Daniel Voros created SQOOP-3267:
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Summary: 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
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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