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https://issues.apache.org/jira/browse/PHOENIX-1609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14323583#comment-14323583
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James Taylor commented on PHOENIX-1609:
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[~gabriel.reid] - any thoughts here? Does it make sense to potentially invoke a
MR job when a CREATE INDEX statement is executed? What's the best way to
execute a MR job from java code?
[~lhofhansl] - will it be better to build HFiles and hand them off to HBase if
the row keys will be across potentially many regions? Or would it be better to
come in through the regular client APIs?
> MR job to populate index tables
> --------------------------------
>
> Key: PHOENIX-1609
> URL: https://issues.apache.org/jira/browse/PHOENIX-1609
> Project: Phoenix
> Issue Type: New Feature
> Reporter: maghamravikiran
> Assignee: maghamravikiran
> Attachments: 0001-PHOENIX_1609.patch
>
>
> Often, we need to create new indexes on master tables way after the data
> exists on the master tables. It would be good to have a simple MR job given
> by the phoenix code that users can call to have indexes in sync with the
> master table.
> Users can invoke the MR job using the following command
> hadoop jar org.apache.phoenix.mapreduce.Index -st MASTER_TABLE -tt
> INDEX_TABLE -columns a,b,c
> Is this ideal?
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