> The 32GB memory limit is indeed real if you use compressed pointers (which you need to configure on the JVM, ES does this by default).
But the article makes is sound like you should stay below 32G of heap to avoid using oop compression, and this is completely wrong. Setting -Xmx over 32G on a 64 bit architecture disables oop compression by default, and setting it lower enables it. The official ES docs also recommend you keep your heap below 32G, but they say you should do this to ensure oop compression is on: https://www.elastic.co/guide/en/elasticsearch/reference/curr....
But the article makes is sound like you should stay below 32G of heap to avoid using oop compression, and this is completely wrong. Setting -Xmx over 32G on a 64 bit architecture disables oop compression by default, and setting it lower enables it. The official ES docs also recommend you keep your heap below 32G, but they say you should do this to ensure oop compression is on: https://www.elastic.co/guide/en/elasticsearch/reference/curr....