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https://issues.apache.org/jira/browse/BEAM-2955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16165347#comment-16165347
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Chamikara Jayalath commented on BEAM-2955:
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I like approach (1) as well since seems like it'll minimize code duplication. 
Are there any drawbacks (features, performance) of approach (1) compared to 
approach (2) ?

Assigning this JIRA to you.

Also ccing some folks interested in I/O.
[~reuvenlax] [~jkff] [~jbonofre]

> Create a Cloud Bigtable HBase connector
> ---------------------------------------
>
>                 Key: BEAM-2955
>                 URL: https://issues.apache.org/jira/browse/BEAM-2955
>             Project: Beam
>          Issue Type: New Feature
>          Components: sdk-java-gcp
>            Reporter: Solomon Duskis
>            Assignee: Chamikara Jayalath
>
> The Cloud Bigtable (CBT) team has had a Dataflow connector maintained in a 
> different repo for awhile. Recently, we did some reworking of the Cloud 
> Bigtable client that would allow it to better coexist in the Beam ecosystem, 
> and we also released a Beam connector in our repository that exposes HBase 
> idioms rather than the Protobuf idioms of BigtableIO.  More information about 
> the customer experience of the HBase connector can be found here: 
> [https://cloud.google.com/bigtable/docs/dataflow-hbase].
> The Beam repo is a much better place to house a Cloud Bigtable HBase 
> connector.  There are a couple of ways we can implement this new connector:
> # The CBT connector depends on artifacts in the io/hbase maven project.  We 
> can create a new extend HBaseIO for the purposes of CBT.  We would have to 
> add some features to HBaseIO to make that work (dynamic rebalancing, and a 
> way for HBase and CBT's size estimation models to coexist)
> # The BigtableIO connector works well, and we can add an adapter layer on top 
> of it.  I have a proof of concept of it here: 
> [https://github.com/sduskis/cloud-bigtable-client/tree/add_beam/bigtable-dataflow-parent/bigtable-hbase-beam].
> # We can build a separate CBT HBase connector.
> I'm happy to do the work.  I would appreciate some guidance and discussion 
> about the right approach.



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