# OOME When large segments merge **URL:** \ **Category:** Elasticsearch\ **Created:** [March 12, 2015, 8:20pm UTC](https://discuss.elastic.co/t/oome-when-large-segments-merge/22642 "2015-03-12T20:20:48Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![mark\_2](https://avatars.discourse-cdn.com/v4/letter/m/b782af/32.png) [@mark\_2](https://discuss.elastic.co/u/mark_2)\ **Post date:** [March 12, 2015, 8:20pm UTC](https://discuss.elastic.co/t/oome-when-large-segments-merge/22642/1 "2015-03-12T20:20:48Z")
I've noticed periodically that data nodes in my cluster will run out of heap space when large segments start merging. I attached a screenshot of what marvel looked like leading up to the OOME on one of my data nodes. My question is, generally speaking, what knobs should I be turning to throttle resource consumption when large segment files are being merged? I'm running ES version 1.4.1. Thanks, Mark -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/35f2c096-ee1e-4a30-a11c-0177e84356ff%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/35f2c096-ee1e-4a30-a11c-0177e84356ff%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![mikemccand](https://avatars.discourse-cdn.com/v4/letter/m/f04885/32.png) [@mikemccand](https://discuss.elastic.co/u/mikemccand)\ **Post date:** [March 12, 2015, 8:59pm UTC](https://discuss.elastic.co/t/oome-when-large-segments-merge/22642/2 "2015-03-12T20:59:51Z")
Do you have many fields with norms enabled? Mike McCandless [http://www.elastic.co](http://www.elastic.co) On Thu, Mar 12, 2015 at 1:20 PM, Mark Greene [mark@evertrue.com](mailto:mark@evertrue.com) wrote: > I've noticed periodically that data nodes in my cluster will run out of > heap space when large segments start merging. I attached a screenshot of > what marvel looked like leading up to the OOME on one of my data nodes. > > My question is, generally speaking, what knobs should I be turning to > throttle resource consumption when large segment files are being merged? > > I'm running ES version 1.4.1. > > Thanks, > Mark > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/35f2c096-ee1e-4a30-a11c-0177e84356ff%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/35f2c096-ee1e-4a30-a11c-0177e84356ff%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/35f2c096-ee1e-4a30-a11c-0177e84356ff%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/35f2c096-ee1e-4a30-a11c-0177e84356ff%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAKHUQPi4\_NZdB\_0xZ1-13ke2qJOUr%3DuH9BUzHTj5Em0GWJ3uNg%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAKHUQPi4_NZdB_0xZ1-13ke2qJOUr%3DuH9BUzHTj5Em0GWJ3uNg%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:27am UTC](https://discuss.elastic.co/t/oome-when-large-segments-merge/22642/3 "2017-07-06T00:27:07Z")