[jira] [Commented] (TAJO-1932) TSql need to distinguish between empty string and blank.

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TAJO-1932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14964439#comment-14964439 ] 

ASF GitHub Bot commented on TAJO-1932:
--------------------------------------

Github user dkhwangbo closed the pull request at:

    https://github.com/apache/tajo/pull/830


> TSql need to distinguish between empty string and blank.
> --------------------------------------------------------
>
>                 Key: TAJO-1932
>                 URL: https://issues.apache.org/jira/browse/TAJO-1932
>             Project: Tajo
>          Issue Type: Bug
>          Components: SQL Shell
>    Affects Versions: 0.11.0, 0.12.0
>            Reporter: Jaehwa Jung
>            Assignee: Dongkyu Hwangbo
>              Labels: newbie
>
> Currently, if users enter blank after command type on tsql, they can't get their respected result as following:
> {code:xml}
> default> \d nation
> table name: default.nation
> table uri: hdfs://localhost:9010/tpch/nation
> store type: TEXT
> number of rows: unknown
> volume: 2.2 kB
> Options: 
> 	'totalSize'='0'
> 	'numRows'='-1'
> 	'rawDataSize'='-1'
> 	'COLUMN_STATS_ACCURATE'='false'
> 	'numFiles'='0'
> 	'transient_lastDdlTime'='1441287410'
> 	'text.null'='\\N'
> 	'text.delimiter'='|'
> schema: 
> n_nationkey	INT8
> n_name	TEXT
> n_regionkey	INT8
> n_comment	TEXT
> default> \d  nation
> ERROR: No error message
> default> \dfs -ls /tpch/nation
> Found 1 items
> -rw-r--r--   1 blrunner supergroup       2224 2015-03-30 15:16 /tpch/nation/nation.tbl
> default> \dfs -ls  /tpch/nation
> -ls: Can not create a Path from an empty string
> Usage: hadoop fs [generic options] -ls [-d] [-h] [-R] [<path> ...]
> {code}



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