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https://issues.apache.org/jira/browse/MAPREDUCE-3830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13219224#comment-13219224
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Bhallamudi Venkata Siva Kamesh commented on MAPREDUCE-3830:
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User has not been control to provide insert query. It has been framed inside
the code, using given *table name* and *fields*. I think there should be an
option as a configuration property, which accepts insert query from the user
side.
One advantage of having this one is, some DBs support insertion/updation using
a single query.
For example, MySQL supports insertion/updation operation using a single query
(insert ignore).
Or handling this inside code?
Any Comments?
> DBOutputFormat can't support the update operation to DB
> -------------------------------------------------------
>
> Key: MAPREDUCE-3830
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3830
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 0.20.203.0
> Reporter: xsuyu
> Fix For: 0.20.203.0
>
>
> After checking the DBOutputFormat class file and found it can't support the
> update operation to DB,
> It only support the insert operation.
> why it can't provide the update operation? Is it an improvement action?
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