[
https://issues.apache.org/jira/browse/MAPREDUCE-875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12747263#action_12747263
]
Enis Soztutar commented on MAPREDUCE-875:
-----------------------------------------
+1
> Make DBRecordReader execute queries lazily
> ------------------------------------------
>
> Key: MAPREDUCE-875
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-875
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Aaron Kimball
> Assignee: Aaron Kimball
> Attachments: MAPREDUCE-875.2.patch, MAPREDUCE-875.patch
>
>
> DBInputFormat's DBRecordReader executes the user's SQL query in the
> constructor. If the query is long-running, this can cause task timeout. The
> user is unable to spawn a background thread (e.g., in a MapRunnable) to
> inform Hadoop of on-going progress.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
