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fallback to float if source type is scaled_float for mapping deduction (#51990) 

fallback to float if source type is scaled_float for mapping deduction of min/max aggregation

fixes #51780
This commit is contained in:
Hendrik Muhs 2020-02-06 17:26:43 +01:00
parent 884d4904d4
commit 03fb5cdaae
2 changed files with 26 additions and 8 deletions
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32
x-pack/plugin/transform/src/main/java/org/elasticsearch/xpack/transform/transforms/pivot/Aggregations.java
View File

@ -25,6 +25,13 @@ public final class Aggregations {
// the field mapping should be determined explicitly from the source field mapping if possible.
private static final String SOURCE = "_source";
public static final String FLOAT = "float";
public static final String SCALED_FLOAT = "scaled_float";
public static final String DOUBLE = "double";
public static final String LONG = "long";
public static final String GEO_SHAPE = "geo_shape";
public static final String GEO_POINT = "geo_point";
private Aggregations() {}
/**
@ -37,19 +44,19 @@ public final class Aggregations {
*
*/
enum AggregationType {
AVG("avg", "double"),
CARDINALITY("cardinality", "long"),
VALUE_COUNT("value_count", "long"),
AVG("avg", DOUBLE),
CARDINALITY("cardinality", LONG),
VALUE_COUNT("value_count", LONG),
MAX("max", SOURCE),
MIN("min", SOURCE),
SUM("sum", "double"),
GEO_CENTROID("geo_centroid", "geo_point"),
GEO_BOUNDS("geo_bounds", "geo_shape"),
SUM("sum", DOUBLE),
GEO_CENTROID("geo_centroid", GEO_POINT),
GEO_BOUNDS("geo_bounds", GEO_SHAPE),
SCRIPTED_METRIC("scripted_metric", DYNAMIC),
WEIGHTED_AVG("weighted_avg", DYNAMIC),
BUCKET_SELECTOR("bucket_selector", DYNAMIC),
BUCKET_SCRIPT("bucket_script", DYNAMIC),
PERCENTILES("percentiles", "double");
PERCENTILES("percentiles", DOUBLE);
private final String aggregationType;
private final String targetMapping;
@ -82,7 +89,16 @@ public final class Aggregations {
public static String resolveTargetMapping(String aggregationType, String sourceType) {
AggregationType agg = AggregationType.valueOf(aggregationType.toUpperCase(Locale.ROOT));
return agg.getTargetMapping().equals(SOURCE) ? sourceType : agg.getTargetMapping();
if (agg.getTargetMapping().equals(SOURCE)) {
// scaled float requires an additional parameter "scaling_factor", which we do not know, therefore we fallback to float
if (sourceType.equals(SCALED_FLOAT)) {
return FLOAT;
}
return sourceType;
}
return agg.getTargetMapping();
}
public static Map<String, String> getAggregationOutputTypes(AggregationBuilder agg) {

2
x-pack/plugin/transform/src/test/java/org/elasticsearch/xpack/transform/transforms/pivot/AggregationsTests.java
View File

@ -27,11 +27,13 @@ public class AggregationsTests extends ESTestCase {
assertEquals("int", Aggregations.resolveTargetMapping("max", "int"));
assertEquals("double", Aggregations.resolveTargetMapping("max", "double"));
assertEquals("half_float", Aggregations.resolveTargetMapping("max", "half_float"));
assertEquals("float", Aggregations.resolveTargetMapping("max", "scaled_float"));
// min
assertEquals("int", Aggregations.resolveTargetMapping("min", "int"));
assertEquals("double", Aggregations.resolveTargetMapping("min", "double"));
assertEquals("half_float", Aggregations.resolveTargetMapping("min", "half_float"));
assertEquals("float", Aggregations.resolveTargetMapping("min", "scaled_float"));
// sum
assertEquals("double", Aggregations.resolveTargetMapping("sum", "double"));