database/mariadb-columnstore-engine
1
0
Fork 0
mirror of https://github.com/mariadb-corporation/mariadb-columnstore-engine.git synced 2025-07-30 19:23:07 +03:00
Code Activity

MCOL-5021 Add an option in Columnstore.xml, fastdelete (disabled

Browse Source 
by default), which when enabled, indiscriminately invalidates all
column extents and performs the actual DELETE only on the AUX
column. The trade-off with this approach would now be that the
first SELECT for certain query patterns (those containing a WHERE
predicate) after the DELETE operation will slow down as the
invalidated column extent would need to be scanned again to set
the min/max values.
This commit is contained in:
Gagan Goel
2022-05-26 15:13:19 -04:00
parent 2280b1dd25
commit c8b6b154bf
6 changed files with 96 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
primitives/linux-port/column.cpp
View File

@ -1655,9 +1655,8 @@ void vectorizedFiltering(NewColRequestHeader* in, ColResultHeader* out, const T*
for (uint16_t i = 0; i < iterNumberAux; ++i)
{
dataVecAux = simdDataLoadTemplate<VTAux, SimdWrapperTypeAux, HAS_INPUT_RIDS, uint8_t>(simdProcessorAux, blockAux,
origBlockAux, ridArray, i)
.v;
dataVecAux = simdDataLoad<VTAux, SimdWrapperTypeAux, HAS_INPUT_RIDS, uint8_t>(simdProcessorAux, blockAux,
origBlockAux, ridArray, i).v;
nonEmptyMaskAux[i] = simdProcessorAux.nullEmptyCmpNe(dataVecAux, emptyFilterArgVecAux);
blockAux += VECTOR_SIZE_AUX;
ridArray += VECTOR_SIZE_AUX;