Context - I want to increase the performance of indexing. We have implemented a logstash kind of architecture where the indices are split per week. So at a time we have some indices where we write data but we have a lot of indices where we don't index but search only.
The usual question is "What optimization can we do?"
I got some idea from https://www.elastic.co/blog/performance-considerations-elasticsearch-indexing
There is a clause there where we can increase the indices.memory.index_buffer_size but it is a node level setting.
Is there a way to manually override the above setting for only the indices being written? I want to increase the buffer size for some indices but keep it as default for other indices.