jihoonson commented on issue #8922: ArrayIndexOutOfBoundsException on historical in class GroupByMergingQueryRunnerV2 when grouping on high-cardinality dimension URL: https://github.com/apache/incubator-druid/issues/8922#issuecomment-557243853 Hi @sascha-coenen, groupBy v2 supports [array-based aggregation and hash-based aggregation](https://druid.apache.org/docs/latest/querying/groupbyquery.html#differences-between-v1-and-v2). I'm wondering if this error relates to something else besides too high cardinality. Would you please try the same query with `forceHashAggregation = true` in your query context?
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
