Failed detector not reported in SIEM

[honzakral]

Kibana version: 7.9.0

Elasticsearch version: 7.9.0

Original install method (e.g. download page, yum, from source, etc.): docker

Describe the bug: Detector fails to create a document in the signal index yet no error or exception is reported, status of detector is "success"

Steps to reproduce:

1. create an index with document with incompatible mappings with signals, for example: {"message": {"not": "text"}}
2. Create a simple query detector on that index

Expected behavior: I would expect to see the error reported

Provide logs and/or server output (if relevant):

{"type":"log","@timestamp":"2020-08-19T14:13:54Z","tags":["error","plugins","securitySolution","plugins","securitySolution"],"pid":6,"message":"[-] bulkResponse had errors with responses of: {\"failed to parse field [message] of type [text] in document with id '1ee2259a9c261a52c62ece88816b9b8f069f0f62c88cc8df4a99441a22c595e6'. Preview of field's value: '{doc_count=14, key=XXXXX}'\":{\"count\":1,\"statusCode\":400},\"failed to parse field [message] of type [text] in document with id '91c5e4722750c8a0062dce26334ecb749a956d0a4f3e2c39eb9f2b718a67ef6b'. Preview of field's value: '{doc_count=14, key=XXXXXX}'\":{\"count\":1,\"statusCode\":400},\"failed to parse field [message] of type [text] in document with id 'f1216d508b3dc841fd289bf5c4b5ca59dc0e393d769606d1b2a2734bdf003dbb'. Preview of field's value: '{doc_count=7, key=XXXXX}'\":{\"count\":1,\"statusCode\":400}}"}

[elasticmachine]

Pinging @elastic/siem (Team:SIEM)

[elasticmachine]

Pinging @elastic/kibana-security (Team:Security Solution)

[FrankHassanabad]

This should be fixed by:
#77687

for 7.10.0+ now. Closing out.