Hello Kudu Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/3990
to look at the new patch set (#4).
Change subject: Predicate evaluation pushdown
......................................................................
Predicate evaluation pushdown
The premise of this patch is to avoid the excessive use of CPU when
evaluating column predicates in specific cases. Dictionary blocks,
for instance, can evaluate predicates by comparing codewords (UINT32)
rather than doing string comparisons.
See the performance doc for a look into the performance differences
for dictionary encoding and plain encoding:
https://github.com/anjuwong/kudu/blob/pred-pushdown/docs/decoder-eval-perf.md
See the design-doc for predicate-eval-pushdown for a brief overview of the
considered implementations:
https://github.com/anjuwong/kudu/blob/sorted-dict-block/docs/design-docs/predicate-eval-pushdown.md
This patch uses the predicate-set approach using a bitmap.
Change-Id: I31e4cce21e99f63b089d7c84410af8ed914cb576
---
M src/kudu/cfile/binary_dict_block.cc
M src/kudu/cfile/binary_dict_block.h
M src/kudu/cfile/binary_plain_block.cc
M src/kudu/cfile/binary_plain_block.h
M src/kudu/cfile/binary_prefix_block.h
M src/kudu/cfile/block_encodings.h
M src/kudu/cfile/bshuf_block.h
M src/kudu/cfile/cfile_reader.cc
M src/kudu/cfile/cfile_reader.h
M src/kudu/cfile/gvint_block.h
M src/kudu/cfile/plain_bitmap_block.h
M src/kudu/cfile/plain_block.h
M src/kudu/cfile/rle_block.h
A src/kudu/common/column_eval_context.h
M src/kudu/common/column_predicate.cc
M src/kudu/common/column_predicate.h
M src/kudu/common/generic_iterators-test.cc
M src/kudu/common/generic_iterators.cc
M src/kudu/common/generic_iterators.h
M src/kudu/common/iterator.h
M src/kudu/common/rowblock.h
M src/kudu/common/schema.h
M src/kudu/common/types.cc
M src/kudu/common/types.h
M src/kudu/tablet/CMakeLists.txt
M src/kudu/tablet/cfile_set.cc
M src/kudu/tablet/cfile_set.h
M src/kudu/tablet/delta_applier.cc
M src/kudu/tablet/delta_applier.h
M src/kudu/tablet/delta_iterator_merger.cc
M src/kudu/tablet/delta_iterator_merger.h
M src/kudu/tablet/delta_store.h
M src/kudu/tablet/deltafile.cc
M src/kudu/tablet/deltafile.h
M src/kudu/tablet/deltamemstore.cc
M src/kudu/tablet/deltamemstore.h
A src/kudu/tablet/tablet-decoder-eval-test.cc
M src/kudu/tablet/tablet-test-util.h
38 files changed, 809 insertions(+), 44 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/90/3990/4
--
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I31e4cce21e99f63b089d7c84410af8ed914cb576
Gerrit-PatchSet: 4
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Andrew Wong <andrew.w...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <d...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
