-
Notifications
You must be signed in to change notification settings - Fork 752
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
67 changed files
with
1,543 additions
and
577 deletions.
There are no files selected for viewing
Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.
Oops, something went wrong.
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
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
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 +1,178 @@ | ||
| // Copyright 2023 Databend Cloud | ||
| // | ||
| // Licensed under the Elastic 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 | ||
| // | ||
| // https://www.elastic.co/licensing/elastic-license | ||
| // | ||
| // 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 std::sync::Arc; | ||
|
|
||
| use databend_common_base::base::GlobalInstance; | ||
| use databend_common_catalog::plan::PushDownInfo; | ||
| use databend_common_catalog::plan::ReclusterInfoSideCar; | ||
| use databend_common_catalog::table::Table; | ||
| use databend_common_catalog::table_context::TableContext; | ||
| use databend_common_exception::Result; | ||
| use databend_common_expression::BlockThresholds; | ||
| use databend_common_storages_fuse::pruning::create_segment_location_vector; | ||
| use databend_common_storages_fuse::statistics::reducers::merge_statistics_mut; | ||
| use databend_common_storages_fuse::FuseTable; | ||
| use databend_common_storages_fuse::SegmentLocation; | ||
| use databend_common_storages_fuse::DEFAULT_BLOCK_PER_SEGMENT; | ||
| use databend_common_storages_fuse::FUSE_OPT_KEY_BLOCK_PER_SEGMENT; | ||
| use databend_enterprise_hilbert_clustering::HilbertClusteringHandler; | ||
| use databend_enterprise_hilbert_clustering::HilbertClusteringHandlerWrapper; | ||
| use databend_storages_common_table_meta::meta::CompactSegmentInfo; | ||
| use databend_storages_common_table_meta::meta::Statistics; | ||
| use databend_storages_common_table_meta::meta::TableSnapshot; | ||
|
|
||
| pub struct RealHilbertClusteringHandler {} | ||
|
|
||
| #[async_trait::async_trait] | ||
| impl HilbertClusteringHandler for RealHilbertClusteringHandler { | ||
| #[async_backtrace::framed] | ||
| async fn do_hilbert_clustering( | ||
| &self, | ||
| table: Arc<dyn Table>, | ||
| ctx: Arc<dyn TableContext>, | ||
| push_downs: Option<PushDownInfo>, | ||
| ) -> Result<Option<(ReclusterInfoSideCar, Arc<TableSnapshot>)>> { | ||
| let Some((cluster_key_id, _)) = table.cluster_key_meta() else { | ||
| return Ok(None); | ||
| }; | ||
|
|
||
| let fuse_table = FuseTable::try_from_table(table.as_ref())?; | ||
| let Some(snapshot) = fuse_table.read_table_snapshot().await? else { | ||
| // no snapshot, no recluster. | ||
| return Ok(None); | ||
| }; | ||
|
|
||
| let block_per_seg = | ||
| fuse_table.get_option(FUSE_OPT_KEY_BLOCK_PER_SEGMENT, DEFAULT_BLOCK_PER_SEGMENT); | ||
| let block_thresholds = fuse_table.get_block_thresholds(); | ||
| let thresholds = BlockThresholds { | ||
| max_rows_per_block: block_per_seg * block_thresholds.max_rows_per_block, | ||
| min_rows_per_block: block_per_seg * block_thresholds.min_rows_per_block, | ||
| max_bytes_per_block: block_per_seg * block_thresholds.max_bytes_per_block, | ||
| }; | ||
| let segment_locations = snapshot.segments.clone(); | ||
| let segment_locations = create_segment_location_vector(segment_locations, None); | ||
|
|
||
| let max_threads = ctx.get_settings().get_max_threads()? as usize; | ||
| let chunk_size = max_threads * 4; | ||
