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https://issues.apache.org/jira/browse/SPARK-28930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jobit mathew updated SPARK-28930:
---------------------------------
Environment: (was: _*_emphasized text_*_)
> Spark DESC FORMATTED TABLENAME information display issues
> ---------------------------------------------------------
>
> Key: SPARK-28930
> URL: https://issues.apache.org/jira/browse/SPARK-28930
> Project: Spark
> Issue Type: Bug
> Components: Spark Shell, SQL
> Affects Versions: 2.4.3
> Reporter: jobit mathew
> Priority: Minor
>
> Spark DESC FORMATTED TABLENAME information display issues.Showing incorrect
> *Last Access time and* feeling some information displays can make it better.
> Test steps:
> 1. Open spark sql
> 2. Create table with partition
> CREATE EXTERNAL TABLE IF NOT EXISTS employees_info_extended ( id INT, name
> STRING, usd_flag STRING, salary DOUBLE, deductions MAP<STRING, DOUBLE>,
> address STRING ) PARTITIONED BY (entrytime STRING) STORED AS TEXTFILE
> location 'hdfs://hacluster/user/sparkhive/warehouse';
> 3. from spark sql check the table description
> desc formatted tablename;
> 4. From scala shell check the table description
> sql("desc formatted tablename").show()
> Issue1:
> If there is no comment for spark scala shell shows *"null" in small letters*
> but all other places Hive beeline/Spark beeline/Spark SQL it is showing in
> *CAPITAL "NULL*". Better to show same in all places.
>
> *scala>* sql("desc formatted employees_info_extended").show(false);
> +----------------------------+----------------------------+-------+
> |col_name |data_type |*comment*|
> +----------------------------+----------------------------+-------+
> |id |int |*null* |
> |name |string |*null* |
> |usd_flag |string |*null* |
> |salary |double |*null* |
> |deductions |map<string,double> |*null* |
> |address |string |null |
> |entrytime |string |null |
> |# Partition Information | | |
> |# col_name |data_type |comment|
> |entrytime |string |null |
> | | | |
> |# Detailed Table Information| | |
> |Database |sparkdb__ | |
> |Table |employees_info_extended | |
> |Owner |root | |
> *|Created Time |Tue Aug 20 13:42:06 CST 2019| |*
> *|Last Access |Thu Jan 01 08:00:00 CST 1970| |*
> |Created By |Spark 2.4.3 | |
> |Type |EXTERNAL | |
> |Provider |hive | |
> +----------------------------+----------------------------+-------+
> only showing top 20 rows
> *scala>*
> Issue 2:
> Spark SQL "desc formatted tablename" is not showing the header [#
> col_name,data_type,comment|#col_name,data_type,comment] in the top of the
> query result.But header is showing on top of partition description. For
> Better understanding show the header on Top of the query result.
> *spark-sql>* desc formatted employees_info_extended1;
> id int *NULL*
> name string *NULL*
> usd_flag string NULL
> salary double NULL
> deductions map<string,double> NULL
> address string NULL
> entrytime string NULL
> *# Partition Information*
> *# col_name data_type comment*
> entrytime string *NULL*
> # Detailed Table Information
> Database sparkdb__
> Table employees_info_extended1
> Owner spark
> *Created Time Tue Aug 20 14:50:37 CST 2019*
> *Last Access Thu Jan 01 08:00:00 CST 1970*
> Created By Spark 2.3.2.0201
> Type EXTERNAL
> Provider hive
> Table Properties [transient_lastDdlTime=1566286655]
> Location hdfs://hacluster/user/sparkhive/warehouse
> Serde Library org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
> InputFormat org.apache.hadoop.mapred.TextInputFormat
> OutputFormat org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
> Storage Properties [serialization.format=1]
> Partition Provider Catalog
> Time taken: 0.477 seconds, Fetched 27 row(s)
> *spark-sql>*
>
> Issue 3:
> I created the table on Aug 20.So it is showing created time correct .*But
> Last access time showing 1970 Jan 01*. It is not good to show Last access
> time earlier time than the created time.Better to show the correct date and
> time else show UNKNOWN.
> *[Created Time,Tue Aug 20 13:42:06 CST 2019,]*
> *[Last Access,Thu Jan 01 08:00:00 CST 1970,]*
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