Jerry Ylilammi created DRILL-4193:
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Summary: All Parquet columns are loaded when querying S3
Key: DRILL-4193
URL: https://issues.apache.org/jira/browse/DRILL-4193
Project: Apache Drill
Issue Type: Bug
Components: Storage - Parquet
Affects Versions: 1.3.0
Reporter: Jerry Ylilammi
Drill starts downloading all data from S3 not making use of Parquet being
columnar format and only loading required column.
Query:
{code}SELECT DISTINCT data.measurement.cid
FROM mys3bucket.`test/datatable` AS data;{code}
Parquet file:
{code}...
measurement:
.cid: INT64 GZIP DO:0 FPO:9380624 SZ:110/76/0.69 VC:32327
ENC:BIT_PACKED,PLAIN_DICTIONARY,RLE
...{code}
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