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Posted to dev@sqoop.apache.org by "Jarek Jarcec Cecho (JIRA)" <ji...@apache.org> on 2013/06/15 01:06:21 UTC
[jira] [Commented] (SQOOP-1078) incremental import from database in
direct mode
[ https://issues.apache.org/jira/browse/SQOOP-1078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13683897#comment-13683897 ]
Jarek Jarcec Cecho commented on SQOOP-1078:
-------------------------------------------
Thank you [~thowe_ta]! The patch is great, would you mind uploading it to [review board|https://reviews.apache.org/dashboard/] and rebasing on current trunk? I'll be more than happy to review and commit it.
> incremental import from database in direct mode
> -----------------------------------------------
>
> Key: SQOOP-1078
> URL: https://issues.apache.org/jira/browse/SQOOP-1078
> Project: Sqoop
> Issue Type: Bug
> Components: connectors, connectors/mysql, connectors/postgresql
> Affects Versions: 1.3.0, 1.4.2, 1.4.3
> Reporter: Tim Howe
> Priority: Minor
> Labels: patch
> Fix For: 1.3.0
>
> Attachments: sqoop-incremental-direct.patch
>
>
> A problem exists in Sqoop's incremental import, namely that any imports
> after the first report success but the data never appears.
> A temporary file created on HDFS with the data but is deleted upon
> completion rather than being moved into place.
> It turns out to be a conflict between the "direct mode" database
> managers and "incremental mode" import. Ordinarily Sqoop ends up
> creating files named part-m-nnnnn where nnnnn is an incrementing file
> partition number. However the direct mode importer creates files of
> the form data-nnnnn. This poses a problem because AppendUtils, which
> is used to move files into place at the end of a direct import, only
> copies files which match that part-m-nnnnn format and discards the
> rest.
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