Mostafa Mokhtar created IMPALA-5621:
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Summary: Apply Parquet stats optimizations in conjunction with
predicates against Parquet stats
Key: IMPALA-5621
URL: https://issues.apache.org/jira/browse/IMPALA-5621
Project: IMPALA
Issue Type: Sub-task
Components: Backend
Reporter: Mostafa Mokhtar
Assignee: Taras Bobrovytsky
Impala can skip processing blocks based on predicates against Parquet
statistics, for Rowgroups that qualify the predicates use data stored in the
Parquet statistics to speedup the query
{code}
select count(*), max(ss_item_sk) from store_sales where where ss_item_sk > 10
and ss_item_sk < 9999999999;
{code}
For RowGroups that have min(ss_item_sk) > 10 and max(ss_item_sk) the scanner
should use the count stored in the stats opposed to evaluating each row in the
RowGroup, same thing applies to min/max values.
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