By default Elasticsearch will write a heap dump when it encounters an OutOfMemoryError. The best thing to do is to open this heap dump (e.g. in MAT) and investigate what was using all the heap.
By default Elasticsearch will write a heap dump when it encounters an OutOfMemoryError. The best thing to do is to open this heap dump (e.g. in MAT) and investigate what was using all the heap.
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