[jira] [Updated] (SQOOP-3267) Incremental import to HBase deletes only last version of column

["Daniel Voros (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SQOOP-3267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Voros updated SQOOP-3267:
--------------------------------
    Attachment: SQOOP-3267.1.patch

Attaching patch #1. This uses {{Delete#deleteColumns()}} instead of {{Delete#deleteColumn()}} to delete all revisions of a column and uses a single Put per row.

> 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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