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Add an include_type_name option to 6.x. (#29453) (#37147)
This adds an `include_type_name` option to the `indices.create`, `indices.get_mapping` and `indices.put_mapping` APIs, which defaults to `true`. When set to `false`, then mappings will be returned directly in the body of the `indices.get_mapping` API, without keying them by the type name, the `indices.create` will expect mappings directly under the `mappings` key, and the `indices.put_mapping` will use `_doc` as a type name and fail if a `type` is provided explicitly. On 5.x indices, get-mapping will fail if the index has multiple mappings, and put-mapping will update or introduce mappings for the `_doc` type instead of updating existing mappings. This oddity is required so that we don't have to introduce a new flag to put-mapping requests to know whether they are actually updating the `_doc` type or performing a typeless call. Relates #15613
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‎docs/reference/indices/create-index.asciidoc

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@@ -177,3 +177,28 @@ PUT test?wait_for_active_shards=2
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A detailed explanation of `wait_for_active_shards` and its possible values can be found
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<<index-wait-for-active-shards,here>>.
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[float]
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=== Skipping types
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Types are being removed from Elasticsearch: in 7.0, the `mappings` element will no
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longer take the type name as a top-level key by default. You can already opt in for
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this behavior by setting `include_type_name=false` and putting mappings directly under
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`mappings` in the index creation call, without specifying a type name.
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Here is an example:
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[source,js]
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--------------------------------------------------
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PUT test?include_type_name=false
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{
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"mappings": {
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"properties": {
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"foo": {
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"type": "keyword"
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}
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}
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}
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}
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--------------------------------------------------
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// CONSOLE

‎docs/reference/indices/get-mapping.asciidoc

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@@ -41,3 +41,51 @@ GET /_mapping
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--------------------------------------------------
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// CONSOLE
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// TEST[setup:twitter]
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[float]
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=== Skipping types
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Types are being removed from Elasticsearch: in 7.0, the `mappings` element will no
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longer return the type name as a top-level key by default. You can already opt in for
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this behavior by setting `include_type_name=false` on the request.
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NOTE: Such calls will be rejected on indices that have multiple types as it
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introduces ambiguity as to which mapping should be returned. Only indices
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created by Elasticsearch 5.x may have multiple types.
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Here is an example:
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[source,js]
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--------------------------------------------------
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PUT test?include_type_name=false
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{
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"mappings": {
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"properties": {
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"foo": {
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"type": "keyword"
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}
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}
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}
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}
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GET test/_mappings?include_type_name=false
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--------------------------------------------------
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// CONSOLE
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which returns
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[source,js]
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--------------------------------------------------
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{
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"test": {
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"mappings": {
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"properties": {
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"foo": {
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"type": "keyword"
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}
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}
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}
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}
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}
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--------------------------------------------------
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// TESTRESPONSE

‎docs/reference/indices/put-mapping.asciidoc

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@@ -114,3 +114,39 @@ PUT my_index/_mapping/_doc
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Each <<mapping-params,mapping parameter>> specifies whether or not its setting
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can be updated on an existing field.
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[float]
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=== Skipping types
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Types are being removed from Elasticsearch: in 7.0, the `mappings` element will no
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longer take the type name as a top-level key by default. You can already opt in for
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this behavior by setting `include_type_name=false` and putting mappings directly under
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`mappings` in the index creation call, without specifying a type name.
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NOTE: On indices created on Elasticsearch 5.x, such calls will actually
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introduce or update mappings for the `_doc` type. It is recommended to avoid
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calling the put-mapping API with `include_type_name=false` on 5.x indices.
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Here is an example:
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[source,js]
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-----------------------------------
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PUT my_index?include_type_name=false
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{
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"mappings": {
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"properties": {
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"name": {
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"properties": {
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"first": {
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"type": "text"
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}
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}
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},
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"user_id": {
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"type": "keyword"
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}
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}
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}
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}
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-----------------------------------
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// CONSOLE

‎qa/full-cluster-restart/src/test/java/org/elasticsearch/upgrades/FullClusterRestartIT.java

