[druid-user] Exception when indexing service job is done but no data.

The errors you are seeing seems related to https://github.com/druid-io/druid/issues/1962

Since your task status is success, the data should be indexed properly and pushed to deep storage.

If you are not able to query the data, there might be issues with segment loading on the historical nodes.

Can you check that your historical nodes have enough free capacity and are not having any exceptions while trying to load the segments ?