I need to run
force_merge frequently to have
max_num_segments = 1. It takes lot of time. I want to make force_merge faster. What are the possible option do I have?
I read and found that max size of threads available for force_merge is 1. I changed that to 4 as I have 8 thread machine by changing
elasticsearch.yml config file. I can see the respective change as well in node setting.
I checked during force_merge execution, it shows as 1 active thread even though current thread size is 4 for force_merge.