# StackOverflowError: null and elasticsearch dying
**URL:** https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595
**Category:** Elasticsearch
**Created:** [September 9, 2019, 4:06am UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595 "2019-09-09T04:06:18Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Kate\_Fox](https://discuss.elastic.co/u/Kate_Fox)
#### Post date: [September 9, 2019, 4:06am UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595/1 "2019-09-09T04:06:18Z")
Getting a stack overlow error with Elasticsearch version[6.6.2]
> [2019-09-09T04:01:07,798][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [da-data2] fatal error in thread [elasticsearch[da-data2][flush][T#1]], exiting
java.lang.StackOverflowError: null
at org.elasticsearch.common.io.stream.StreamOutput.writeVInt(StreamOutput.java:255) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.ElasticsearchException.writeStackTraces(ElasticsearchException.java:733) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:966) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:964) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.ElasticsearchException.writeStackTraces(ElasticsearchException.java:743) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:966) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:964) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.ElasticsearchException.writeStackTraces(ElasticsearchException.java:743) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:966) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:964) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.ElasticsearchException.writeStackTraces(ElasticsearchException.java:743) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:966) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:964) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.ElasticsearchException.writeStackTraces(ElasticsearchException.java:743) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:966) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.common.io.stream.StreamOutput.writeException(StreamOutput.java:964) ~[elasticsearch-6.6.2.jar:6.6.2]
at org.elasticsearch.ElasticsearchException.writeStackTraces(ElasticsearchException.java:743) ~[elasticsearch-6.6.2.jar:6.6.2]
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [September 9, 2019, 6:11am UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595/2 "2019-09-09T06:11:34Z")
What does your configuration and setup look like? Where are you running this cluster? Which operating system are you using? What type of storage are you using?
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### Author:  [@Kate\_Fox](https://discuss.elastic.co/u/Kate_Fox)
#### Post date: [September 9, 2019, 6:23am UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595/3 "2019-09-09T06:23:03Z")
We have three data nodes, 160 shards. Running on ubuntu in ec2.
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [September 9, 2019, 7:11am UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595/4 "2019-09-09T07:11:22Z")
Using EBS storage?
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### Author:  [@Kate\_Fox](https://discuss.elastic.co/u/Kate_Fox)
#### Post date: [September 9, 2019, 4:09pm UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595/5 "2019-09-09T16:09:57Z")
Yes, we are using EBS
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 7, 2019, 4:10pm UTC](https://discuss.elastic.co/t/stackoverflowerror-null-and-elasticsearch-dying/198595/6 "2019-10-07T16:10:02Z")
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