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Posted to issues@carbondata.apache.org by "Prasanna Ravichandran (JIRA)" <ji...@apache.org> on 2018/05/25 13:12:00 UTC
[jira] [Created] (CARBONDATA-2540) MV Dataset - Unionall queries are not fetching data from MV dataset.

Prasanna Ravichandran created CARBONDATA-2540:
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             Summary: MV Dataset - Unionall queries are not fetching data from MV dataset.
                 Key: CARBONDATA-2540
                 URL: https://issues.apache.org/jira/browse/CARBONDATA-2540
             Project: CarbonData
          Issue Type: Bug
          Components: data-query
            Reporter: Prasanna Ravichandran


Unionall queries are not fetching data from MV dataset. 

Test queries:

scala> carbon.sql("drop table if exists fact_table1").show(200,false)
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scala> carbon.sql("CREATE TABLE fact_table1 (empno int, empname String, designation String, doj Timestamp,workgroupcategory int, workgroupcategoryname String, deptno int, deptname String,projectcode int, projectjoindate Timestamp, projectenddate Timestamp,attendance int,utilization int,salary int)STORED BY 'org.apache.carbondata.format'").show(200,false)
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scala> carbon.sql("LOAD DATA local inpath 'hdfs://hacluster/user/prasanna/data_mv.csv' INTO TABLE fact_table1 OPTIONS('DELIMITER'= ',', 'QUOTECHAR'= '"','timestampformat'='dd-MM-yyyy')").show(200,false)
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scala> carbon.sql("LOAD DATA local inpath 'hdfs://hacluster/user/prasanna/data_mv.csv' INTO TABLE fact_table1 OPTIONS('DELIMITER'= ',', 'QUOTECHAR'= '\"','timestampformat'='dd-MM-yyyy')").show(200,false)
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scala> carbon.sql("drop table if exists fact_table2").show(200,false)
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scala> carbon.sql("CREATE TABLE fact_table2 (empno int, empname String, designation String, doj Timestamp,workgroupcategory int, workgroupcategoryname String, deptno int, deptname String,projectcode int, projectjoindate Timestamp, projectenddate Timestamp,attendance int,utilization int,salary int)STORED BY 'org.apache.carbondata.format'").show(200,false)
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scala> carbon.sql("LOAD DATA local inpath 'hdfs://hacluster/user/prasanna/data_mv.csv' INTO TABLE fact_table2 OPTIONS('DELIMITER'= ',', 'QUOTECHAR'= '\"','timestampformat'='dd-MM-yyyy')").show(200,false)
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scala> carbon.sql("LOAD DATA local inpath 'hdfs://hacluster/user/prasanna/data_mv.csv' INTO TABLE fact_table2 OPTIONS('DELIMITER'= ',', 'QUOTECHAR'= '\"','timestampformat'='dd-MM-yyyy')").show(200,false)
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scala> carbon.sql("create datamap mv_unional using 'mv' as Select Z.empno From (Select empno,empname From fact_table1 Union All Select empno,empname from fact_table2) As Z Group By Z.empno").show(200,false)
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scala> carbon.sql("rebuild datamap mv_unional").show()
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scala> carbon.sql("explain Select Z.empno From (Select empno,empname From fact_table1 Union All Select empno,empname from fact_table2) As Z Group By Z.empno").show(200,false)
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|plan |
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|== CarbonData Profiler ==
Table Scan on fact_table1
 - total blocklets: 4
 - filter: none
 - pruned by Main DataMap
 - skipped blocklets: 2
 |
|== Physical Plan ==
*HashAggregate(keys=[empno#2588], functions=[])
+- Exchange hashpartitioning(empno#2588, 200)
 +- *HashAggregate(keys=[empno#2588], functions=[])
 +- Union
 :- *BatchedScan CarbonDatasourceHadoopRelation [ Database name :default, Table name :fact_table1, Schema :Some(StructType(StructField(empno,IntegerType,true), StructField(empname,StringType,true), StructField(designation,StringType,true), StructField(doj,TimestampType,true), StructField(workgroupcategory,IntegerType,true), StructField(workgroupcategoryname,StringType,true), StructField(deptno,IntegerType,true), StructField(deptname,StringType,true), StructField(projectcode,IntegerType,true), StructField(projectjoindate,TimestampType,true), StructField(projectenddate,TimestampType,true), StructField(attendance,IntegerType,true), StructField(utilization,IntegerType,true), StructField(salary,IntegerType,true))) ] default.fact_table1[empno#2588]
 +- *BatchedScan CarbonDatasourceHadoopRelation [ Database name :default, Table name :fact_table2, Schema :Some(StructType(StructField(empno,IntegerType,true), StructField(empname,StringType,true), StructField(designation,StringType,true), StructField(doj,TimestampType,true), StructField(workgroupcategory,IntegerType,true), StructField(workgroupcategoryname,StringType,true), StructField(deptno,IntegerType,true), StructField(deptname,StringType,true), StructField(projectcode,IntegerType,true), StructField(projectjoindate,TimestampType,true), StructField(projectenddate,TimestampType,true), StructField(attendance,IntegerType,true), StructField(utilization,IntegerType,true), StructField(salary,IntegerType,true))) ] default.fact_table2[empno#2514]|
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

 It is accessing data only from the main tables and not from the created MV for the unionall.



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