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https://issues.apache.org/jira/browse/PHOENIX-2967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15317174#comment-15317174
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Sergey Soldatov commented on PHOENIX-2967:
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[~jamestaylor] Originally I used it just to separate cf name and column name.
Since it may come that we have AB.C and AB.C. Now, to avoid a special handling
for empty kvs that we add for each row (so they do not have any corresponding
columns in PTable) I mapped them manually in the same way (empty CF name +
separator + empty column name). Sure, I can add a constant for the separator.
> CSV BulkLoad should properly handle empty family for logical tables.
> --------------------------------------------------------------------
>
> Key: PHOENIX-2967
> URL: https://issues.apache.org/jira/browse/PHOENIX-2967
> Project: Phoenix
> Issue Type: Bug
> Reporter: Sergey Soldatov
> Assignee: Sergey Soldatov
> Attachments: PHOENIX-2967-1.patch
>
>
> Current code handle 1 empty CF name per physical table, which is wrong with
> new implementation of local indexes. Since TableRowKey has no information
> about the logical table, we need add column index for empty cf names instead
> of using -1.
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