make Term::as_slice public

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tantivy"
-version = "0.19.1-quickwit"
+version = "0.19.0"
 authors = ["Paul Masurel <paul.masurel@gmail.com>"]
 license = "MIT"
 categories = ["database-implementations", "data-structures"]
@@ -23,7 +23,7 @@ regex = { version = "1.5.5", default-features = false, features = ["std", "unico
 aho-corasick = "0.7"
 tantivy-fst = "0.4.0"
 memmap2 = { version = "0.5.3", optional = true }
-lz4_flex = { version = "0.10", default-features = false, features = ["checked-decode"], optional = true }
+lz4_flex = { version = "0.9.2", default-features = false, features = ["checked-decode"], optional = true }
 brotli = { version = "3.3.4", optional = true }
 zstd = { version = "0.12", optional = true, default-features = false }
 snap = { version = "1.0.5", optional = true }
@@ -55,7 +55,7 @@ measure_time = "0.8.2"
 async-trait = "0.1.53"
 arc-swap = "1.5.0"
 
-#columnar = { version="0.1", path="./columnar", package ="tantivy-columnar" }
+columnar = { version="0.1", path="./columnar", package ="tantivy-columnar" }
 sstable = { version="0.1", path="./sstable", package ="tantivy-sstable", optional = true }
 stacker = { version="0.1", path="./stacker", package ="tantivy-stacker" }
 tantivy-query-grammar = { version= "0.19.0", path="./query-grammar" }

src/aggregation/bucket/term_agg.rs

@@ -362,19 +362,13 @@ impl SegmentTermCollector {
         let mut entries: Vec<(u32, TermBucketEntry)> =
             self.term_buckets.entries.into_iter().collect();
 
+        let order_by_key = self.req.order.target == OrderTarget::Key;
         let order_by_sub_aggregation =
             matches!(self.req.order.target, OrderTarget::SubAggregation(_));
 
         match self.req.order.target {
             OrderTarget::Key => {
-                // We rely on the fact, that term ordinals match the order of the strings
-                // TODO: We could have a special collector, that keeps only TOP n results at any
-                // time.
-                if self.req.order.order == Order::Desc {
-                    entries.sort_unstable_by_key(|bucket| std::cmp::Reverse(bucket.0));
-                } else {
-                    entries.sort_unstable_by_key(|bucket| bucket.0);
-                }
+                // defer order and cut_off after loading the texts from the dictionary
             }
             OrderTarget::SubAggregation(_name) => {
                 // don't sort and cut off since it's hard to make assumptions on the quality of the
@@ -390,11 +384,12 @@ impl SegmentTermCollector {
             }
         }
 
-        let (term_doc_count_before_cutoff, sum_other_doc_count) = if order_by_sub_aggregation {
-            (0, 0)
-        } else {
-            cut_off_buckets(&mut entries, self.req.segment_size as usize)
-        };
+        let (term_doc_count_before_cutoff, mut sum_other_doc_count) =
+            if order_by_key || order_by_sub_aggregation {
+                (0, 0)
+            } else {
+                cut_off_buckets(&mut entries, self.req.segment_size as usize)
+            };
 
         let inverted_index = agg_with_accessor
             .inverted_index
@@ -417,10 +412,6 @@ impl SegmentTermCollector {
         if self.req.min_doc_count == 0 {
             let mut stream = term_dict.stream()?;
             while let Some((key, _ord)) = stream.next() {
-                if dict.len() >= self.req.segment_size as usize {
-                    break;
-                }
-
                 let key = std::str::from_utf8(key)
                     .map_err(|utf8_err| DataCorruption::comment_only(utf8_err.to_string()))?;
                 if !dict.contains_key(key) {
@@ -429,6 +420,20 @@ impl SegmentTermCollector {
             }
         }
 
+        if order_by_key {
+            let mut dict_entries = dict.into_iter().collect_vec();
+            if self.req.order.order == Order::Desc {
+                dict_entries.sort_unstable_by(|(key1, _), (key2, _)| key1.cmp(key2));
+            } else {
+                dict_entries.sort_unstable_by(|(key1, _), (key2, _)| key2.cmp(key1));
+            }
+            let (_, sum_other_docs) =
+                cut_off_buckets(&mut dict_entries, self.req.segment_size as usize);
+
+            sum_other_doc_count += sum_other_docs;
+            dict = dict_entries.into_iter().collect();
+        }
+
         Ok(IntermediateBucketResult::Terms(
             IntermediateTermBucketResult {
                 entries: dict,
@@ -918,14 +923,14 @@ mod tests {
         ];
         let index = get_test_index_from_values_and_terms(merge_segments, &segment_and_terms)?;
 
