EsqlActionBreakerIT fails in a number of different ways. This issue intends to be a place to capture such failures, so that they can be analysed and worked on separately. 
x-pack/plugin/esql/compute/src/main/java/org/elasticsearch/compute/operator/OrdinalsGroupingOperator.java
private final ValuesSourceReaderOperator extractor;
        private final HashAggregationOperator aggregator;
        ValuesAggregator(
            List<ValueSourceInfo> sources,
            int docChannel,
            String groupingField,
            int channelIndex,
            List<GroupingAggregator.Factory> aggregatorFactories,
            int maxPageSize,
            DriverContext driverContext
        ) {
            this.extractor = new ValuesSourceReaderOperator(sources, docChannel, groupingField);
            this.aggregator = new HashAggregationOperator(
                aggregatorFactories,
                () -> BlockHash.build(
                    List.of(new GroupSpec(channelIndex, sources.get(0).elementType())),
                    driverContext,
                    maxPageSize,
                    false
                ),
                driverContext
            );
        }
        void addInput(Page page) {
            extractor.addInput(page);