James Turton created DRILL-8139:
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Summary: Data corruption and occasional segfaults querying
Parquet/gzip under the async column reader and sync page reader
Key: DRILL-8139
URL: https://issues.apache.org/jira/browse/DRILL-8139
Project: Apache Drill
Issue Type: Bug
Components: Storage - Parquet
Affects Versions: 1.19.0
Reporter: James Turton
In previously released versions of Drill, back to at least 1.17, this bug only
appears under the combination of the async column reader and the _sync_ page
reader, as per the reproduction script below. In master, the bug appears under
the async column reader and both the sync and async page readers.
set `store.parquet.compression` = 'gzip';
drop table if exists dfs.tmp.m;
create table dfs.tmp.m as select * from cp.`tpch/supplier.parquet`;
set `store.parquet.reader.pagereader.async` = false;
set `store.parquet.reader.columnreader.async` = true;
select * from dfs.tmp.m order by s_suppkey; -- repeat this last query and watch
the returned data. Eventually you will also failed queries or JVM crashes
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