Changeset: 58a5d3dc8685 for MonetDB URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=58a5d3dc8685 Modified Files: monetdb5/modules/mosaic/TODO_MOSAIC.txt Branch: mosaic Log Message:
Update TODO's. diffs (30 lines): diff --git a/monetdb5/modules/mosaic/TODO_MOSAIC.txt b/monetdb5/modules/mosaic/TODO_MOSAIC.txt --- a/monetdb5/modules/mosaic/TODO_MOSAIC.txt +++ b/monetdb5/modules/mosaic/TODO_MOSAIC.txt @@ -1,20 +1,22 @@ ####technical depth#### -Make dictionary variable-sized so it can always compress. -Add asserts for unknown compression strategies. (1) +Make dictionary variable-sized so it can always compress. We are going to use vheap for this. +dictionary encoding should use the ordered property of its dictionary in the algebraic operators +decouple estimation completely from compression: there should be two runs: one for estimating the blocks and one to actual compress according to the estimations. Test null semantics mosaic.select (c,nil:any_1, nil:any_1,true,true,(true|false)) is not working correctly: should result in c == nil or c!=nil(anti). -dictionary encoding should use the ordered property of its dictionary in the algebraic operators Use bit vectors more aggressively in mosaic_delta --- then resolve test mosaic_delta_timestamp --- and possibly other compression techniques as well. Somehow force mosaic to only use specified compressions even if inefficient. This poses a design problem for dictionary compression though. +fix layout call. Add test for float/double delta compression: check if the hardcoded compression expression are correct. See also (2) Add asserts on type degeneration for bit => bte daytime => lng timestmap => lng date => int. -Remove task-factor and range->factor or refactor them. +Fix the task-factor array. See if we can re-introduce landmark stuff somehow. Fix/check/test MOSlayout. benchmark ####code issues#### +move mask, bits, framebits from MosaicHdr to MosaicBlkHeader_frame_t. mosaic_prefix.c: prefix code does not use macro's!!!! mosaic_delta.c: improve the macro's: for instance get rid of hardcoded expression arguments in DELTAcompress. (2*) mosaic_<compression>.c: for type macro's use macro-wised inline functions. _______________________________________________ checkin-list mailing list checkin-list@monetdb.org https://www.monetdb.org/mailman/listinfo/checkin-list
