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https://issues.apache.org/jira/browse/CARBONDATA-2951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
xubo245 updated CARBONDATA-2951:
--------------------------------
Description:
For the some user of using C++ code in their project, they can't call
CarbonData interface and integrate CarbonData into their C++ project. So we
plan to provide C++ interface for C++ user to integrate carbon, including read
and write CarbonData. It's will more convenient for they.
We plan to design and develop as following:
1. Provide CarbonReader for SDK, it can read carbon data in C++ language
##features/interfaces
1.1. create CarbonReader
1.2. hasNext()
1.3. readNextRow()
1.4. close()
1.5. support OBS(AK/SK/Endpoint)
1.6 support batch read(withBatch,readNextBatchRow)
1.7 support vecor read(default) and carbonrecordreader
（withRowRecordReader）
1.8 projection
##support data types:
String,
Long,Varchar(string),Short,Int,Date(int),timestamp(long),boolean,Decimal(string),Float
Array<String> in carbonrecordreader, not support in vectorreader
byte=>support in java RowUtil, not in C++ carbon reader
## Schema and data
Create table tbl_email_form_to_for_XX(
Event_Time Timestamp,
Ingestion_Time Timestamp,
From_Email String,
To_Email String,
From_To_type String,
Event_ID String
) using carbon options(path ‘obs://X/tbl_email_form_to_for_XX’)
ETL 6 columns from 18 columns table
example data:
from_email_36550_phillip.al...@enron.com
to_email_36550_stagecoachm...@hotmail.com from_to
<29528303.1075855666657.JavaMail.evans@thyme> 1538015497000000
9755149200000
2. the performance should be reach X millions records/s/node
3.Provide CarbonWriter for SDK, it can write carbon data in C++ language
##features/interfaces
3.1. create CarbonWriter, including create schema(withCsvInput),set
outputPath, and build,
3.2. write()
3.3. close()
3.4. support OBS(AK/SK/Endpoint)(withHadoopConf)
3.5. writtenBy
3.6. support withTableProperty, withLoadOption,taskNo,
uniqueIdentifier, withThreadSafe, withBlockSize, withBlockletSize,
localDictionaryThreshold, enableLocalDictionary in C++ SDK (PR2899 TO BE review)
##Data types:
Carbon need support base data types, including string, float,
double, int, long, date, timestamp, bool, array<String>.
For other, we can convert:
char array => carbon string
Enum => Carbon string
set and list => carbon array<String>
##performance
Writing Performance is not required now
4. read schema function
readSchema
getVersionDetails =>TODO
5. support carbonproperties
5.1 addProperty
5.2 getProperty
6.TODO:
6.1.getVersionDetails
6.2.updated SDK/CSDK reader doc
6.3.support byte(write read)
6.4.support long string columns
6.5.support sortBy
6.6.support withCsvInput(Schema schema); create schema(JAVA)
6.7. optimize the write doc
/**
* Create a {@link CarbonWriterBuilder} to build a
{@link CarbonWriter}
*/
public static CarbonWriterBuilder builder() {
return new CarbonWriterBuilder();
}
was:
CSDK: Provide C++ interface for SDK
1. Provide CarbonReader for SDK, it can read carbon data in C++ language
##features/interfaces
# 1.1. create CarbonReader
# 1.2. hasNext()
# 1.3. readNextRow()
# 1.4. close()
# 1.5. support OBS(AK/SK/Endpoint)
# 1.6 support batch read(withBatch,readNextBatchRow)
# 1.7 support vecor read(default) and carbonrecordreader
（withRowRecordReader）
# 1.8 projection
##support data types:
String,
Long,Varchar(string),Short,Int,Date(int),timestamp(long),boolean,Decimal(string),Float
Array<String> in carbonrecordreader, not support in vectorreader
byte=>support in java RowUtil, not in C++ carbon reader
## Schema and data
Create table tbl_email_form_to_for_XX(
Event_Time Timestamp,
Ingestion_Time Timestamp,
From_Email String,
To_Email String,
From_To_type String,
Event_ID String
) using carbon options(path ‘obs://X/tbl_email_form_to_for_XX’)
ETL 6 columns from 18 columns table
example data:
from_email_36550_phillip.al...@enron.com
to_email_36550_stagecoachm...@hotmail.com from_to
<29528303.1075855666657.JavaMail.evans@thyme> 1538015497000000
9755149200000
2. the performance should be reach X millions records/s/node
3.Provide CarbonWriter for SDK, it can write carbon data in C++ language
##features/interfaces
3.1. create CarbonWriter, including create schema(withCsvInput),set
outputPath, and build,
3.2. write()
3.3. close()
3.4. support OBS(AK/SK/Endpoint)(withHadoopConf)
3.5. writtenBy
3.6. support withTableProperty, withLoadOption,taskNo,
uniqueIdentifier, withThreadSafe, withBlockSize, withBlockletSize,
localDictionaryThreshold, enableLocalDictionary in C++ SDK (PR2899 TO BE review)
##Data types:
Carbon need support base data types, including string, float,
double, int, long, date, timestamp, bool, array<String>.
