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https://issues.apache.org/jira/browse/ACCUMULO-956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13552991#comment-13552991
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Keith Turner commented on ACCUMULO-956:
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It may be necessary to filter based on column family.
For example, if colfam C can be transformed to col fam A or B (depending on
other parts of the key). If a seek came in for col fam A, then the soruce
would be seeked for colfam C. However this could result in transformations to
col fam B, which we would want to suppress.
> Iterator to transform key parts
> -------------------------------
>
> Key: ACCUMULO-956
> URL: https://issues.apache.org/jira/browse/ACCUMULO-956
> Project: Accumulo
> Issue Type: Improvement
> Reporter: Brian Loss
> Fix For: 1.5.0
>
> Attachments: key_transforming_iterator-1.patch,
> key_transforming_iterator-2.patch, key_transforming_iterator.patch
>
>
> Iterators that transform parts of the key can be tricky if any transformation
> affects sort ordering. Implement an iterator that takes care of the tricky
> details that come with modifying sort order (e.g., handling scan-time
> iterator reconstruction and the associated seek).
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