I am trying to run the below code in Python using Elasticsearch Ver 7.1, however the following errors come up:
ElasticsearchDeprecationWarning: [types removal] Using include_type_name in put mapping requests is deprecated. The parameter will be removed in the next major version.
client.indices.put_mapping(index=indexName,doc_type='diseases', body=diseaseMapping, include_type_name=True)
followed by:
ElasticsearchDeprecationWarning: [types removal] Specifying types in document index requests is deprecated, use the typeless endpoints instead (/{index}/_doc/{id}, /{index}/_doc, or /{index}/_create/{id}).
client.index(index=indexName,doc_type=docType, body={"name": disease,"title":currentPage.title,"fulltext":currentPage.content})
How I am supposed to amend my code to make it (see here) work in line with Elasticsearch 7X version? Any kind of help would be much appreciated.
This is just a warning right now, but it will become an error in Elasticsearch 8.
From last few version, Elasticsearch has been planning the removal of index types inside an index
ES5 - Setting index.mapping.single_type: true on an index will enable the single-type-per-index behavior which will be enforced in 6.0.
In ES6 - you can't have more than 1 index type inside 1 index
In ES7 - the concept of types inside an index has been deprecated
In ES8 - it will be removed, and you can't use types for query or while inserting documents
My suggestion would be to design an application and mapping in such a way that it doesn't include type parameter in index
To know the reason why elastic search has done this here is a link: https://www.elastic.co/guide/en/elasticsearch/reference/current/removal-of-types.html#_why_are_mapping_types_being_removed
A common issue (and difficult to spot) for this error message could be misspelling the endpoint, e.g.:
Misspelled:
/search
Correct:
/_search
Double check if your endpoint is correct as ElasticSearch may think you are trying to manipulate (add, update, remove) a document and you are giving a type, which is not the case (you are trying to call an endpoint).
Related
I come across the following phrase and I am under impression that a valid 6.x query with type might give an error. I am using the cluster ES 7.10
Note that in 7.0, _doc is a permanent part of the path, and represents
the endpoint name rather than the document type.
But, to my surprise, I am able to run the following query. Does it mean _doc is NOT permanent part of the path? In specific, what kind of queries I need to modify when I am moving from 6.x to 7.x
PUT ecommercesite/product/1
{
"product_name": "Men High Performance Fleece Jacket",
"description": "Best Value. All season fleece jacket",
"unit_price": 79.99,
"reviews": 250,
"release_date": "2016-08-16"
}
And only the 6.x query, I am not able to run on 7.10. I got an error with respect to type.
GET ecommercesite/product/_mapping
The PUT requests currently (end of 2020) just throws a warning but will fail in 8.x.
For now, you could start replacing product with _doc:
PUT ecommercesite/product/1 --> PUT ecommercesite/_doc/1
GET ecommercesite/product/_mapping --> GET ecommercesite/_doc/_mapping?include_type_name
but it'd be best to ditch the types completely and adhere to the standards:
important: instead of PUT ecommercesite/1 either keep using PUT ecommercesite/_doc/1 or use PUT /ecommercesite/_create/1 (docs here)
GET ecommercesite/_mapping (docs here)
no significant changes in GET ecommercesite/_search
I've created a routine that updates ES clients from 5.x to 6.x and finally 7.x
Somehow some clients cannot be updated.
Loading existing data in 6.8 fails.
Appearently some mappings are causing this.
But there are not templates applied and I cannot see any difference to the other clients, were everything works just fine.
I know that ES has dropped string type and is using text now but where does this type string come from? Why doesn't it occur on the other clients then? And finally - how would I solve this? I cannot change type from string to text in 5.x and I cannot apply templates in 6.x because it's not starting up.
Caused by: org.elasticsearch.index.mapper.MapperParsingException: Failed to parse mapping [datapoint]: No handler for type [string] declared on field [batchId]
UPDATE:
this is my current mapping for batchId
http://localhost:9200/_mapping
"batchId":{"type":"keyword"}
it seems that you forgot to change the datatype from string to text in your mapping which caused MapperParsingException and its really good that exception is telling you that probalmatic field is batchId, just change it to text datatype and it should work.
Please refer this elastic blog that talks about this string to text change and provides some tips on how to handle it while upgrading.
The problem was something else:
Some clients had unexpected indices which caused the problem.
After deleting them, ES 6.x started fine.
Can somebody please guide me that following questions while upgrading es2 to es7
Is it possible to directly upgrade to es2 to es7 ?
do we need to do mapping ?
how to handle _parent fields that are already exist in es2.
1. Is it possible to directly upgrade to es2 to es7 ?
No, it's not possible, ES provides the backward compatibility only till last major version, as mentioned in ES upgrade docs and there are a lot of breaking changes, from es2 to es7.
