[
https://issues.apache.org/jira/browse/IMPALA-11444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Quanlong Huang resolved IMPALA-11444.
-------------------------------------
Fix Version/s: Impala 3.4.2
Resolution: Fixed
> Wrong results in reading wide rows from ORC
> -------------------------------------------
>
> Key: IMPALA-11444
> URL: https://issues.apache.org/jira/browse/IMPALA-11444
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 3.4.0, Impala 3.4.1
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Blocker
> Labels: correctness
> Fix For: Impala 3.4.2
>
>
> The bug only exists in 3.4 branches where we have IMPALA-9228 and is missing
> IMPALA-9469.
> When reading from a wide table with tuple size larger than , the orc scanner
> produces wrong results. The issue can be reproduced using the attached
> CreateTable stmt and the ORC file.
> {code:sql}
> $ bin/impala-shell.sh --quiet -f create-table-512cols.sql
> $ bin/impala-shell.sh -B --quiet -q 'show table stats orc_tbl_512cols'
> -1 0 0B NOT CACHED NOT CACHED ORC false
> hdfs://localhost:20500/test-warehouse/orc_tbl_512cols
> $ hdfs dfs -put widerow_512cols.orc
> hdfs://localhost:20500/test-warehouse/orc_tbl_512cols
> $ bin/impala-shell.sh -q 'refresh orc_tbl_512cols'
> {code}
> Then run the following query:
> {code:sql}
> $ bin/impala-shell.sh -B -q "select * from orc_tbl_512cols where col0 = '1'"
> {code}
> The result should be only one row with all values as '1'. However, we get one
> rwo with all values as '1024'.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
