# StackOverflowError triggering cluster crash
**URL:** https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550
**Category:** Elasticsearch
**Created:** [September 30, 2021, 7:53am UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550 "2021-09-30T07:53:13Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@bhargava\_kovi](https://discuss.elastic.co/u/bhargava_kovi)
#### Post date: [September 30, 2021, 7:53am UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/1 "2021-09-30T07:53:13Z")
The cluster was suddenly crashed mentioning the below stack trace.
we are using version ES 7.10.1.
I tried to look for a similar issue on [StackOverflowError in Lucene](https://discuss.elastic.co/t/stackoverflowerror-in-lucene/133659) but couldnt find much on it.
Can anyone help to understand what it means and how it can be avoided?
```auto
[2021-09-29T13:12:30,500][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [XXXXX.bc] fatal error in thread [elasticsearch[XXXXX.bc][search][T#1]], exiting
java.lang.StackOverflowError: null
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
at org.apache.lucene.util.graph.GraphTokenStreamFiniteStrings.articulationPointsRecurse(GraphTokenStreamFiniteStrings.java:277) ~[lucene-core-8.7.0.jar:8.7.0 2dc63e901c60cda27ef3b744bc554f1481b3b067 - atrisharma - 2020-10-29 19:35:28]
```
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 30, 2021, 8:51am UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/2 "2021-09-30T08:51:04Z")
Welcome!
Please don't post images of text as they are hard to read, may not display correctly for everyone, and are not searchable.
Instead, paste the text and format it with `` icon or pairs of triple backticks (```), and check the preview window to make sure it's properly formatted before posting it. This makes it more likely that your question will receive a useful answer.
It would be great if you could update your post to solve this.
> [@bhargava\_kovi](#):
>
> we are using version ES 7.10.1.
The first thing to do is to upgrade to 7.15.0. The bug might have been fixed since then.
---
### Author:  [@bhargava\_kovi](https://discuss.elastic.co/u/bhargava_kovi)
#### Post date: [September 30, 2021, 12:01pm UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/3 "2021-09-30T12:01:02Z")
Thanks for the feedback, I have now added the stack trace instead of image
we will for sure plan to upgrade but would be great to know if this is bug which was solved in higher releases (or) if its related to something else, Otherwise, we may still observe issue even after the upgrade.
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 30, 2021, 1:21pm UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/4 "2021-09-30T13:21:18Z")
I don't know.
May be someone from the Lucene team would know.
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [September 30, 2021, 1:44pm UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/5 "2021-09-30T13:44:46Z")
Are you by any chance using very large query strings? Can you identify any queries that fail around the time the exception is thrown?
---
### Author:  [@bhargava\_kovi](https://discuss.elastic.co/u/bhargava_kovi)
#### Post date: [September 30, 2021, 5:58pm UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/6 "2021-09-30T17:58:21Z")
It could be possible as we expose a gui for textual search and user can place a text as input(not more than 500 chars in worst possible situation). The Elasticsearch log has not logged any queries, so its difficult to find out whats the exact query/queries that might during the point of crash.
If GC stats can help, please find the analysis
The error happened on Sep 29 13h and strangely it was observed that there was more activity from 28th. Will this might add up to the error?
---
### Author:  [@jpountz](https://discuss.elastic.co/u/jpountz)
#### Post date: [October 5, 2021, 6:33am UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/7 "2021-10-05T06:33:33Z")
Please file a bug at [https://issues.apache.org/jira/browse/LUCENE](https://issues.apache.org/jira/browse/LUCENE). I'm not familiar with this part of the code, but Lucene should never allow code to run into stack overflows. So we'll need to add protections against this as a minimum, and maybe someone will have a good idea how to avoid so many levels of recursion in the first place.
---
### Author:  [@jpountz](https://discuss.elastic.co/u/jpountz)
#### Post date: [October 15, 2021, 1:43pm UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/8 "2021-10-15T13:43:36Z")
I opened [[LUCENE-10181] GraphTokenStreamFiniteStrings#articulationPointsRecurse can run into stack overflows - ASF JIRA](https://issues.apache.org/jira/browse/LUCENE-10181).
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 12, 2021, 1:44pm UTC](https://discuss.elastic.co/t/stackoverflowerror-triggering-cluster-crash/285550/9 "2021-11-12T13:44:20Z")
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