hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sankar Hariappan (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-23347) MSCK REPAIR cannot discover partitions with upper case directory names.
Date Fri, 15 May 2020 10:52:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-23347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17108164#comment-17108164
] 

Sankar Hariappan commented on HIVE-23347:
-----------------------------------------

[~nareshpr], [~adeshrao]
I think, Hive should treat Year=2020/Month=3/Day=2 and year=2020/month=3/day=2 as same partition.
If both paths exists in storage, then MSCK should throw error as duplication partition directory.
However, dept=Sales and dept=sales are not same partition where dept is String column. Hive
just treats the partition column name as case insensitive but partition values as case sensitive.

> MSCK REPAIR cannot discover partitions with upper case directory names.
> -----------------------------------------------------------------------
>
>                 Key: HIVE-23347
>                 URL: https://issues.apache.org/jira/browse/HIVE-23347
>             Project: Hive
>          Issue Type: Bug
>          Components: Standalone Metastore
>    Affects Versions: 3.1.0
>            Reporter: Sankar Hariappan
>            Assignee: Adesh Kumar Rao
>            Priority: Minor
>              Labels: pull-request-available
>         Attachments: HIVE-23347.01.patch, HIVE-23347.2.patch, HIVE-23347.3.patch, HIVE-23347.4.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> For the following scenario, we expect MSCK REPAIR to discover partitions but it couldn't.
> 1. Have partitioned data path as follows.
> hdfs://mycluster/datapath/t1/Year=2020/Month=03/Day=10
> hdfs://mycluster/datapath/t1/Year=2020/Month=03/Day=11
> 2. create external table t1 (key int, value string) partitioned by (Year int, Month int,
Day int) stored as orc location hdfs://mycluster/datapath/t1'';
> 3. msck repair table t1;
> 4. show partitions t1; --> Returns zero partitions
> 5. select * from t1; --> Returns empty data.
> When the partition directory names are changed to lower case, this works fine.
> hdfs://mycluster/datapath/t1/year=2020/month=03/day=10
> hdfs://mycluster/datapath/t1/year=2020/month=03/day=11



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Mime
View raw message