# ES heap size slowly but surely increasing **URL:** \ **Category:** Elasticsearch\ **Created:** [June 24, 2014, 10:01am UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285 "2014-06-24T10:01:43Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Aldian](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aldian/32/906_2.png) [@Aldian](https://discuss.elastic.co/u/Aldian)\ **Post date:** [June 24, 2014, 10:01am UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285/1 "2014-06-24T10:01:43Z")
Hi I upgraded to 1.2.1 and set memory options to 2GB. Two weeks have passed now and every day I have been checking heap memory level with Bigdesk. At first I was not sure, but now it is clearly increasing little by little. One day after I restarted ES it grew to approximately 1.3 GB of used Heap Memory, and now we are at 1.6GB, which make me guess it is leaking around 150 Mo Heap Memory a week. I am the only one experiencing such problem? And do you know what could cause it? Best, Aldian -- 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/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [June 24, 2014, 10:03am UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285/2 "2014-06-24T10:03:34Z")
Are you indexing new data? Regards, Mark Walkom Infrastructure Engineer Campaign Monitor email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com) web: [www.campaignmonitor.com](http://www.campaignmonitor.com) On 24 June 2014 20:01, Aldian [aldian.gp@gmail.com](mailto:aldian.gp@gmail.com) wrote: > Hi > > I upgraded to 1.2.1 and set memory options to 2GB. Two weeks have passed > now and every day I have been checking heap memory level with Bigdesk. > > At first I was not sure, but now it is clearly increasing little by > little. One day after I restarted ES it grew to approximately 1.3 GB of > used Heap Memory, and now we are at 1.6GB, which make me guess it is > leaking around 150 Mo Heap Memory a week. > > I am the only one experiencing such problem? And do you know what could > cause it? > > Best, > > Aldian > > -- > 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/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%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/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Aldian](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aldian/32/906_2.png) [@Aldian](https://discuss.elastic.co/u/Aldian)\ **Post date:** [June 24, 2014, 1:38pm UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285/3 "2014-06-24T13:38:03Z")
Yes I am, but... This data should be stored somewhere on the disk, right? 2014-06-24 12:03 GMT+02:00 Mark Walkom [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com): > Are you indexing new data? > > Regards, > Mark Walkom > > Infrastructure Engineer > Campaign Monitor > email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com) > web: [www.campaignmonitor.com](http://www.campaignmonitor.com) > > On 24 June 2014 20:01, Aldian [aldian.gp@gmail.com](mailto:aldian.gp@gmail.com) wrote: > > > Hi > > > > I upgraded to 1.2.1 and set memory options to 2GB. Two weeks have passed > > now and every day I have been checking heap memory level with Bigdesk. > > > > At first I was not sure, but now it is clearly increasing little by > > little. One day after I restarted ES it grew to approximately 1.3 GB of > > used Heap Memory, and now we are at 1.6GB, which make me guess it is > > leaking around 150 Mo Heap Memory a week. > > > > I am the only one experiencing such problem? And do you know what could > > cause it? > > > > Best, > > > > Aldian > > > > -- > > 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/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com) > > [https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%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 a topic in the > Google Groups "elasticsearch" group. > To unsubscribe from this topic, visit > [https://groups.google.com/d/topic/elasticsearch/eMA\_PCZQLss/unsubscribe](https://groups.google.com/d/topic/elasticsearch/eMA_PCZQLss/unsubscribe). > To unsubscribe from this group and all its topics, 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/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com) > [https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com?utm_medium=email&utm_source=footer) > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- Cordialement, Aldian -- 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/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W\_Gi4m\_bA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W_Gi4m_bA%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [June 24, 2014, 11:21pm UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285/4 "2014-06-24T23:21:15Z")
Yes, but there is still overhead that the cluster needs to store in memory, the metadata about the data. Regards, Mark Walkom Infrastructure Engineer Campaign Monitor email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com) web: [www.campaignmonitor.com](http://www.campaignmonitor.com) On 24 June 2014 23:38, Aldian [aldian.gp@gmail.com](mailto:aldian.gp@gmail.com) wrote: > Yes I am, but... This data should be stored somewhere on the disk, right? > > 2014-06-24 12:03 GMT+02:00 Mark Walkom [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com): > > > Are you indexing new data? > > > > Regards, > > Mark Walkom > > > > Infrastructure Engineer > > Campaign Monitor > > email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com) > > web: [www.campaignmonitor.com](http://www.campaignmonitor.com) > > > > On 24 June 2014 20:01, Aldian [aldian.gp@gmail.com](mailto:aldian.gp@gmail.com) wrote: > > > > > Hi > > > > > > I upgraded to 1.2.1 and set memory options to 2GB. Two weeks have passed > > > now and every day I have been checking heap memory level with Bigdesk. > > > > > > At first I was not sure, but now it is clearly increasing little by > > > little. One day after I restarted ES it grew to approximately 1.3 GB of > > > used Heap Memory, and now we are at 1.6GB, which make