Prasanna Ravichandran created CARBONDATA-2580:
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Summary: MV Datamap - Cannot create two MV`s with same name in
different databases.
Key: CARBONDATA-2580
URL: https://issues.apache.org/jira/browse/CARBONDATA-2580
Project: CarbonData
Issue Type: Bug
Components: data-load, data-query
Environment: 3 Node Opensource ANT cluster
Reporter: Prasanna Ravichandran
Cannot create two MV`s with same name in different databases. If you create a
MV datamap say MV1 in default database, then you could not use the same
name(MV1) for defining another MV datamap in any other database.
Test queries:
scala> carbon.sql("create table ratish(id int, name string) stored by
'carbondata'").show(200,false)
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scala> carbon.sql("insert into ratish select 1,'ram'").show(200,false)
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scala> carbon.sql("insert into ratish select 2,'ravi'").show(200,false)
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scala> carbon.sql("insert into ratish select 3,'raghu'").show(200,false)
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scala> carbon.sql("create datamap radi using 'mv' as select name from
ratish").show(200,false)
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scala> carbon.sql("rebuild datamap radi").show(200,false)
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scala> carbon.sql("explain select name from ratish").show(200,false)
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|plan |
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|== CarbonData Profiler ==
Table Scan on radi_table
- total blocklets: 1
- filter: none
- pruned by Main DataMap
- skipped blocklets: 0
|
|== Physical Plan ==
*Project [ratish_name#13790 AS name#13818]
+- *BatchedScan CarbonDatasourceHadoopRelation [ Database name :default, Table
name :radi_table, Schema
:Some(StructType(StructField(ratish_name,StringType,true))) ]
default.radi_table[ratish_name#13790]|
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
scala> carbon.sql("create database rad").show(200,false)
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scala> carbon.sql("use rad").show(200,false)
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scala> carbon.sql("create table ratish(id int, name string) stored by
'carbondata'").show(200,false)
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scala> carbon.sql("insert into ratish select 1,'ram'").show(200,false)
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scala> carbon.sql("insert into ratish select 2,'ravi'").show(200,false)
++
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scala> carbon.sql("insert into ratish select 3,'raghu'").show(200,false)
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scala> carbon.sql("create datamap radi using 'mv' as select name from
ratish").show(200,false)
java.io.IOException: DataMap with name radi already exists in storage
at
org.apache.carbondata.core.metadata.schema.table.DiskBasedDMSchemaStorageProvider.saveSchema(DiskBasedDMSchemaStorageProvider.java:70)
at
org.apache.carbondata.core.datamap.DataMapStoreManager.saveDataMapSchema(DataMapStoreManager.java:158)
at
org.apache.carbondata.mv.datamap.MVHelper$.createMVDataMap(MVHelper.scala:115)
at
org.apache.carbondata.mv.datamap.MVDataMapProvider.initMeta(MVDataMapProvider.scala:53)
at
org.apache.spark.sql.execution.command.datamap.CarbonCreateDataMapCommand.processMetadata(CarbonCreateDataMapCommand.scala:118)
at
org.apache.spark.sql.execution.command.AtomicRunnableCommand.run(package.scala:90)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult$lzycompute(commands.scala:58)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.sideEffectResult(commands.scala:56)
at
org.apache.spark.sql.execution.command.ExecutedCommandExec.executeCollect(commands.scala:67)
at org.apache.spark.sql.Dataset.<init>(Dataset.scala:183)
at
org.apache.spark.sql.CarbonSession$$anonfun$sql$1.apply(CarbonSession.scala:108)
at
org.apache.spark.sql.CarbonSession$$anonfun$sql$1.apply(CarbonSession.scala:97)
at org.apache.spark.sql.CarbonSession.withProfiler(CarbonSession.scala:155)
at org.apache.spark.sql.CarbonSession.sql(CarbonSession.scala:95)
... 48 elided
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