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From "Suraj Nayak (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SQOOP-3138) Netezza Direct Import does not support --columns options
Date Tue, 21 Feb 2017 00:42:44 GMT
Suraj Nayak created SQOOP-3138:

             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}}. 

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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