| let mut target_segments = vec![]; | ||
| let mut total_rows = 0; | ||
| let mut total_size = 0; | ||
| let mut stable = false; | ||
| 'FOR: for chunk in segment_locations.chunks(chunk_size) { | ||
| // read segments. | ||
| let compact_segments = FuseTable::segment_pruning( | ||
| &ctx, | ||
| fuse_table.schema_with_stream(), | ||
| fuse_table.get_operator(), | ||
| &push_downs, | ||
| fuse_table.get_storage_format(), | ||
| chunk.to_vec(), | ||
| ) | ||
| .await?; | ||
|
|
||
| if compact_segments.is_empty() { | ||
| continue; | ||
| } | ||
|
|
||
| for (location, segment) in compact_segments.into_iter() { | ||
| total_rows += segment.summary.row_count as usize; | ||
| total_size += segment.summary.uncompressed_byte_size as usize; | ||
| if !thresholds.check_large_enough(total_rows, total_size) { | ||
| // totals < N | ||
| target_segments.push((location, segment.clone())); | ||
| continue; | ||
| } | ||
|
|
||
| if thresholds.check_for_compact(total_rows, total_size) { | ||
| // N <= totals < 2N | ||
| target_segments.push((location, segment.clone())); | ||
| } else { | ||
| // totals >= 2N | ||
| let new_target_segments = vec![(location, segment)]; | ||
| if Self::check_for_recluster(&new_target_segments, cluster_key_id, stable) { | ||
| target_segments = new_target_segments; | ||
| stable = true; | ||
| break 'FOR; | ||
| } | ||
| }; | ||
|
|
||
| if Self::check_for_recluster(&target_segments, cluster_key_id, stable) { | ||
| stable = true; | ||
| break 'FOR; | ||
| } | ||
| target_segments.clear(); | ||
| total_rows = 0; | ||
| total_size = 0; | ||
| } | ||
| } | ||
|
|
||
| if !stable && !Self::check_for_recluster(&target_segments, cluster_key_id, stable) { | ||
| return Ok(None); | ||
| } | ||
|
|
||
| let rows_per_block = block_thresholds.calc_rows_per_block(total_size, total_rows) as u64; | ||
| let block_size = ctx.get_settings().get_max_block_size()?; | ||
| ctx.get_settings() | ||
| .set_max_block_size(rows_per_block.min(block_size))?; | ||
|
|
||
| let mut removed_statistics = Statistics::default(); | ||
| let mut removed_segment_indexes = Vec::with_capacity(target_segments.len()); | ||
| for (segment_loc, segment) in target_segments { | ||
| ctx.add_selected_segment_location(segment_loc.location); | ||
| removed_segment_indexes.push(segment_loc.segment_idx); | ||
| merge_statistics_mut( | ||
| &mut removed_statistics, | ||
| &segment.summary, | ||
| Some(cluster_key_id), | ||
| ); | ||
| } | ||
|
|
||
| let recluster_info = ReclusterInfoSideCar { | ||
| merged_blocks: vec![], | ||
| removed_segment_indexes, | ||
| removed_statistics, | ||
| }; | ||
| Ok(Some((recluster_info, snapshot))) | ||
| } | ||
| } | ||
|
|
||
| impl RealHilbertClusteringHandler { | ||
| pub fn init() -> Result<()> { | ||
| let handler = RealHilbertClusteringHandler {}; | ||
| let wrapper = HilbertClusteringHandlerWrapper::new(Box::new(handler)); | ||
| GlobalInstance::set(Arc::new(wrapper)); | ||
| Ok(()) | ||
| } | ||
|
|
||
| fn check_for_recluster( | ||
| segments: &[(SegmentLocation, Arc<CompactSegmentInfo>)], | ||
| default_cluster_id: u32, | ||
| stable: bool, | ||
| ) -> bool { | ||
| match segments.len() { | ||
| 0 => false, | ||
| 1 => segments[0] | ||
| .1 | ||
| .summary | ||
| .cluster_stats | ||
| .as_ref() | ||
| .map_or(true, |stats| { | ||
| stats.cluster_key_id != default_cluster_id || (stats.level != -1 && stable) | ||
| }), | ||
| _ => true, | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.