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import org.elasticsearch.test.NotEqualMessageBuilder;
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import org.elasticsearch.test.rest.ESRestTestCase;
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import org.elasticsearch.test.rest.yaml.ObjectPath;
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import org.hamcrest.Matchers;
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import org.junit.Before;
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import java.io.IOException;
@@ -1003,6 +1004,115 @@ public void testSoftDeletes() throws Exception {
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}
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}
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public void testIncludeTypeNameOnMultiTypesIndices() throws IOException {
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assumeTrue("This test only makes sense if the old cluster runs a version that supports types",
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getOldClusterVersion().before(Version.V_6_0_0));
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if (isRunningAgainstOldCluster()) {
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String mapping = Strings.toString(JsonXContent.contentBuilder()
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.startObject()
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.startObject("mappings")
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.startObject("type1")
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.startObject("properties")
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.startObject("foo")
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.field("type", "keyword")
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.endObject()
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.endObject()
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.endObject()
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.startObject("type2")
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.startObject("properties")
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.startObject("foo")
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.field("type", "keyword")
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.endObject()
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.endObject()
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.endObject()
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.endObject()
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.endObject());
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Request createIndexRequest = new Request("PUT", "/" + index);
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createIndexRequest.setJsonEntity(mapping);
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client().performRequest(createIndexRequest);
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} else {
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// GET mappings
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Request getMappingsRequest = new Request("GET", index + "/_mappings");
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getMappingsRequest.addParameter("include_type_name", "false");
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ResponseException ex = expectThrows(ResponseException.class, () -> client().performRequest(getMappingsRequest));
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assertThat(EntityUtils.toString(ex.getResponse().getEntity()), Matchers.containsString("has multiple mappings"));
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// PUT mappings
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Request putMappingsRequest = new Request("PUT", index + "/_mappings");
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putMappingsRequest.addParameter("include_type_name", "false");
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String mapping = Strings.toString(JsonXContent.contentBuilder()
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.startObject()
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.startObject("properties")
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.startObject("bar")
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.field("type", "long")
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.endObject()
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.endObject()
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.endObject());
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putMappingsRequest.setJsonEntity(mapping);
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client().performRequest(putMappingsRequest);
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Request getMappingsRequest2 = new Request("GET", index + "/_mappings");
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Response getMappingsResponse = client().performRequest(getMappingsRequest2);
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String getMappingsResponseAsString = EntityUtils.toString(getMappingsResponse.getEntity());
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// we introduced a _doc mapping
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assertThat(getMappingsResponseAsString, Matchers.containsString("\"_doc\":{"));
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}
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}
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public void testIncludeTypeNameOnSingleTypeIndices() throws IOException {
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if (isRunningAgainstOldCluster()) {
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String mapping = Strings.toString(JsonXContent.contentBuilder()
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.startObject()
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.startObject("mappings")
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.startObject("my_type")
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.startObject("properties")
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.startObject("foo")
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.field("type", "keyword")
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.endObject()
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.endObject()
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.endObject()
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.endObject()
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.endObject());
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Request request = new Request("PUT", "/" + index);
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request.setJsonEntity(mapping);
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client().performRequest(request);
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} else {
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// PUT mappings
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Request putMappingsRequest = new Request("PUT", index + "/_mappings");
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putMappingsRequest.addParameter("include_type_name", "false");
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String mapping = Strings.toString(JsonXContent.contentBuilder()
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.startObject()
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.startObject("properties")
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.startObject("bar")
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.field("type", "long")
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.endObject()
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.endObject()
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.endObject());
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putMappingsRequest.setJsonEntity(mapping);
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client().performRequest(putMappingsRequest);
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// GET mappings
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Request getMappingsRequest = new Request("GET", index + "/_mappings");
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getMappingsRequest.addParameter("include_type_name", "false");
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if (getOldClusterVersion().before(Version.V_6_0_0)) {
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ResponseException ex = expectThrows(ResponseException.class, () -> client().performRequest(getMappingsRequest));
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assertThat(EntityUtils.toString(ex.getResponse().getEntity()), Matchers.containsString("has multiple mappings"));
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Request getMappingsRequest2 = new Request("GET", index + "/_mappings");
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Response getMappingsResponse = client().performRequest(getMappingsRequest2);
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String getMappingsResponseAsString = EntityUtils.toString(getMappingsResponse.getEntity());
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// we introduced a _doc mapping
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assertThat(getMappingsResponseAsString, Matchers.containsString("\"_doc\":{"));
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assertThat(getMappingsResponseAsString, Matchers.containsString("\"my_type\":{"));
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} else {
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Response getMappingsResponse = client().performRequest(getMappingsRequest);
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String getMappingsResponseAsString = EntityUtils.toString(getMappingsResponse.getEntity());
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assertThat(getMappingsResponseAsString, Matchers.not(Matchers.containsString("my_type"))); // no type name
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assertThat(getMappingsResponseAsString, Matchers.containsString("\"bar\":{\"type\":\"long\"}")); // new field is here
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assertThat(getMappingsResponseAsString, Matchers.containsString("\"foo\":{\"type\":\"keyword\"}")); // old field is here too
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}
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}
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}
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private void checkSnapshot(String snapshotName, int count, Version tookOnVersion) throws IOException {
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// Check the snapshot metadata, especially the version
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Request listSnapshotRequest = new Request("GET", "/_snapshot/repo/" + snapshotName);

‎rest-api-spec/src/main/resources/rest-api-spec/api/indices.create.json

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}
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},
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"params": {
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"include_type_name": {
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"type" : "boolean",
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"description" : "Whether a type should be expected in the body of the mappings."
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},
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"wait_for_active_shards": {
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"type" : "string",
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"description" : "Set the number of active shards to wait for before the operation returns."

‎rest-api-spec/src/main/resources/rest-api-spec/api/indices.get_mapping.json

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}
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},
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"params": {
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"include_type_name": {
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"type" : "boolean",
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"description" : "Whether to add the type name to the response."
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},
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"ignore_unavailable": {
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"type" : "boolean",
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"description" : "Whether specified concrete indices should be ignored when unavailable (missing or closed)"

‎rest-api-spec/src/main/resources/rest-api-spec/api/indices.put_mapping.json

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"methods": ["PUT", "POST"],
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"url": {
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"path": "/{index}/{type}/_mapping",
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"paths": ["/{index}/{type}/_mapping", "/{index}/_mapping/{type}", "/_mapping/{type}", "/{index}/{type}/_mappings", "/{index}/_mappings/{type}", "/_mappings/{type}"],
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"paths": ["/{index}/{type}/_mapping", "/{index}/_mapping/{type}", "/_mapping/{type}", "/{index}/{type}/_mappings", "/{index}/_mappings/{type}", "/_mappings/{type}", "{index}/_mappings", "{index}/_mapping"],
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"parts": {
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"index": {
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"type" : "list",
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"description" : "A comma-separated list of index names the mapping should be added to (supports wildcards); use `_all` or omit to add the mapping on all indices."
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},
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"type": {
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"type" : "string",
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"required" : true,
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"description" : "The name of the document type"
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}
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},
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"params": {
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"include_type_name": {
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"type" : "boolean",
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"description" : "Whether a type should be expected in the body of the mappings."
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},
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"timeout": {
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"type" : "time",
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"description" : "Explicit operation timeout"

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