Review Request: SQOOP-879 Sqoop2: NPE when deleting job object that do not have associated any submissions

[Jarek Cecho]

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https://reviews.apache.org/r/9390/
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Review request for Sqoop.


Description
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I've added explicit null check.


This addresses bug SQOOP-879.
    https://issues.apache.org/jira/browse/SQOOP-879


Diffs
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repository/repository-derby/src/main/java/org/apache/sqoop/repository/derby/DerbyRepositoryHandler.java
 5e24ae3e7fd431857faa77b8f556cf8db836d708 

Diff: https://reviews.apache.org/r/9390/diff/


Testing
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Thanks,

Jarek Cecho