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From "Nick Dimiduk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13159) Consider RangeReferenceFiles with transformations
Date Fri, 06 Mar 2015 02:00:43 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14349785#comment-14349785

Nick Dimiduk commented on HBASE-13159:

Pretty cool idea. Would also allow us to have some efficient implementation of non-materialized

> Consider RangeReferenceFiles with transformations
> -------------------------------------------------
>                 Key: HBASE-13159
>                 URL: https://issues.apache.org/jira/browse/HBASE-13159
>             Project: HBase
>          Issue Type: Brainstorming
>            Reporter: Lars Hofhansl
> Currently we have References used by HalfStoreReaders and HFileLinks.
> For various use cases we have here we have need for a RangeReferences with simple transformation
of the keys.
> That would allow us to map HFiles between regions or even tables without copying any
> We can probably combine HalfStores, HFileLinks, and RangeReferences into a single concept:
> * RangeReference = arbitrary start and stop row, arbitrary key transformation
> * HFileLink = start and stop keys set to the linked file's start/stop key, transformation
= identity
> * (HalfStore) References = start/stop key set according to top or bottom reference, transformation
= identity
> Note this is a *brainstorming* issue. :)
> (Could start with just references with arbitrary start/stop keys, and do transformations

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