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From "Liang Chen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CARBONDATA-307) Support executor side scan using CarbonInputFormat
Date Fri, 20 Jan 2017 04:10:26 GMT

     [ https://issues.apache.org/jira/browse/CARBONDATA-307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Liang Chen updated CARBONDATA-307:
----------------------------------
    Fix Version/s:     (was: 1.0.0-incubating)
                   1.1.0-incubating

> Support executor side scan using CarbonInputFormat
> --------------------------------------------------
>
>                 Key: CARBONDATA-307
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-307
>             Project: CarbonData
>          Issue Type: Improvement
>          Components: spark-integration
>    Affects Versions: 0.1.0-incubating
>            Reporter: Jacky Li
>             Fix For: 1.1.0-incubating
>
>
> Currently, there are two read path in carbon-spark module: 
> 1. CarbonContext => CarbonDatasourceRelation => CarbonScanRDD => QueryExecutor
> In this case, CarbonScanRDD uses CarbonInputFormat to get the split, and use QueryExecutor
for scan.
> 2. SqlContext => CarbonDatasourceHadoopRelation => CarbonHadoopFSRDD => CarbonInputFormat(CarbonRecordReader)
=> QueryExecutor
> In this case, CarbonHadoopFSRDD uses CarbonInputFormat to do both get split and scan
> Because of this, there are unnecessary duplicate code, they need to be unified.
> The target approach should be:
> sqlContext/carbonContext => CarbonDatasourceHadoopRelation => CarbonScanRDD =>
 CarbonInputFormat(CarbonRecordReader) => QueryExecutor



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