putMapping illegal_argument_exception without message - node.js

Question

I try to call putMapping from elasticsearch javascript client, but always got an error with status code 400, illegal_argument_exception.
When I call getMapping for "documents" index I got:
{
"documents":{
"mappings": {
"properties":{
"category":{"type":"text","fields":{"keyword":
{"type":"keyword","ignore_above":256}}},
"createdAt":{"type":"text","fields":{"keyword":
{"type":"keyword","ignore_above":256}}},
"id":{"type":"text","fields":{"keyword":
{"type":"keyword","ignore_above":256}}},
"info":{"type":"text","fields":{"keyword":
{"type":"keyword","ignore_above":256}}},
"text":{"type":"text","fields":{"keyword":
{"type":"keyword","ignore_above":256}}},
"title":{"type":"text","fields":{"keyword":
{"type":"keyword","ignore_above":256}}},
"visibility":{"type":"boolean"}
}
}
}
}
I tried to call putMapping with same properties and add a new parameter 'index': 'not_analyzed' to category field:
esClient.indices.putMapping({
index: 'documents',
type: 'document',
body: {
document: {
properties: {
title: { type: 'text' },
info: { type: 'text' },
text: { type: 'text' },
category: { type: 'text', index:
'not_analyzed'
},
visibility: { type: 'boolean' },
createdAt: { type: 'text' },
},
},
},
}, (err, resp) => {
if (err) {
console.error(err);
}
else {
console.log('Successfully Created Index', resp);
}
});
I got this error:
ResponseError: illegal_argument_exception
at IncomingMessage.<anonymous> (/Users/user/reference_sys_cfu-back/node_modules/#elastic/elasticsearch/lib/Transport.js:287:25)
at IncomingMessage.emit (events.js:208:15)
at IncomingMessage.EventEmitter.emit (domain.js:476:20)
at endReadableNT (_stream_readable.js:1168:12)
at processTicksAndRejections (internal/process/task_queues.js:77:11) {
name: 'ResponseError',
meta: {
body: { error: [Object], status: 400 },
statusCode: 400,
headers: {
'content-type': 'application/json; charset=UTF-8',
'content-length': '345'
},
warnings: null,
meta: {
context: null,
request: [Object],
name: 'elasticsearch-js',
connection: [Object],
attempts: 0,
aborted: false
}
}
}

Answer 1

index: 'not_analyzed' - I do this for use "term" method for exact finding strings, but it (index: 'not_analyzed') deprecated in 2.x version of elasticsearch. Now I just use field.keyword: 'query string', to finding exact strings.