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https://issues.apache.org/jira/browse/SQOOP-3267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278220#comment-16278220
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Boglarka Egyed commented on SQOOP-3267:
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Hi [~dvoros],
Thanks for reporting this issue!
Currently we use [Apache's Review Board|https://reviews.apache.org/r/59833/]
for reviewing patches so please open a Review Request.
Please consider the followings on Review Board:
* Project: Sqoop
* Summary: generate your summary using the issue's JIRA key + JIRA title
* Groups: add the relevant group so everyone on the project will know about
your patch (sqoop)
* Bugs: add the issue's JIRA key so it's easy to navigate to the JIRA side
* Repository: sqoop-trunk for Sqoop1 (or sqoop-sqoop2 for Sqoop2)
Please add the link of the review as an external/web link.
If you would like to assign this ticket to yourself please let me know and I'll
add you to the Contributors list.
Thank you,
Bogi
> Incremental import to HBase deletes only last version of column
> ---------------------------------------------------------------
>
> Key: SQOOP-3267
> URL: https://issues.apache.org/jira/browse/SQOOP-3267
> Project: Sqoop
> Issue Type: Bug
> Components: hbase-integration
> Affects Versions: 1.4.7
> Reporter: Daniel Voros
> Attachments: SQOOP-3267.1.patch
>
>
> Deletes are supported since SQOOP-3149, but we're only deleting the last
> version of a column when the corresponding cell was set to NULL in the source
> table.
> This can lead to unexpected and misleading results if the row has been
> transferred multiple times, which can easily happen if it's being modified on
> the source side.
> Also SQOOP-3149 is using a new Put command for every column instead of a
> single Put per row as before. This could probably lead to a performance drop
> for wide tables (for which HBase is otherwise usually recommended).
> [~jilani], [~anna.szonyi] could you please comment on what you think would be
> the expected behavior here?
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