cpoerschke commented on a change in pull request #123:
URL: https://github.com/apache/solr/pull/123#discussion_r633135019
##########
File path:
solr/contrib/ltr/src/test/org/apache/solr/ltr/feature/TestFieldValueFeature.java
##########
@@ -56,11 +62,13 @@ public void before() throws Exception {
assertU(commit());
- loadFeature("popularity", FieldValueFeature.class.getName(),
- "{\"field\":\"popularity\"}");
+ for (String field : FIELD_NAMES) {
+ loadFeature(field, FieldValueFeature.class.getName(),
+ "{\"field\":\""+field+"\"}");
- loadModel("popularity-model", LinearModel.class.getName(),
- new String[] {"popularity"}, "{\"weights\":{\"popularity\":1.0}}");
+ loadModel(field + "-model", LinearModel.class.getName(),
+ new String[] {field}, "{\"weights\":{\""+field+"\":1.0}}");
+ }
Review comment:
2/2 ... I think the explanation for the mystery is here i.e. the
`LinearModel` constructor signature and the interleaving of feature and model
loading results in the models having different definitions of what
`allFeatures` means. One solution then would be for the test expectations to
account for the multiple meanings of `allFeatures` or (my preference probably)
for there to be only one `allFeatures` meaning e.g. via the separation of
feature and model loading. Or perhaps you can think of a third solution even?
```
for (String field : FIELD_NAMES) {
loadFeature(field, ...);
}
for (String field : FIELD_NAMES) {
loadModel(field + "-model", ...);
}
```
##########
File path:
solr/contrib/ltr/src/test/org/apache/solr/ltr/feature/TestFieldValueFeature.java
##########
@@ -70,86 +78,92 @@ public void after() throws Exception {
@Test
public void testRanking() throws Exception {
-
- final SolrQuery query = new SolrQuery();
- query.setQuery("title:w1");
- query.add("fl", "*, score");
- query.add("rows", "4");
-
- // Normal term match
- assertJQ("/query" + query.toQueryString(), "/response/numFound/==4");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='1'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[1]/id=='8'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[2]/id=='6'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[3]/id=='7'");
-
- query.add("rq", "{!ltr model=popularity-model reRankDocs=4}");
-
- assertJQ("/query" + query.toQueryString(), "/response/numFound/==4");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='8'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[1]/id=='7'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[2]/id=='6'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[3]/id=='1'");
-
- query.setQuery("*:*");
- query.remove("rows");
- query.add("rows", "8");
- query.remove("rq");
- query.add("rq", "{!ltr model=popularity-model reRankDocs=8}");
-
- assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='8'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[1]/id=='7'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[2]/id=='6'");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[3]/id=='5'");
+ for (String field : FIELD_NAMES) {
+
+ final SolrQuery query = new SolrQuery();
+ query.setQuery("title:w1");
+ query.add("fl", "*, score");
+ query.add("rows", "4");
+
+ // Normal term match
+ assertJQ("/query" + query.toQueryString(), "/response/numFound/==4");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='1'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[1]/id=='8'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[2]/id=='6'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[3]/id=='7'");
+
+ query.add("rq", "{!ltr model="+field+"-model reRankDocs=4}");
+
+ assertJQ("/query" + query.toQueryString(), "/response/numFound/==4");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='8'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[1]/id=='7'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[2]/id=='6'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[3]/id=='1'");
+
+ query.setQuery("*:*");
+ query.remove("rows");
+ query.add("rows", "8");
+ query.remove("rq");
+ query.add("rq", "{!ltr model="+field+"-model reRankDocs=8}");
+
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='8'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[1]/id=='7'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[2]/id=='6'");
+ assertJQ("/query" + query.toQueryString(), "/response/docs/[3]/id=='5'");
+ }
}
@Test
public void testIfADocumentDoesntHaveAFieldDefaultValueIsReturned() throws
Exception {
- SolrQuery query = new SolrQuery();
- query.setQuery("id:42");
- query.add("fl", "*, score");
- query.add("rows", "4");
-
- assertJQ("/query" + query.toQueryString(), "/response/numFound/==1");
- assertJQ("/query" + query.toQueryString(), "/response/docs/[0]/id=='42'");
- query = new SolrQuery();
- query.setQuery("id:42");
- query.add("rq", "{!ltr model=popularity-model reRankDocs=4}");
- query.add("fl", "[fv]");
- assertJQ("/query" + query.toQueryString(), "/response/numFound/==1");
- assertJQ("/query" + query.toQueryString(),
-
"/response/docs/[0]/=={'[fv]':'"+FeatureLoggerTestUtils.toFeatureVector("popularity",Float.toString(FIELD_VALUE_FEATURE_DEFAULT_VAL))+"'}");
-
+ for (String field : FIELD_NAMES) {
+ SolrQuery query = new SolrQuery();
+ query.setQuery("id:42");
+ query.add("fl", "*, score");
+ query.add("rows", "4");
+
+ assertJQ("/query" + query.toQueryString(), "/response/numFound/==1");
+ assertJQ("/query" + query.toQueryString(),
"/response/docs/[0]/id=='42'");
+ query = new SolrQuery();
+ query.setQuery("id:42");
+ query.add("rq", "{!ltr model="+field+"-model reRankDocs=4}");
+ query.add("fl", "[fv]");
+ assertJQ("/query" + query.toQueryString(), "/response/numFound/==1");
+ assertJQ("/query" + query.toQueryString(),
+
"/response/docs/[0]/=={'[fv]':'"+FeatureLoggerTestUtils.toFeatureVector(field,Float.toString(FIELD_VALUE_FEATURE_DEFAULT_VAL))+"'}");
Review comment:
1/2 Thanks for investigating in detail here! I agree the explanation is
with the `extractAllFeatures` boolean i.e. the response contains the values for
all the features in the feature store. The puzzling thing then though is why
the first run of the loop succeeds and only subsequent runs fail. Since all
loop runs use the same feature store and surely each loop run should return the
same feature values? ...
