[GitHub] [druid] gianm edited a comment on issue #5589: Java 11 compatibility

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

gianm edited a comment on issue #5589:
URL: https://github.com/apache/druid/issues/5589#issuecomment-854912422


   A bunch of our environments run on Java 11 as well, and we use the kafka, kinesis, datasketches, and s3 extensions pretty heavily. Datasketches requires Java 8 to compile (https://github.com/apache/datasketches-java#jdk8hotspot-is-required-to-compile) and I'm not sure if it officially supports running on Java 11 or not. As a data point, though: we have been using HLL, theta, and quantiles sketches on Java 11 for a while now without any apparent problem.
   
   The biggest Druid feature that we _don't_ use is any of the Hadoop integration. I'm not sure how well that works.
   
   So, a couple things:
   
   1. Has anyone been using Druid + Java 11 + the Hadoop integrations (either HDFS deep storage, or `index_hadoop` tasks, or both)? How well does it work?
   2. Does datasketches officially support Java 11? Are we still waiting for that in order to say that we do?
   
   It might be time to just say we support Java 11 in all cases, or if we can't resolve the above 2 questions, at least in _some_ cases.


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