[jira] [Commented] (SQOOP-1588) Sqoop2: TO-side: Write data to HDFS

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SQOOP-1588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14215758#comment-14215758 ] 

ASF subversion and git services commented on SQOOP-1588:
--------------------------------------------------------

Commit 59ffd880258e63775d58905e6059da1c4287aa44 in sqoop's branch refs/heads/sqoop2 from [~abec]
[ https://git-wip-us.apache.org/repos/asf?p=sqoop.git;h=59ffd88 ]

SQOOP-1588: Sqoop2: TO-side: Write data to HDFS

(Qian Xu via Abraham Elmahrek)


> Sqoop2: TO-side: Write data to HDFS
> -----------------------------------
>
>                 Key: SQOOP-1588
>                 URL: https://issues.apache.org/jira/browse/SQOOP-1588
>             Project: Sqoop
>          Issue Type: Sub-task
>          Components: connectors
>            Reporter: Qian Xu
>            Assignee: Qian Xu
>             Fix For: 1.99.5
>
>         Attachments: SQOOP-1588.5.patch
>
>
> Create a basic Kite connector that can write data (i.e. from a jdbc connection) to HDFS. 
> The scope is defined as follows:
> - Destination: HDFS
> - File Format: Avro Parquet and CSV.
> - Compression Codec: Use default
> - Partitioner Strategy: Not supported
> - Column Mapping: Not supported
> Exposed Configuration:
> - [Link] File Format (Enum)
> - [To] Dataset URI (String, has a validation check) 
> Workflow:
> - Create a link to Kite Connector
> - Create a job with valid configuration (see above)
> - Start a job {{KiteToInitializer}} will check dataset existence 
> - Sqoop will create N {{KiteLoader}} instances.
> - Kite requires an Avro schema for data manipulation, {{KiteLoader}} will create an Avro schema from Sqoop schema provided by {{LoaderContext}}. As Sqoop schema types are not identical to Avro types, some types will be mapped. The original Sqoop type information will be kept as {{SqoopType}} in schema field, which can be used for a reversed type mapping.
> - {{KiteLoader}} will create a temporary dataset and writes data records into it. If any error occurs, the dataset will be deleted.
> - {{KiteToDestroy}} will merge all temporary datasets as one dataset.
> Further features will be implemented in follow-up JIRAs.



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