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Briefly, this error occurs when the latitude value provided in a geospatial query in OpenSearch exceeds the valid range of -90 to 90 degrees. This could be due to a typo or incorrect data input. To resolve this issue, you should first verify the latitude values in your data. If the values are incorrect, correct them. If the values are correct but still causing the error, check your query syntax to ensure you’re not inadvertently altering the values. Lastly, ensure your OpenSearch version supports the geospatial features you’re using.
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This guide will help you check for common problems that cause the log ” illegal latitude value [{}] for [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, query.
Quick links
Overview
In OpenSearch, an index (plural: indices) contains a schema and can have one or more shards and replicas. An OpenSearch index is divided into shards and each shard is an instance of a Lucene index.
Indices are used to store the documents in dedicated data structures corresponding to the data type of fields. For example, text fields are stored inside an inverted index whereas numeric and geo fields are stored inside BKD trees.
Examples
Create index
The following example is based on OpenSearch version 5.x onwards. An index with two shards, each having one replica will be created with the name test_index1
PUT /test_index1?pretty
{
"settings" : {
"number_of_shards" : 2,
"number_of_replicas" : 1
},
"mappings" : {
"properties" : {
"tags" : { "type" : "keyword" },
"updated_at" : { "type" : "date" }
}
}
}List indices
All the index names and their basic information can be retrieved using the following command:
GET _cat/indices?v
Index a document
Let’s add a document in the index with the command below:
PUT test_index1/_doc/1
{
"tags": [
"opster",
"OpenSearch"
],
"date": "01-01-2020"
}Query an index
GET test_index1/_search
{
"query": {
"match_all": {}
}
}Query multiple indices
It is possible to search multiple indices with a single request. If it is a raw HTTP request, index names should be sent in comma-separated format, as shown in the example below, and in the case of a query via a programming language client such as python or Java, index names are to be sent in a list format.
GET test_index1,test_index2/_search
Delete indices
DELETE test_index1
Common problems
- It is good practice to define the settings and mapping of an Index wherever possible because if this is not done, OpenSearch tries to automatically guess the data type of fields at the time of indexing. This automatic process may have disadvantages, such as mapping conflicts, duplicate data and incorrect data types being set in the index. If the fields are not known in advance, it’s better to use dynamic index templates.
- OpenSearch supports wildcard patterns in Index names, which sometimes aids with querying multiple indices, but can also be very destructive too. For example, It is possible to delete all the indices in a single command using the following commands:
DELETE /*
To disable this, you can add the following lines in the OpenSearch.yml:
action.destructive_requires_name: true
Log Context
Log “illegal latitude value [{}] for [{}]” class name is GeoPolygonQueryBuilder.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :
// validation was not available prior to 2.x; so to support bwc
// percolation queries we only ignore_malformed on 2.x created indexes
if (!GeoValidationMethod.isIgnoreMalformed(validationMethod)) {
for (GeoPoint point : shell) {
if (!GeoUtils.isValidLatitude(point.lat())) {
throw new QueryShardException(context; "illegal latitude value [{}] for [{}]"; point.lat();
GeoPolygonQueryBuilder.NAME);
}
if (!GeoUtils.isValidLongitude(point.lon())) {
throw new QueryShardException(context; "illegal longitude value [{}] for [{}]"; point.lon();
GeoPolygonQueryBuilder.NAME);
