Quanlong Huang has uploaded this change for review. (
http://gerrit.cloudera.org:8080/8147
Change subject: IMPALA-5448: fix invalid number of splits reported in Parquet
scan node
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IMPALA-5448: fix invalid number of splits reported in Parquet scan node
Parquet splits with multi columns are marked as completed by using
HdfsScanNodeBase::RangeComplete(). It duplicately counts the file types
as column codec types. Thus the number of parquet splits are the real count
multiplies number of materialized columns.
Furthermore, according to the Parquet definition, it allows mixed compression
codecs on different columns. This’s handled in this patch as well. A parquet
file
using gzip and snappy compression codec will be reported as:
FileFormats: PARQUET/(GZIP,SNAPPY):1
This patch introduces a compression types set for the above cases.
Testing:
Add end-to-end tests handling parquet files with all columns compressed in
snappy, and handling parquet files with multi compression codec.
Change-Id: Iaacc2d775032f5707061e704f12e0a63cde695d1
---
M be/src/exec/hdfs-scan-node-base.cc
M be/src/exec/hdfs-scan-node-base.h
M testdata/datasets/functional/functional_schema_template.sql
M testdata/datasets/functional/schema_constraints.csv
A testdata/multi_compression_parquet_data/README
A testdata/multi_compression_parquet_data/tinytable_0_gzip_snappy.parq
A testdata/multi_compression_parquet_data/tinytable_1_snappy_gzip.parq
A
testdata/workloads/functional-query/queries/QueryTest/hdfs_parquet_scan_node_profile.test
M tests/query_test/test_scanners.py
9 files changed, 85 insertions(+), 8 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/47/8147/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Iaacc2d775032f5707061e704f12e0a63cde695d1
Gerrit-Change-Number: 8147
Gerrit-PatchSet: 1
Gerrit-Owner: Quanlong Huang <[email protected]>
