HllSketch Metadata merge Exception 
   
   A `segmentMetadata` query with` merge = true` raises an exception because it does not implement the `getMergingFactory` method.
   ```json
   {
       "error": "Unknown exception",
       "errorMessage": "[io.druid.query.aggregation.datasketches.hll.HllSketchMergeAggregatorFactory] does not implement getMergingFactory(..)",
       "errorClass": "io.druid.java.util.common.UOE",
       "host": null
   }
   ```

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