-
Notifications
You must be signed in to change notification settings - Fork 755
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
6 changed files
with
174 additions
and
9 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
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
134 changes: 134 additions & 0 deletions
134
src/query/service/src/pipelines/processors/transforms/transform_block_compact_no_split.rs
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 +1,134 @@ | ||
| // Copyright 2021 Datafuse Labs | ||
| // | ||
| // 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. | ||
|
|
||
| use databend_common_exception::Result; | ||
| use databend_common_expression::BlockThresholds; | ||
| use databend_common_expression::DataBlock; | ||
| use databend_common_pipeline_transforms::processors::AccumulatingTransform; | ||
| use databend_common_pipeline_transforms::processors::BlockMetaTransform; | ||
| use databend_common_pipeline_transforms::processors::UnknownMode; | ||
|
|
||
| use crate::servers::flight::v1::exchange::ExchangeShuffleMeta; | ||
|
|
||
| pub struct BlockCompactBuilder { | ||
| thresholds: BlockThresholds, | ||
| // Holds blocks that exceeded the threshold and are waiting to be compacted. | ||
| staged_blocks: Vec<DataBlock>, | ||
| // Holds blocks that are partially accumulated but haven't reached the threshold. | ||
| pending_blocks: Vec<DataBlock>, | ||
| accumulated_rows: usize, | ||
| accumulated_bytes: usize, | ||
| } | ||
|
|
||
| impl BlockCompactBuilder { | ||
| pub fn new(thresholds: BlockThresholds) -> Self { | ||
| Self { | ||
| thresholds, | ||
| staged_blocks: vec![], | ||
| pending_blocks: vec![], | ||
| accumulated_rows: 0, | ||
| accumulated_bytes: 0, | ||
| } | ||
| } | ||
|
|
||
| fn create_output_data(blocks: &mut Vec<DataBlock>) -> DataBlock { | ||
| DataBlock::empty_with_meta(ExchangeShuffleMeta::create(std::mem::take(blocks))) | ||
| } | ||
|
|
||
| fn reset_accumulated(&mut self) { | ||
| self.accumulated_rows = 0; | ||
| self.accumulated_bytes = 0; | ||
| } | ||
|
|
||
| fn check_for_compact(&self) -> bool { | ||
| self.thresholds | ||
| .check_for_compact(self.accumulated_rows, self.accumulated_bytes) | ||
| } | ||
| } | ||
|
|
||
| impl AccumulatingTransform for BlockCompactBuilder { | ||
| const NAME: &'static str = "BlockCompactBuilder"; | ||
|
|
||
| fn transform(&mut self, data: DataBlock) -> Result<Vec<DataBlock>> { | ||
| self.accumulated_rows += data.num_rows(); | ||
| self.accumulated_bytes += data.memory_size(); | ||
| if !self | ||
| .thresholds | ||
| .check_large_enough(self.accumulated_rows, self.accumulated_bytes) | ||
| { | ||
| // blocks < N | ||
| self.pending_blocks.push(data); | ||
| return Ok(vec![]); | ||
| } | ||
|
|
||
| let mut res = Vec::with_capacity(2); | ||
| if !self.staged_blocks.is_empty() { | ||
| res.push(Self::create_output_data(&mut self.staged_blocks)); | ||
| } | ||
|
|
||
| if !self.check_for_compact() && !self.pending_blocks.is_empty() { | ||
| // blocks > 2N | ||
| res.push(Self::create_output_data(&mut self.pending_blocks)); | ||
| } else { | ||
| // N <= blocks < 2N | ||
| std::mem::swap(&mut self.staged_blocks, &mut self.pending_blocks); | ||
| } | ||
| self.staged_blocks.push(data); | ||
| self.reset_accumulated(); | ||
| Ok(res) | ||
| } | ||
|
|
||
| fn on_finish(&mut self, _output: bool) -> Result<Vec<DataBlock>> { | ||
| match ( | ||
| self.pending_blocks.is_empty(), | ||
| self.staged_blocks.is_empty(), | ||
| ) { | ||
| (true, true) => Ok(vec![]), | ||
| (true, false) => Ok(vec![Self::create_output_data(&mut self.staged_blocks)]), | ||
| (false, true) => Ok(vec![Self::create_output_data(&mut self.pending_blocks)]), | ||
| (false, false) => { | ||
| for block in &self.staged_blocks { | ||
| self.accumulated_rows += block.num_rows(); | ||
| self.accumulated_bytes += block.memory_size(); | ||
| } | ||
| if self.check_for_compact() { | ||
| self.staged_blocks.append(&mut self.pending_blocks); | ||
| Ok(vec![Self::create_output_data(&mut self.staged_blocks)]) | ||
| } else { | ||
| // blocks > 2N | ||
| Ok(vec![ | ||
| Self::create_output_data(&mut self.staged_blocks), | ||
| Self::create_output_data(&mut self.pending_blocks), | ||
| ]) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| pub struct TransformBlockConcat; | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl BlockMetaTransform<ExchangeShuffleMeta> for TransformBlockConcat { | ||
| const UNKNOWN_MODE: UnknownMode = UnknownMode::Pass; | ||
| const NAME: &'static str = "TransformBlockConcat"; | ||
|
|
||
| fn transform(&mut self, meta: ExchangeShuffleMeta) -> Result<Vec<DataBlock>> { | ||
| if meta.blocks.len() > 1 { | ||
| Ok(vec![DataBlock::concat(&meta.blocks)?]) | ||
| } else { | ||
| Ok(meta.blocks) | ||
| } | ||
| } | ||
| } |
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