Custom script processor (Painless) gives stackOverFlow Error and causes node crash #101881
Description
Elasticsearch Version
7.17.7
Installed Plugins
No response
Java Version
17.0.8.1
OS Version
Linux ki0566 5.15.0-84-generic #93~20.04.1-Ubuntu SMP
Problem Description
Whenever I try to execute the below custom script the elasticsearch node is always getting crashed with the StackOverflowError
Script:
{"script": {"tag": "Custom Script##1", "ignore_failure": true, "lang": "painless", "source": " ctx.a=ctx;"}}
'''
[2023-11-07T11:45:30,094][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [my_es_node] fatal error in thread [elasticsearch[my_es_node][management][T#4]], exiting
java.lang.StackOverflowError: null
at org.elasticsearch.ingest.IngestDocument.deepCopy(IngestDocument.java:784) ~[elasticsearch-7.17.7.jar:7.17.7]
at org.elasticsearch.ingest.IngestDocument.deepCopy(IngestDocument.java:777) ~[elasticsearch-7.17.7.jar:7.17.7]
'''
This is caused due to the circular dependency between the variables. Is there a way we can catch this error and throw it as an exception and avoid ES node crashes?
Steps to Reproduce
** Any simulate/index API with the above mentioned script will reproduce the error
Logs (if relevant)
[2023-11-07T11:45:30,094][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [my_es_node] fatal error in thread [elasticsearch[my_es_node][management][T#4]], exiting
java.lang.StackOverflowError: null
at org.elasticsearch.ingest.IngestDocument.deepCopy(IngestDocument.java:784) ~[elasticsearch-7.17.7.jar:7.17.7]
at org.elasticsearch.ingest.IngestDocument.deepCopy(IngestDocument.java:777) ~[elasticsearch-7.17.7.jar:7.17.7]