[jira] [Commented] (HIVE-6431) Hive table name start with underscore (_)

["Christopher (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-6431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120628#comment-16120628 ] 

Christopher commented on HIVE-6431:
-----------------------------------

Why on earth are _filenames prohibited??

> Hive table name start with underscore (_)
> -----------------------------------------
>
>                 Key: HIVE-6431
>                 URL: https://issues.apache.org/jira/browse/HIVE-6431
>             Project: Hive
>          Issue Type: Bug
>          Components: Database/Schema
>    Affects Versions: 0.12.0
>            Reporter: Kuek Chiew Yea
>
> When I create a hive table with table name start with underscore, I am able to create successfully. The command that I am using is as the following:
> *CREATE TABLE `_testtable` AS SELECT * FROM `dimdate`;*
> Once created, I issue a command (as following) to query all records from that table.
> *SELECT * FROM `_testtable`;*
> However, I got the error as the following:
> *Failed with exception java.io.IOException:org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: hdfs://sandbox:8020/apps/hive/warehouse/_testtable*
> When I run the hdfs command to list the file in directory */apps/hive/warehouse/_testtable*, I am able to get list of files in that directory.



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