-        // key asc
+        // key desc
         let agg_req: Aggregations = vec![(
             "my_texts".to_string(),
             Aggregation::Bucket(BucketAggregation {
                 bucket_agg: BucketAggregationType::Terms(TermsAggregation {
                     field: "string_id".to_string(),
                     order: Some(CustomOrder {
-                        order: Order::Asc,
+                        order: Order::Desc,
                         target: OrderTarget::Key,
                     }),
                     ..Default::default()
@@ -952,7 +957,7 @@ mod tests {
                 bucket_agg: BucketAggregationType::Terms(TermsAggregation {
                     field: "string_id".to_string(),
                     order: Some(CustomOrder {
-                        order: Order::Asc,
+                        order: Order::Desc,
                         target: OrderTarget::Key,
                     }),
                     size: Some(2),
@@ -976,14 +981,14 @@ mod tests {
 
         assert_eq!(res["my_texts"]["sum_other_doc_count"], 3);
 
-        // key asc and segment_size cut_off
+        // key desc and segment_size cut_off
         let agg_req: Aggregations = vec![(
             "my_texts".to_string(),
             Aggregation::Bucket(BucketAggregation {
                 bucket_agg: BucketAggregationType::Terms(TermsAggregation {
                     field: "string_id".to_string(),
                     order: Some(CustomOrder {
-                        order: Order::Asc,
+                        order: Order::Desc,
                         target: OrderTarget::Key,
                     }),
                     size: Some(2),
@@ -1006,14 +1011,14 @@ mod tests {
             serde_json::Value::Null
         );
 
-        // key desc
+        // key asc
         let agg_req: Aggregations = vec![(
             "my_texts".to_string(),
             Aggregation::Bucket(BucketAggregation {
                 bucket_agg: BucketAggregationType::Terms(TermsAggregation {
                     field: "string_id".to_string(),
                     order: Some(CustomOrder {
-                        order: Order::Desc,
+                        order: Order::Asc,
                         target: OrderTarget::Key,
                     }),
                     ..Default::default()
@@ -1033,14 +1038,14 @@ mod tests {
         assert_eq!(res["my_texts"]["buckets"][2]["doc_count"], 5);
         assert_eq!(res["my_texts"]["sum_other_doc_count"], 0);
 
-        // key desc, size cut_off
+        // key asc, size cut_off
         let agg_req: Aggregations = vec![(
             "my_texts".to_string(),
             Aggregation::Bucket(BucketAggregation {
                 bucket_agg: BucketAggregationType::Terms(TermsAggregation {
                     field: "string_id".to_string(),
                     order: Some(CustomOrder {
-                        order: Order::Desc,
+                        order: Order::Asc,
                         target: OrderTarget::Key,
                     }),
                     size: Some(2),
@@ -1063,14 +1068,14 @@ mod tests {
         );
         assert_eq!(res["my_texts"]["sum_other_doc_count"], 5);
 
-        // key desc, segment_size cut_off
+        // key asc, segment_size cut_off
         let agg_req: Aggregations = vec![(
             "my_texts".to_string(),
             Aggregation::Bucket(BucketAggregation {
                 bucket_agg: BucketAggregationType::Terms(TermsAggregation {
                     field: "string_id".to_string(),
                     order: Some(CustomOrder {
-                        order: Order::Desc,
+                        order: Order::Asc,
                         target: OrderTarget::Key,
                     }),
                     size: Some(2),
@@ -1347,3 +1352,68 @@ mod tests {
         Ok(())
     }
 }
+
+#[cfg(all(test, feature = "unstable"))]
+mod bench {
+
+    use itertools::Itertools;
+    use rand::seq::SliceRandom;
+    use rand::thread_rng;
+
+    use super::*;
+
+    fn get_collector_with_buckets(num_docs: u64) -> TermBuckets {
+        TermBuckets::from_req_and_validate(&Default::default(), num_docs as usize).unwrap()
+    }
+
+    fn get_rand_terms(total_terms: u64, num_terms_returned: u64) -> Vec<u64> {
+        let mut rng = thread_rng();
+
+        let all_terms = (0..total_terms - 1).collect_vec();
+
+        let mut vals = vec![];
+        for _ in 0..num_terms_returned {
+            let val = all_terms.as_slice().choose(&mut rng).unwrap();
+            vals.push(*val);
+        }
+
+        vals
+    }
+
+    fn bench_term_buckets(b: &mut test::Bencher, num_terms: u64, total_terms: u64) {
+        let mut collector = get_collector_with_buckets(total_terms);
+        let vals = get_rand_terms(total_terms, num_terms);
+        let aggregations_with_accessor: AggregationsWithAccessor = Default::default();
+        let bucket_count: BucketCount = BucketCount {
+            bucket_count: Default::default(),
+            max_bucket_count: 1_000_001u32,
+        };
+        b.iter(|| {
+            for &val in &vals {
+                collector
+                    .increment_bucket(&[val], 0, &aggregations_with_accessor, &bucket_count, &None)
+                    .unwrap();
+            }
+        })
+    }
+
+    #[bench]
+    fn bench_term_buckets_500_of_1_000_000(b: &mut test::Bencher) {
+        bench_term_buckets(b, 500u64, 1_000_000u64)
+    }
+
+    #[bench]
+    fn bench_term_buckets_1_000_000_of_50_000(b: &mut test::Bencher) {
+        bench_term_buckets(b, 1_000_000u64, 50_000u64)
+    }
+
+    #[bench]
+    fn bench_term_buckets_1_000_000_of_50(b: &mut test::Bencher) {
+        bench_term_buckets(b, 1_000_000u64, 50u64)
+    }
+
+    #[bench]
+    fn bench_term_buckets_1_000_000_of_1_000_000(b: &mut test::Bencher) {
+        bench_term_buckets(b, 1_000_000u64, 1_000_000u64)
+    }
+}

