We have huge amount of data (5Billion records, 3TB in size) organized in parent / child type in one index to enable the joins. My first question is, how should I allocate shards for this big index in order to make the parent/child query more efficient? Right now doing queries will cause out of memory on several nodes, and I have 7 VMs, with 64GMem, and 1T disk. Each Es has 32Gmem allocated to it. The index has 20 shards.
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