me guess it is > > > leaking around 150 Mo Heap Memory a week. > > > > > > I am the only one experiencing such problem? And do you know what could > > > cause it? > > > > > > Best, > > > > > > Aldian > > > > > > -- > > > 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/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com) > > > [https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%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 a topic in the > > Google Groups "elasticsearch" group. > > To unsubscribe from this topic, visit > > [https://groups.google.com/d/topic/elasticsearch/eMA\_PCZQLss/unsubscribe](https://groups.google.com/d/topic/elasticsearch/eMA_PCZQLss/unsubscribe). > > To unsubscribe from this group and all its topics, 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/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com) > > [https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com?utm_medium=email&utm_source=footer) > > . > > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > -- > Cordialement, > > Aldian > > -- > 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/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W\_Gi4m\_bA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W_Gi4m_bA%40mail.gmail.com) > [https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W\_Gi4m\_bA%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W_Gi4m_bA%40mail.gmail.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/CAEM624aD%3DBCMESSSDjT6Jd7nbmp\_1vNrMzXOwSRhB0s39gop-A%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624aD%3DBCMESSSDjT6Jd7nbmp_1vNrMzXOwSRhB0s39gop-A%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Michael\_Hart](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/michael_hart/32/65937_2.png) [@Michael\_Hart](https://discuss.elastic.co/u/Michael_Hart)\ **Post date:** [June 25, 2014, 2:57pm UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285/5 "2014-06-25T14:57:55Z")
It's entirely normal for ES (or any Java program) to use 75-80% of the heap during normal operation. The Garbage Collector will take care of things, and is typically a bit "lazy" about cleaning up. mike On Tuesday, June 24, 2014 7:21:49 PM UTC-4, Mark Walkom wrote: > Yes, but there is still overhead that the cluster needs to store in > memory, the metadata about the data. > > Regards, > Mark Walkom > > Infrastructure Engineer > Campaign Monitor > email: [ma...@campaignmonitor.com](mailto:ma...@campaignmonitor.com) \ > web: [www.campaignmonitor.com](http://www.campaignmonitor.com) > > On 24 June 2014 23:38, Aldian \<[aldi...@gmail.com](mailto:aldi...@gmail.com) \\> wrote: > > > Yes I am, but... This data should be stored somewhere on the disk, right? > > > > 2014-06-24 12:03 GMT+02:00 Mark Walkom \<[ma...@campaignmonitor.com](mailto:ma...@campaignmonitor.com) > > \\>: > > > > > Are you indexing new data? > > > > > > Regards, > > > Mark Walkom > > > > > > Infrastructure Engineer > > > Campaign Monitor > > > email: [ma...@campaignmonitor.com](mailto:ma...@campaignmonitor.com) \ > > > web: [www.campaignmonitor.com](http://www.campaignmonitor.com) > > > > > > On 24 June 2014 20:01, Aldian \<[aldi...@gmail.com](mailto:aldi...@gmail.com) \\> wrote: > > > > > > > Hi > > > > > > > > I upgraded to 1.2.1 and set memory options to 2GB. Two weeks have > > > > passed now and every day I have been checking heap memory level with > > > > Bigdesk. > > > > > > > > At first I was not sure, but now it is clearly increasing little by > > > > little. One day after I restarted ES it grew to approximately 1.3 GB of > > > > used Heap Memory, and now we are at 1.6GB, which make me guess it is > > > > leaking around 150 Mo Heap Memory a week. > > > > > > > > I am the only one experiencing such problem? And do you know what could > > > > cause it? > > > > > > > > Best, > > > > > > > > Aldian > > > > > > > > -- > > > > 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 [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > > > > > > > To view this discussion on the web visit > > > > [https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com) > > > > [https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/9481c6a9-0690-4ac5-be26-d913e1700c0e%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 a topic in the > > > Google Groups "elasticsearch" group. > > > To unsubscribe from this topic, visit > > > [https://groups.google.com/d/topic/elasticsearch/eMA\_PCZQLss/unsubscribe](https://groups.google.com/d/topic/elasticsearch/eMA_PCZQLss/unsubscribe). > > > To unsubscribe from this group and all its topics, send an email to > > > [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > > To view this discussion on the web visit > > > [https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com) > > > [https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-\_u%2B-v2Xxq7SvfA%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAEM624afa-DiX%2B4C48wCUZhhgXA16YkzEwx-_u%2B-v2Xxq7SvfA%40mail.gmail.com?utm_medium=email&utm_source=footer) > > > . > > > > > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > > > -- > > Cordialement, > > > > Aldian > > > > -- > > 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 [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \. > > To view this discussion on the web visit > > [https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W\_Gi4m\_bA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W_Gi4m_bA%40mail.gmail.com) > > [https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W\_Gi4m\_bA%40mail.gmail.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/CAECUaLw7F-p9Rnz1Bvfr2Pwu1Jzyan0QFi8zp%2Bz-3W_Gi4m_bA%40mail.gmail.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/f9fa0c8b-8ba8-4a0f-b816-f6ab7ee47773%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f9fa0c8b-8ba8-4a0f-b816-f6ab7ee47773%40googlegroups.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, 1:19am UTC](https://discuss.elastic.co/t/es-heap-size-slowly-but-surely-increasing/18285/6 "2017-07-06T01:19:47Z")