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https://issues.apache.org/jira/browse/PHOENIX-2088?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14610928#comment-14610928
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Thomas D'Silva commented on PHOENIX-2088:
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[[email protected]]
If we have an index on an expression the index column name can contain
characters like '|' or ','.
This causes issues with the way we serialize columns
PhoenixConfigurationUtil.setUpsertColumnNames()
and ColumnInfoToStringEncoderDecoder .
One way to fix this is to use a delimiter that won't be used in an expression,
but this seems like it might break if we ever add a function/operator that uses
the delimiter.
Do you know if there is a better way to fix this?
> 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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