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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXMALHAR-2514) JDBCPollInputOperator support for offset rebase
Date Tue, 29 Aug 2017 05:34:00 GMT

    [ https://issues.apache.org/jira/browse/APEXMALHAR-2514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16144765#comment-16144765
] 

ASF GitHub Bot commented on APEXMALHAR-2514:
--------------------------------------------

tweise closed pull request #652: APEXMALHAR-2514 JDBC poll offset rebase support.
URL: https://github.com/apache/apex-malhar/pull/652
 
 
   
 
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> JDBCPollInputOperator support for offset rebase
> -----------------------------------------------
>
>                 Key: APEXMALHAR-2514
>                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2514
>             Project: Apache Apex Malhar
>          Issue Type: Improvement
>            Reporter: Thomas Weise
>            Assignee: Thomas Weise
>
> Operator currently cannot handle tables where old data is periodically removed, because
the poll logic assumes a fixed start offset. Instead, it should support offset rebase with
a trailing lower bound key.
> Such use of the WHERE clause will also avoid repeated full index scanning and be especially
efficient when the source is partitioned on the key column.
> https://lists.apache.org/thread.html/50ae7799199ab8b9e38b7947dbcfd466b60df0bbfea6aa19abfd0b33@%3Cusers.apex.apache.org%3E



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