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https://issues.apache.org/jira/browse/PHOENIX-2088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14610934#comment-14610934
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James Taylor commented on PHOENIX-2088:
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[~maghamravikiran] - best case we're trying to prevent the need to split and
recombine at all because it seems like it's *mostly* unnecessary. That way we
don't need any delimiter. Do you think you can take this JIRA?
> Prevent splitting and recombining select expressions for MR integration
> -----------------------------------------------------------------------
>
> Key: PHOENIX-2088
> URL: https://issues.apache.org/jira/browse/PHOENIX-2088
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: Thomas D'Silva
>
> We currently send in the select expressions for the MR integration with a
> delimiter separated string, split based on the delimiter, and then recombine
> again using a comma separator. This is problematic because the delimiter
> character may appear in a select expression, thus breaking this logic.
> Instead, we should use a comma as the delimiter and avoid splitting and
> recombining as it's not necessary in that case. Instead, the entire string
> can be used as-is in that case to form the select expressions.
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