I recently found that ES service stops after few hours of activity. I am using version 1.5.2 and the server contains 8g of RAM and 155g of heap. I changed value of ES_HEAP_SIZE=1024m in /etc/default/elasticsearch file, but it did not work. I did not find any significant in ES logs. What should be the cause behind this? Do I set a crontab for restarting the service after 5 hours of duration? Though it is not a proper way to resolve, I would have to do if I do not find anything to solve this.
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