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[#23460] DocDB: Read vector index data
Summary: This diff implements reading vector index data stored in DocDB. Jira: DB-12380 Test Plan: VectorIndexDocDBTest.Read Reviewers: mbautin, aleksandr.ponomarenko Reviewed By: mbautin Subscribers: ybase Tags: #jenkins-ready Differential Revision: https://phorge.dev.yugabyte.com/D37155
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| // Copyright (c) YugabyteDB, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except | ||
| // in compliance with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software distributed under the License | ||
| // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express | ||
| // or implied. See the License for the specific language governing permissions and limitations | ||
| // under the License. | ||
| // | ||
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| #include "yb/docdb/vector_index.h" | ||
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| namespace yb::docdb { | ||
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| namespace detail { | ||
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| void AppendSubkey(dockv::KeyBytes& key, VectorIndexLevel level) { | ||
| key.AppendKeyEntryType(dockv::KeyEntryType::kUInt32); | ||
| key.AppendUInt32(level); | ||
| } | ||
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| void AppendSubkey(dockv::KeyBytes& key, VertexId id) { | ||
| key.AppendKeyEntryType(dockv::KeyEntryType::kVertexId); | ||
| key.AppendUInt64(id); | ||
| } | ||
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| } // namespace detail | ||
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| } // namespace yb::docdb |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| // Copyright (c) YugabyteDB, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except | ||
| // in compliance with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software distributed under the License | ||
| // is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express | ||
| // or implied. See the License for the specific language governing permissions and limitations | ||
| // under the License. | ||
| // | ||
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| #include "yb/docdb/vector_index_read.h" | ||
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| #include "yb/docdb/docdb_rocksdb_util.h" | ||
| #include "yb/docdb/intent_aware_iterator.h" | ||
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| #include "yb/util/endian_util.h" | ||
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| namespace yb::docdb { | ||
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| namespace { | ||
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| template <class CoordinateType> | ||
| class VectorIndexRead { | ||
| public: | ||
| using Types = VectorIndexTypes<CoordinateType>; | ||
| using IndexedVector = typename Types::IndexedVector; | ||
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| VectorIndexRead( | ||
| const DocDB& doc_db, const ReadOperationData& read_operation_data) | ||
| : iter_(CreateIntentAwareIterator( | ||
| doc_db, | ||
| // TODO(!!!) add bloom filter usage. | ||
| BloomFilterMode::DONT_USE_BLOOM_FILTER, | ||
| boost::none, | ||
| rocksdb::kDefaultQueryId, | ||
| TransactionOperationContext(), | ||
| read_operation_data, | ||
| /* file_filter= */ nullptr, | ||
| /* iterate_upper_bound= */ nullptr, | ||
| FastBackwardScan::kFalse)) { | ||
| } | ||
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| Result<IndexedVector> GetVector(VertexId id) { | ||
| auto key = MakeVectorIndexKey(id); | ||
| iter_->Seek(key); | ||
| auto kv = VERIFY_RESULT_REF(iter_->Fetch()); | ||
| if (!kv || kv.key != key.AsSlice() || | ||
| kv.value.TryConsumeByte(dockv::ValueEntryTypeAsChar::kTombstone)) { | ||
| return IndexedVector(); | ||
| } | ||
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| return dockv::PrimitiveValue::DecodeFloatVector(kv.value); | ||
| } | ||
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| Result<VectorNodeNeighbors> GetNeighbors(VertexId id, VectorIndexLevel level) { | ||
| auto vertex_level_key_bytes = MakeVectorIndexKey(id, level); | ||
| auto vertex_level_key = vertex_level_key_bytes.AsSlice(); | ||
| iter_->Seek(vertex_level_key); | ||
| auto kv = VERIFY_RESULT_REF(iter_->Fetch()); | ||
| if (!kv || !kv.key.starts_with(vertex_level_key)) { | ||
| return VectorNodeNeighbors(); | ||
| } | ||
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| VectorNodeNeighbors result; | ||
| EncodedDocHybridTime full_write_time(EncodedDocHybridTime::kMin); | ||
| // The list of neighbors. | ||
| if (kv.key == vertex_level_key) { | ||
| auto vector = VERIFY_RESULT(dockv::PrimitiveValue::DecodeUInt64Vector(kv.value)); | ||
| result.insert(vector.begin(), vector.end()); | ||
| full_write_time = kv.write_time; | ||
| for (;;) { | ||
| // Could be useful to seek in case a lot of calls to next does not move iterator to the next | ||
| // key. | ||
| kv = VERIFY_RESULT_REF(iter_->FetchNext()); | ||
| if (!kv || kv.key != vertex_level_key) { | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| auto prev_vertex_id = kInvalidVertexId; | ||
| auto vertex_level_key_size = vertex_level_key.size(); | ||
| while (kv && kv.key.starts_with(vertex_level_key)) { | ||
| if (kv.write_time < full_write_time) { | ||
| kv = VERIFY_RESULT_REF(iter_->FetchNext()); | ||
| continue; | ||
| } | ||
| auto vertex_id_slice = kv.key.WithoutPrefix(vertex_level_key_size); | ||
| RETURN_NOT_OK(dockv::ConsumeKeyEntryType(vertex_id_slice, dockv::KeyEntryType::kVertexId)); | ||
| auto vertex_id = VERIFY_RESULT((CheckedReadFull<uint64_t, BigEndian>(vertex_id_slice))); | ||
| if (vertex_id != prev_vertex_id) { | ||
| auto value_type = dockv::ConsumeValueEntryType(kv.value); | ||
| if (value_type == dockv::ValueEntryType::kNullLow) { | ||
| result.insert(vertex_id); | ||
| } else if (value_type == dockv::ValueEntryType::kTombstone) { | ||
| result.erase(vertex_id); | ||
| } else { | ||
| return STATUS_FORMAT( | ||
| Corruption, "Unexpected value type for directed edge: $0 -> $1 at $2: $3", | ||
| id, vertex_id, level, value_type); | ||
| } | ||
| prev_vertex_id = vertex_id; | ||
| } | ||
| kv = VERIFY_RESULT_REF(iter_->FetchNext()); | ||
| } | ||
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| return result; | ||
| } | ||
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| private: | ||
| std::unique_ptr<IntentAwareIterator> iter_; | ||
| // TODO(!!!) DeadlineInfo& deadline_info_; | ||
| }; | ||
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| } // namespace | ||
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| template <class CoordinateType> | ||
| auto VectorIndexStorage<CoordinateType>::GetVector( | ||
| const ReadOperationData& read_operation_data, VertexId id) | ||
| -> Result<VectorIndexStorage<CoordinateType>::IndexedVector> { | ||
| VectorIndexRead<CoordinateType> read(doc_db_, read_operation_data); | ||
| return read.GetVector(id); | ||
| } | ||
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| template <class CoordinateType> | ||
| auto VectorIndexStorage<CoordinateType>::GetNeighbors( | ||
| const ReadOperationData& read_operation_data, VertexId id, VectorIndexLevel level) | ||
| -> Result<VectorNodeNeighbors> { | ||
| VectorIndexRead<CoordinateType> read(doc_db_, read_operation_data); | ||
| return read.GetNeighbors(id, level); | ||
| } | ||
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| template class VectorIndexStorage<float>; | ||
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| } // namespace yb::docdb |
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