Thanks for all the effort you’ve done for the community.
I’m building a new cluster now and I’m searching for recommendations about the heap size for the historical.
However, in the document, the recommended heap size is a little bit confusing.
In the performance FAQ: http://druid.io/docs/latest/operations/performance-faq.html
It says 250MB * numThreads.
And in the production cluster configuration: http://druid.io/docs/latest/configuration/production-cluster.html
It says 1GB per core.
However, in the historical configuration document: http://druid.io/docs/latest/configuration/historical.html
It says numThreads should be core number - 1, which seems to make the two recommendations above self-contradictory.
For instance, I have an 8-core, 32GB-memory server for one historical node.
According to the document, I should set the numThread to 7.
Then, for heap size, should I set it 250MB * 7 or 1GB * 7?
Or maybe I misunderstood something here?
Thanks in advance!