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Posted to issues@hive.apache.org by "Mostafa Mokhtar (JIRA)" <ji...@apache.org> on 2015/04/14 22:06:58 UTC
[jira] [Updated] (HIVE-10331) ORC : Is null SARG filters out all
row groups written in old ORC format
[ https://issues.apache.org/jira/browse/HIVE-10331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mostafa Mokhtar updated HIVE-10331:
-----------------------------------
Description:
Queries are returning wrong results as all row groups gets filtered out and no rows get scanned.
{code}
SELECT
count(*)
FROM
store_sales
WHERE
ss_addr_sk IS NULL
{code}
With hive.optimize.index.filter disabled we get the correct results
In pickRowGroups stats show that hasNull_ is fales, while the rowgroup actually has null.
Same query runs fine for newly loaded ORC tables.
was:
Queries are returning wrong results as all row groups gets filtered out and no rows get scanned.
{code}
SELECT
count(*)
FROM
store_sales
WHERE
ss_addr_sk IS NULL
{code}
With hive.optimize.index.filter disabled we get the correct results
> ORC : Is null SARG filters out all row groups written in old ORC format
> -----------------------------------------------------------------------
>
> Key: HIVE-10331
> URL: https://issues.apache.org/jira/browse/HIVE-10331
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 1.1.0
> Reporter: Mostafa Mokhtar
> Assignee: Prasanth Jayachandran
> Fix For: 1.2.0
>
>
> Queries are returning wrong results as all row groups gets filtered out and no rows get scanned.
> {code}
> SELECT
> count(*)
> FROM
> store_sales
> WHERE
> ss_addr_sk IS NULL
> {code}
> With hive.optimize.index.filter disabled we get the correct results
> In pickRowGroups stats show that hasNull_ is fales, while the rowgroup actually has null.
> Same query runs fine for newly loaded ORC tables.
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