If you are using groovy scripts look at this topics: https://discuss.elastic.co/t/elastic-search-using-a-lot-of-memory-gc-thrashing/48695 and https://discuss.elastic.co/t/heap-issue-after-upgrading-elasticsearch-from-v1-7-5-to-v2-4-1/65612
If you are using groovy scripts look at this topics: https://discuss.elastic.co/t/elastic-search-using-a-lot-of-memory-gc-thrashing/48695 and https://discuss.elastic.co/t/heap-issue-after-upgrading-elasticsearch-from-v1-7-5-to-v2-4-1/65612
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