Stefan Vodita

Occasional OOMEs when running the test suite

1

### Description I've seen `OutOfMemoryError`s a few times recently when doing `./gradlew test` or `./gradlew check`. I don't think this is related to my changes, because it's intermittent and I've...

Use Kahan summation for float aggregations to reduce errors

3

### Description With facet associations, we have the option of summing floats into an accumulator. This type of operation is prone to errors, which can be prevented by using summation...

Instrument IndexOrDocValuesQuery to report on its decisions

3

### Description For Amazon Product Search, we use `IndexOrDocValuesQuery` and have changed it to take a listener type object that records and reports on the decision the query has made....

Make dynamic range facets value collection and sorting faster

10

### Description `DynamicRangeUtil` [collects](https://github.com/apache/lucene/blob/02b37670e481679363e8ae5c245e5ed3cb0f10b6/lucene/facet/src/java/org/apache/lucene/facet/range/DynamicRangeUtil.java#L145) values from each segment and then [sorts](https://github.com/apache/lucene/blob/02b37670e481679363e8ae5c245e5ed3cb0f10b6/lucene/facet/src/java/org/apache/lucene/facet/range/DynamicRangeUtil.java#L213) all the values in the main thread. I wonder if we could get a speed-up from collecting values in...

Add changelog verifier

2

### Description This runs along the checks we already have for PR creation/update and warns us if there is no CHANGES.txt entry. Closes #13898

Create a bot to check if there is a CHANGES entry for new PRs

3

### Description We always have to remind ourselves and others to add a CHANGES entry. We can probably write a GitHub action to check for changes to that file on...

Create a community metrics dashboard

5

### Description Beam has a rich community metrics [dashboard](http://35.193.202.176/d/code_velocity/code-velocity?orgId=1) ([discussion](https://lists.apache.org/thread/0mqo7jfz0ooc1bzvggvw6h0gdlmbd1kl)). Would it help to have something similar?

### Description It would be useful to filter by "module:facet", "module:spatial", etc. These labels already exist, but I haven't seen them used. We could probably write a bot to add...