# OutOfMemory due to large number of requests in TransportService.clientHandlers

**URL:** <https://discuss.elastic.co/t/outofmemory-due-to-large-number-of-requests-in-transportservice-clienthandlers/15637>\
**Category:** Elasticsearch\
**Created:** [February 6, 2014, 8:43am UTC](https://discuss.elastic.co/t/outofmemory-due-to-large-number-of-requests-in-transportservice-clienthandlers/15637 "2014-02-06T08:43:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Maxim\_Valyanskiy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/maxim_valyanskiy/32/787_2.png) [@Maxim\_Valyanskiy](https://discuss.elastic.co/u/Maxim_Valyanskiy)\
**Post date:** [February 6, 2014, 8:43am UTC](https://discuss.elastic.co/t/outofmemory-due-to-large-number-of-requests-in-transportservice-clienthandlers/15637/1 "2014-02-06T08:43:22Z")

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Hello!

One our node run out of memory. I loaded heap dump into Eclipse  
MemoryAnalyzer and found that 90% of memory is used by  
TransportService.clientHandlers hash map. I see a lot of index requests  
there (32 segments with about 7500 requests in each). Is it a bug on not?

Please look at m.a.t. export here: [https://gist.github.com/maxcom/8840468](https://gist.github.com/maxcom/8840468)

Maxim

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**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, 1:52am UTC](https://discuss.elastic.co/t/outofmemory-due-to-large-number-of-requests-in-transportservice-clienthandlers/15637/2 "2017-07-06T01:52:10Z")

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Closed on July 6, 2017, 1:52am UTC