For other, we can convert:
char array => carbon string
Enum => Carbon string
set and list => carbon array<String>
##performance
Writing Performance is not required now
4. read schema function
readSchema
getVersionDetails =>TODO
5. support carbonproperties
5.1 addProperty
5.2 getProperty
6.TODO:
6.1.getVersionDetails
6.2.updated SDK/CSDK reader doc
6.3.support byte(write read)
6.4.support long string columns
6.5.support sortBy
6.6.support withCsvInput(Schema schema); create schema(JAVA)
6.7. optimize the write doc
/**
* Create a {@link CarbonWriterBuilder} to build a
{@link CarbonWriter}
*/
public static CarbonWriterBuilder builder() {
return new CarbonWriterBuilder();
}
> CSDK: Provide C++ interface for SDK
> -----------------------------------
>
> Key: CARBONDATA-2951
> URL: https://issues.apache.org/jira/browse/CARBONDATA-2951
> Project: CarbonData
> Issue Type: Task
> Components: other
> Affects Versions: 1.5.0
> Reporter: xubo245
> Assignee: xubo245
> Priority: Critical
> Fix For: NONE
>
>
> For the some user of using C++ code in their project, they can't call
> CarbonData interface and integrate CarbonData into their C++ project. So we
> plan to provide C++ interface for C++ user to integrate carbon, including
> read and write CarbonData. It's will more convenient for they.
> We plan to design and develop as following:
> 1. Provide CarbonReader for SDK, it can read carbon data in C++ language
> ##features/interfaces
> 1.1. create CarbonReader
> 1.2. hasNext()
> 1.3. readNextRow()
> 1.4. close()
> 1.5. support OBS(AK/SK/Endpoint)
> 1.6 support batch read(withBatch,readNextBatchRow)
> 1.7 support vecor read(default) and carbonrecordreader
> （withRowRecordReader）
> 1.8 projection
>
> ##support data types:
> String,
> Long,Varchar(string),Short,Int,Date(int),timestamp(long),boolean,Decimal(string),Float
> Array<String> in carbonrecordreader, not support in vectorreader
> byte=>support in java RowUtil, not in C++ carbon reader
>
> ## Schema and data
> Create table tbl_email_form_to_for_XX(
> Event_Time Timestamp,
> Ingestion_Time Timestamp,
> From_Email String,
> To_Email String,
> From_To_type String,
> Event_ID String
> ) using carbon options(path ‘obs://X/tbl_email_form_to_for_XX’)
> ETL 6 columns from 18 columns table
>
> example data:
> from_email_36550_phillip.al...@enron.com
> to_email_36550_stagecoachm...@hotmail.com from_to
> <29528303.1075855666657.JavaMail.evans@thyme> 1538015497000000
> 9755149200000
> 2. the performance should be reach X millions records/s/node
> 3.Provide CarbonWriter for SDK, it can write carbon data in C++ language
> ##features/interfaces
> 3.1. create CarbonWriter, including create schema(withCsvInput),set
> outputPath, and build,
> 3.2. write()
> 3.3. close()
> 3.4. support OBS(AK/SK/Endpoint)(withHadoopConf)
> 3.5. writtenBy
> 3.6. support withTableProperty, withLoadOption,taskNo,
> uniqueIdentifier, withThreadSafe, withBlockSize, withBlockletSize,
> localDictionaryThreshold, enableLocalDictionary in C++ SDK (PR2899 TO BE
> review)
>
> ##Data types:
> Carbon need support base data types, including string, float,
> double, int, long, date, timestamp, bool, array<String>.
> For other, we can convert:
> char array => carbon string
> Enum => Carbon string
> set and list => carbon array<String>
> ##performance
> Writing Performance is not required now
>
> 4. read schema function
> readSchema
> getVersionDetails =>TODO
> 5. support carbonproperties
> 5.1 addProperty
> 5.2 getProperty
>
> 6.TODO:
> 6.1.getVersionDetails
> 6.2.updated SDK/CSDK reader doc
> 6.3.support byte(write read)
> 6.4.support long string columns
> 6.5.support sortBy
> 6.6.support withCsvInput(Schema schema); create schema(JAVA)
> 6.7. optimize the write doc
> /**
> * Create a {@link CarbonWriterBuilder} to build a
> {@link CarbonWriter}
> */
> public static CarbonWriterBuilder builder() {
> return new CarbonWriterBuilder();
> }
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