Suraj Nayak created SQOOP-3138:
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Summary: Netezza Direct Import does not support --columns options
Key: SQOOP-3138
URL: https://issues.apache.org/jira/browse/SQOOP-3138
Project: Sqoop
Issue Type: Bug
Components: connectors
Affects Versions: 1.4.6
Reporter: Suraj Nayak
Priority: Minor
Netezza Direct import Mapper is not sensitive to --columns. The parameters
passed to --columns C1,C2,C3,C4 are ignored by
{{NetezzaExternalTableImportMapper}}.
(NetezzaExternalTableImportMapper)[https://github.com/apache/sqoop/blob/trunk/src/java/org/apache/sqoop/mapreduce/db/netezza/NetezzaExternalTableImportMapper.java#L83]
on line 83 is based of (output field
names)[https://github.com/apache/sqoop/blob/trunk/src/java/org/apache/sqoop/mapreduce/db/DBConfiguration.java#L420]
instead of input field names.
Even when -D mapreduce.jdbc.output.field.names=C1,C2,C3,C4 is set, another bug
in (NetezzaExternalTableImportMapper @ line 128 )
[https://github.com/apache/sqoop/blob/trunk/src/java/org/apache/sqoop/mapreduce/db/netezza/NetezzaExternalTableImportMapper.java#L128]
duplicates the first column. This is due to the for loop initialization bug
where variable {{i}} should be initialized to {{1}} instead of {{0}}.
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