[jira] [Commented] (SPARK-11522) input_file_name() returns "" for external tables

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

    [ https://issues.apache.org/jira/browse/SPARK-11522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14992183#comment-14992183 ] 

Xin Wu commented on SPARK-11522:
--------------------------------

I can recreate this issue with simpler case on 1.6.0 code base too. 
{code}
spark-sql> create external table external_test (page_id int, impressions int) location 'file:///root/spark-tables/external_test';
{code}
where `external_test` contain one file or 2 files. 

And {code} select input_file_name() as file from external_test {code} returns nothing. 

I am looking into this code.. 

> input_file_name() returns "" for external tables
> ------------------------------------------------
>
>                 Key: SPARK-11522
>                 URL: https://issues.apache.org/jira/browse/SPARK-11522
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.5.1
>            Reporter: Simeon Simeonov
>              Labels: external-tables, hive, sql
>
> Given an external table definition where the data consists of many CSV files, {{input_file_path()}} returns empty strings.
> Table definition:
> {code}
> CREATE EXTERNAL TABLE external_test(page_id INT, impressions INT) 
> ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde'
> WITH SERDEPROPERTIES (
>    "separatorChar" = ",",
>    "quoteChar"     = "\"",
>    "escapeChar"    = "\\"
> )  
> LOCATION 'file:///Users/sim/spark/test/external_test'
> {code}
> Query: 
> {code}
> sql("SELECT input_file_name() as file FROM external_test").show
> {code}
> Output:
> {code}
> +----+
> |file|
> +----+
> |    |
> |    |
> ...
> |    |
> +----+
> {code}



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