[CARBONDATA-3938] In Hive read table, we are unable to read a projection column or read a full scan - select * query. Even the aggregate queries are not working.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0.0
• Component/s: hive-integration
• Assignee: Unassigned
• Reporter: Prasanna Ravichandran
• Created: 31/Jul/20 10:41
• Updated: 21/Oct/20 14:03

Description

In Hive read table, we are unable to read a projection column or full scan query. But the aggregate queries are working fine.

 

Test query:

 

--spark beeline;

drop table if exists uniqdata;

drop table if exists uniqdata1;

CREATE TABLE uniqdata(CUST_ID int,CUST_NAME String,ACTIVE_EMUI_VERSION string, DOB timestamp, DOJ timestamp, BIGINT_COLUMN1 bigint,BIGINT_COLUMN2 bigint,DECIMAL_COLUMN1 decimal(30,10), DECIMAL_COLUMN2 decimal(36,10),Double_COLUMN1 double, Double_COLUMN2 double,INTEGER_COLUMN1 int) stored as carbondata ;

LOAD DATA INPATH 'hdfs://hacluster/user/prasanna/2000_UniqData.csv' into table uniqdata OPTIONS('DELIMITER'=',', 'QUOTECHAR'='"','BAD_RECORDS_ACTION'='FORCE','FILEHEADER'='CUST_ID,CUST_NAME,ACTIVE_EMUI_VERSION,DOB,DOJ,BIGINT_COLUMN1,BIGINT_COLUMN2,DECIMAL_COLUMN1,DECIMAL_COLUMN2,Double_COLUMN1,Double_COLUMN2,INTEGER_COLUMN1');

CREATE TABLE IF NOT EXISTS uniqdata1 (CUST_ID int,CUST_NAME String,ACTIVE_EMUI_VERSION string, DOB timestamp, DOJ timestamp, BIGINT_COLUMN1 bigint,BIGINT_COLUMN2 bigint,DECIMAL_COLUMN1 decimal(30,10), DECIMAL_COLUMN2 decimal(36,10),Double_COLUMN1 double, Double_COLUMN2 double,INTEGER_COLUMN1 int) ROW FORMAT SERDE 'org.apache.carbondata.hive.CarbonHiveSerDe' WITH SERDEPROPERTIES ('mapreduce.input.carboninputformat.databaseName'='default','mapreduce.input.carboninputformat.tableName'='uniqdata') STORED AS INPUTFORMAT 'org.apache.carbondata.hive.MapredCarbonInputFormat' OUTPUTFORMAT 'org.apache.carbondata.hive.MapredCarbonOutputFormat' LOCATION 'hdfs://hacluster/user/hive/warehouse/uniqdata';

select  count  from uniqdata1;

 

 

--Hive Beeline;

select count from uniqdata1; -not working, returning 0 rows, eventhough 2000 rows are there;-Issue 1 on Hive read format table;

select * from uniqdata1; -Return no rows;-Issue 2 - a) full scan on Hive read format table;

select cust_id from uniqdata1 limit 5;--Return no rows;–Issue 2-b select query with projection, not working, returning now rows;

 Attached the logs for your reference.

With the Hive write table the aggregate& filter queries are not working but select * full scan queries are working.

All 3 Issues (Full scan - select *, filter queries and aggregate queries) is not working in Hive read format table.

This issue also exists when a normal carbon table(created through stored as carbondata) is created in Spark and data is read through select query from Hive beeline.)