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From "Daniel Voros (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SQOOP-3336) Splitting on integer column can create more splits than necessary
Date Thu, 21 Jun 2018 21:47:00 GMT
Daniel Voros created SQOOP-3336:
-----------------------------------

             Summary: Splitting on integer column can create more splits than necessary
                 Key: SQOOP-3336
                 URL: https://issues.apache.org/jira/browse/SQOOP-3336
             Project: Sqoop
          Issue Type: Bug
    Affects Versions: 1.4.7
            Reporter: Daniel Voros
            Assignee: Daniel Voros
             Fix For: 1.5.0, 3.0.0


Running an import with {{-m 2}} will result in three splits if there are only three consecutive
integers in the table ({{\{1, 2, 3\}}}).

Work is (probably) spread more evenly between mappers this way, but ending up with more files
than expected could be an issue.

Split-limit can also result in more values than asked for in the last chunk (due to the closed
interval in the end).



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