##########
File path:
solr/contrib/ltr/src/java/org/apache/solr/ltr/feature/FieldValueFeature.java
##########
@@ -106,18 +106,29 @@ public FieldValueFeatureWeight(IndexSearcher searcher,
/**
* Return a FeatureScorer that uses docValues or storedFields if no
docValues are present
+ *
* @param context the segment this FeatureScorer is working with
* @return FeatureScorer for the current segment and field
* @throws IOException as defined by abstract class Feature
*/
@Override
public FeatureScorer scorer(LeafReaderContext context) throws IOException {
if (schemaField != null && !schemaField.stored() &&
schemaField.hasDocValues()) {
- return new DocValuesFieldValueFeatureScorer(this, context,
- DocIdSetIterator.all(DocIdSetIterator.NO_MORE_DOCS),
schemaField.getType());
+
+ FieldInfo fieldInfo =
context.reader().getFieldInfos().fieldInfo(field);
+ DocValuesType docValuesType = fieldInfo != null ?
fieldInfo.getDocValuesType() : DocValuesType.NONE;
+
+ if (DocValuesType.NUMERIC.equals(docValuesType) ||
DocValuesType.SORTED.equals(docValuesType)) {
+ return new DocValuesFieldValueFeatureScorer(this, context,
+ DocIdSetIterator.all(DocIdSetIterator.NO_MORE_DOCS),
schemaField.getType(), docValuesType);
+ // If type is NONE, this segment has no docs with this field. That's
not a problem, because we won't call score() anyway
Review comment:
> ... to find a way to test this. ...
Thinking conceptually (without actually trying it) one way could be like
this ...
* imagine `TestFieldValueFeature` had a static inner class
`FooBarFieldValueFeature extends FieldValueFeature` and for some of its tests
it uses that instead of the 'real' `FieldValueFeature` class
* imagine `FooBarFieldValueFeature` can observe whatever needs to be
observed and capture the observations in class level variables
* if the class level variables are public or package scope the test has
access to them
Well, that's the theory but in practice what we wish to observe and test is
not directly in `FieldValueFeature` but inside the `FieldValueFeatureWeight`
created, but still it could be possible e.g. something like
```
class FooBarFieldValueFeature extends FieldValueFeature {
static AtomicBoolean seenFieldValueFeatureScorer = false; // could also be
counter instead of boolean
@Override
public FeatureWeight createWeight(...) throws IOException {
return new FooBarFieldValueFeatureWeight(...);
}
public class FooBarFieldValueFeatureWeight extends FieldValueFeatureWeight
{
@Override
public FeatureScorer scorer(LeafReaderContext context) throws
IOException {
FeatureScorer featureScorer = super.scorer();
if (featureScorer instanceof FieldValueFeatureScorer) {
seenFieldValueFeatureScorer = true;
}
return featureScorer;
}
}
}
```
structurally and then in the test
`assertFalse(FooBarFieldValueFeature.seenFieldValueFeatureScorer);`
Does that kind of convey the idea? Essentially the idea is to extend the
"real" class with a "test" class, for the test class to delegate to the real
class and for the test class to be "shaped" to suit the test's purposes.
##########
File path:
solr/contrib/ltr/src/test/org/apache/solr/ltr/feature/TestFieldValueFeature.java
##########
@@ -56,11 +62,13 @@ public void before() throws Exception {
assertU(commit());
- loadFeature("popularity", FieldValueFeature.class.getName(),
- "{\"field\":\"popularity\"}");
+ for (String field : FIELD_NAMES) {
+ loadFeature(field, FieldValueFeature.class.getName(),
+ "{\"field\":\""+field+"\"}");
- loadModel("popularity-model", LinearModel.class.getName(),
- new String[] {"popularity"}, "{\"weights\":{\"popularity\":1.0}}");
+ loadModel(field + "-model", LinearModel.class.getName(),
+ new String[] {field}, "{\"weights\":{\""+field+"\":1.0}}");
+ }
Review comment:
Yes, it's a somewhat quirky behaviour. Operationally it could also cause
mysteries e.g. when new features are added to an existing store and the
(reasonable) expectation is that they will start producing feature values right
away when actually that only happens when the existing model(s) are next
re-instantiated. +1 to try and reduce such confusion via documentation somehow.
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