[
https://issues.apache.org/jira/browse/DRILL-8139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
James Turton resolved DRILL-8139.
---------------------------------
Resolution: Fixed
> Parquet CodecFactory thread safety bug
> --------------------------------------
>
> 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
> Assignee: James Turton
> Priority: Blocker
> Attachments: recording.mp4
>
>
> Update: PARQUET-2126 has been opened to describe the underlying thread safety
> problem in parquet-mr. The rdblue/brotli-codec is also affected.
> 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.
> {code:java}
> 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
> {code}
>
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