2. do we need to do mapping ?
It's not clear what exactly you mean, but yes, as mentioned there are lot of breaking changes in mapping as well, like removal of types, string data-type is changed to text to name a few, so it's better you define your new mapping according to latest syntax.
3.how to handle _parent fields that are already exist in es2.?
Not much familiar with this but you can read the docs and migration guide on it.
I have recently upgraded application from Elastic search 5.3.1 to 6.0.
My requirement was to get all the indices which were associated with specific alias.
I used below mentioned snippet to fetch all indices associated with specific alias . This snippet is working fine in 5.3.1 and giving only those indices which are associated with that specific alias.
GetAliasesResponse r = client.admin().indices().getAliases(new
GetAliasesRequest("givenalias")).actionGet();
But after ES 6.0 , the same snippet giving all the indices which are created in system .
Ideally it should only return those indices which are associated with given alias .Not others. This was working in Elastic search 5.3.1.
TL;DR: It is an intended breaking change in the Java API of Elasticsearch (though it is not explicitly mentioned in the "Breaking changes in 6.0 ยป Java API changes" page).
The following is the story of discovering this fact. (Note: the original answer was heavily edited, hence comments might be out of date.)
Breaking changes in the REST API in 6.0
First I noticed that this part of the REST API changed in Elasticsearch 6.0. There are two reported breaking changes concerning aliases:
GET /_aliases,_mappings syntax was removed in favor of GET /_aliases/GET /_mappings
Indices aliases api resolves indices expressions only against indices
Though there isn't mentioned anything concerning OP's case.
From what I have seen doing queries, this query works in Elasticsearch 5:
GET /alias1/_aliases
And does not work in Elasticsearch 6, giving the following error:
{
"error": "Incorrect HTTP method for uri [/alias1/_aliases] and method [GET], allowed: [PUT]",
"status": 405
}
Interestingly, GET /alias1/_alias works in both versions and returns same result.
Moreover, I didn't manage to find an example of GET /alias1/_aliases in the documentation of nor 5.6, neither 6.0.
Reproducing the bug
After having realised that OP is actually using the Java API, I managed to reproduce the exact same behavior.
The following code:
GetAliasesResponse alias1 = client.admin().indices()
.getAliases(new GetAliasesRequest("alias1")).actionGet();
In ES 5 produces this in the IntelliJ debugger:
And for ES 6 I've got the following:
As you can see, there are extra keys in the second output, which have empty values.
Diving into the source code
Quick search over the elasticsearch codebase gave me the final explanation. In ES 5 there was a test testIndicesGetAliases which was checking that list of indices returned for a test alias has exactly one element (IndexAliasesIT.java#L554):
logger.info("--> getting alias1");
GetAliasesResponse getResponse = admin().indices().prepareGetAliases("alias1").get();
assertThat(getResponse, notNullValue());
assertThat(getResponse.getAliases().size(), equalTo(1));
And in 6.0 it checks that the size is 5! (IndexAliasesIT.java#L573)
logger.info("--> getting alias1");
GetAliasesResponse getResponse = admin().indices().prepareGetAliases("alias1").get();
assertThat(getResponse, notNullValue());
assertThat(getResponse.getAliases().size(), equalTo(5));
This change was introduced in this commit, which is related to these issues:
Remove comma-separated feature parsing for GetIndicesAction #24723
_alias API no longer accepts index wildcards #25090
This is actually interesting, because one of the reported REST API breaking changes that we have see above also broke compatibility of some Java API calls.
What you can do
In short term, you need just to filter out those keys with empty values.
In longer term I think it makes sense to migrate to Java High Level REST Client since Elastic plan to deprecate the TransportClient in version 7.0:
We plan on deprecating the TransportClient in Elasticsearch 7.0 and
removing it completely in 8.0. Instead, you should be using the Java
High Level REST Client, which executes HTTP requests rather than
serialized Java requests.
In general, Elasticsearch breaks compatibility quite often, so it's better to stay away from the dark corners of it like Java API.
Thanks for reading.
Hope that helps!
Implementing a sort in my query, how can I set IgnoreUnmapped(true) when using NEST API?
The default value is false, which means if the field doesn't exist it won't return any results, using NEST how to change the default value?
And is there any option when sorting with NEST to be able to sort with raw query? like FilterRaw()? SortRaw()?
This was blatantly missing in the API I just pushed support and tests for this:
https://github.com/Mpdreamz/NEST/commit/e92378589e0afaa9f6559507deb02c858d2c554d
This should make it into the next release (for future googlers next release meaning a release after 0.11.1.0).