src/aggregation/intermediate_agg_result.rs

@@ -499,7 +499,7 @@ impl IntermediateTermBucketResult {
         match req.order.target {
             OrderTarget::Key => {
                 buckets.sort_by(|left, right| {
-                    if req.order.order == Order::Asc {
+                    if req.order.order == Order::Desc {
                         left.key.partial_cmp(&right.key)
                     } else {
                         right.key.partial_cmp(&left.key)

src/aggregation/mod.rs

@@ -1156,6 +1156,12 @@ mod tests {
             r#"FieldNotFound("not_exist_field")"#
         );
 
+        let agg_res = avg_on_field("scores_i64");
+        assert_eq!(
+            format!("{:?}", agg_res),
+            r#"InvalidArgument("Invalid field cardinality on field scores_i64 expected SingleValue, but got MultiValues")"#
+        );
+
         Ok(())
     }
 

src/core/inverted_index_reader.rs

@@ -135,8 +135,6 @@ impl InvertedIndexReader {
         term_info: &TermInfo,
         option: IndexRecordOption,
     ) -> io::Result<SegmentPostings> {
-        let option = option.downgrade(self.record_option);
-
         let block_postings = self.read_block_postings_from_terminfo(term_info, option)?;
         let position_reader = {
             if option.has_positions() {

src/indexer/segment_writer.rs

@@ -834,23 +834,20 @@ mod tests {
         // This is a bit of a contrived example.
         let tokens = PreTokenizedString {
             text: "contrived-example".to_string(), //< I can't think of a use case where this corner case happens in real life.
-            tokens: vec![
-                Token {
-                    // Not the last token, yet ends after the last token.
-                    offset_from: 0,
-                    offset_to: 14,
-                    position: 0,
-                    text: "long_token".to_string(),
-                    position_length: 3,
-                },
-                Token {
-                    offset_from: 0,
-                    offset_to: 14,
-                    position: 1,
-                    text: "short".to_string(),
-                    position_length: 1,
-                },
-            ],
+            tokens: vec![Token { // Not the last token, yet ends after the last token.
+                offset_from: 0,
+                offset_to: 14,
+                position: 0,
+                text: "long_token".to_string(),
+                position_length: 3,
+            },
+            Token {
+                offset_from: 0,
+                offset_to: 14,
+                position: 1,
+                text: "short".to_string(),
+                position_length: 1,
+            }],
         };
         doc.add_pre_tokenized_text(text, tokens);
         doc.add_text(text, "hello");

src/query/term_query/term_query.rs

@@ -109,7 +109,6 @@ impl TermQuery {
         } else {
             IndexRecordOption::Basic
         };
-
         Ok(TermWeight::new(
             self.term.clone(),
             index_record_option,

src/schema/index_record_option.rs

@@ -49,17 +49,4 @@ impl IndexRecordOption {
             IndexRecordOption::WithFreqsAndPositions => true,
         }
     }
-
-    /// Downgrades to the next level if provided `IndexRecordOption` is unavailable.
-    pub fn downgrade(&self, other: IndexRecordOption) -> IndexRecordOption {
-        use IndexRecordOption::*;
-
-        match (other, self) {
-            (WithFreqsAndPositions, WithFreqsAndPositions) => WithFreqsAndPositions,
-            (WithFreqs, WithFreqs) => WithFreqs,
-            (WithFreqsAndPositions, WithFreqs) => WithFreqs,
-            (WithFreqs, WithFreqsAndPositions) => WithFreqs,
-            _ => Basic,
-        }
-    }
 }

src/schema/term.rs

@@ -375,7 +375,6 @@ where B: AsRef<[u8]>
     ///
     /// Do NOT rely on this byte representation in the index.
     /// This value is likely to change in the future.
-    #[inline(always)]
     pub fn as_slice(&self) -> &[u8] {
         self.0.as_ref()
     }

src/store/index/block.rs

@@ -90,7 +90,7 @@ impl CheckpointBlock {
             return Ok(());
         }
         let mut doc = read_u32_vint(data);
-        let mut start_offset = VInt::deserialize_u64(data)? as usize;
+        let mut start_offset = read_u32_vint(data) as usize;
         for _ in 0..len {
             let num_docs = read_u32_vint(data);
             let block_num_bytes = read_u32_vint(data) as usize;
@@ -147,15 +147,6 @@ mod tests {
         test_aux_ser_deser(&checkpoints)
     }
 
-    #[test]
-    fn test_block_serialize_large_byte_range() -> io::Result<()> {
-        let checkpoints = vec![Checkpoint {
-            doc_range: 10..12,
-            byte_range: 8_000_000_000..9_000_000_000,
-        }];
-        test_aux_ser_deser(&checkpoints)
-    }
-
     #[test]
     fn test_block_serialize() -> io::Result<()> {
         let offsets: Vec<usize> = (0..11).map(|i| i * i * i).collect();