-
Notifications
You must be signed in to change notification settings - Fork 1.2k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
perf(sql): introduce fast path for ordered and limited queries over s…
…ingle long column (#5152)
- Loading branch information
Showing
44 changed files
with
1,982 additions
and
307 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
116 changes: 116 additions & 0 deletions
116
core/src/main/java/io/questdb/cairo/map/OrderedMapFixedSizeCursor.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /******************************************************************************* | ||
| * ___ _ ____ ____ | ||
| * / _ \ _ _ ___ ___| |_| _ \| __ ) | ||
| * | | | | | | |/ _ \/ __| __| | | | _ \ | ||
| * | |_| | |_| | __/\__ \ |_| |_| | |_) | | ||
| * \__\_\\__,_|\___||___/\__|____/|____/ | ||
| * | ||
| * Copyright (c) 2014-2019 Appsicle | ||
| * Copyright (c) 2019-2024 QuestDB | ||
| * | ||
| * 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. | ||
| * | ||
| ******************************************************************************/ | ||
|
|
||
| package io.questdb.cairo.map; | ||
|
|
||
| import io.questdb.cairo.sql.Function; | ||
| import io.questdb.cairo.sql.Record; | ||
| import io.questdb.cairo.sql.SqlExecutionCircuitBreaker; | ||
| import io.questdb.std.DirectLongLongHeap; | ||
| import io.questdb.std.bytes.Bytes; | ||
|
|
||
| class OrderedMapFixedSizeCursor implements OrderedMapCursor { | ||
| private final long entrySize; | ||
| private final OrderedMapFixedSizeRecord recordA; | ||
| private final OrderedMapFixedSizeRecord recordB; | ||
| private long heapAddr; | ||
| private long heapStart; | ||
| private int remaining; | ||
| private int size; | ||
|
|
||
| OrderedMapFixedSizeCursor(OrderedMapFixedSizeRecord record, OrderedMap map) { | ||
| assert map.keySize() != -1; | ||
| this.recordA = record; | ||
| this.recordB = record.clone(); | ||
| this.entrySize = Bytes.align8b(map.keySize() + map.valueSize()); | ||
| } | ||
|
|
||
| @Override | ||
| public void calculateSize(SqlExecutionCircuitBreaker circuitBreaker, Counter counter) { | ||
| if (remaining > 0) { | ||
| counter.add(remaining); | ||
| remaining = 0; | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void close() { | ||
| // no-op | ||
| } | ||
|
|
||
| @Override | ||
| public MapRecord getRecord() { | ||
| return recordA; | ||
| } | ||
|
|
||
| @Override | ||
| public MapRecord getRecordB() { | ||
| return recordB; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean hasNext() { | ||
| if (remaining > 0) { | ||
| recordA.of(heapAddr); | ||
| heapAddr += entrySize; | ||
| remaining--; | ||
| return true; | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| @Override | ||
| public OrderedMapFixedSizeCursor init(long heapStart, long heapLimit, int size) { | ||
| this.heapAddr = this.heapStart = heapStart; | ||
| this.remaining = this.size = size; | ||
| recordA.setLimit(heapLimit); | ||
| recordB.setLimit(heapLimit); | ||
| return this; | ||
| } | ||
|
|
||
| @Override | ||
| public void longTopK(DirectLongLongHeap heap, Function recordFunction) { | ||
| for (long addr = heapStart, lim = heapStart + entrySize * size; addr < lim; addr += entrySize) { | ||
| recordA.of(addr); | ||
| long v = recordFunction.getLong(recordA); | ||
| heap.add(addr, v); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void recordAt(Record record, long atRowId) { | ||
| ((OrderedMapFixedSizeRecord) record).of(atRowId); | ||
| } | ||
|
|
||
| @Override | ||
| public long size() { | ||
| return size; | ||
| } | ||
|
|
||
| @Override | ||
| public void toTop() { | ||
| heapAddr = heapStart; | ||
| remaining = size; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.