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Posted to issues@beam.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/03/15 13:51:00 UTC
[jira] [Work logged] (BEAM-6820) Custom Row-Object mapper
implementation for CassandraIO
[ https://issues.apache.org/jira/browse/BEAM-6820?focusedWorklogId=213779&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-213779 ]
ASF GitHub Bot logged work on BEAM-6820:
----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Mar/19 13:50
Start Date: 15/Mar/19 13:50
Worklog Time Spent: 10m
Work Description: goldfishy commented on pull request #8069: [BEAM-6820] Cassandra object mapper abstraction
URL: https://github.com/apache/beam/pull/8069
The current Cassandra source sink is tightly coupled to the Datastax Object Mapper. [This requires users](https://docs.datastax.com/en/developer/java-driver/3.1/manual/object_mapper/) of the sink to provide a POJO describing the table in Cassandra. Although the POJO is a easy and powerful way to describe the table it does requires users to always recompile the pipeline for each change in the table definition.
I suggest adding a abstraction layer that allows users to inject their own mapper implementation. One example use would be a mapper that works with a generic [Row](https://beam.apache.org/releases/javadoc/2.4.0/org/apache/beam/sdk/values/Row.html) implementation rather than a compile-time POJO.
This abstraction layer could be implemented by simply supplying a MapperFactory through the Sink/Source builder.
------------------------
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Issue Time Tracking
-------------------
Worklog Id: (was: 213779)
Time Spent: 10m
Remaining Estimate: 0h
> Custom Row-Object mapper implementation for CassandraIO
> -------------------------------------------------------
>
> Key: BEAM-6820
> URL: https://issues.apache.org/jira/browse/BEAM-6820
> Project: Beam
> Issue Type: Improvement
> Components: io-java-cassandra
> Reporter: Max Charas
> Assignee: Max Charas
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The current Cassandra source sink is tightly coupled to the Datastax Object Mapper. [This requires users|https://docs.datastax.com/en/developer/java-driver/3.1/manual/object_mapper/] of the sink to provide a POJO describing the table in Cassandra. Although the POJO is a easy and powerful way to describe the table it does requires users to always recompile the pipeline for each change in the table definition.
> I suggest adding a abstraction layer that allows users to inject their own mapper implementation. One example use would be a mapper that works with a generic [Row|https://beam.apache.org/releases/javadoc/2.4.0/org/apache/beam/sdk/values/Row.html] implementation rather than a compile-time POJO.
> This abstraction layer could be implemented by simply supplying a MapperFactory through the Sink/Source builder.
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