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https://issues.apache.org/jira/browse/HBASE-7857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13579539#comment-13579539
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stack commented on HBASE-7857:
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[~ted_yu] Please resolve this issue as invalid until you come up w/ better
notion of what a subregion is in the first place, what its scope is in the
second place, and then once this is done, then you could have an issue on their
'management'.
You do not answer my questions. Instead you provoke more... this issue is for
discussing what subregions are? Instead you quote others from another issue on
compaction stripes (I click through to discussion that makes allusion but the
notion is fuzzy at best and an analogy at its most hard -- the jimmy quote).
You end that this issue is about discussing whether or not subregions make
sense when you start w/ adding them to the UI and their management.
This issue does not help. It confuses. Please clean it up or close.
> Sub-region management
> ---------------------
>
> Key: HBASE-7857
> URL: https://issues.apache.org/jira/browse/HBASE-7857
> Project: HBase
> Issue Type: New Feature
> Reporter: Ted Yu
>
> Sub-region provides a light weight management below region level.
> Matt Corgan has a nice summary of the relationship between region size and
> number of regions on region server:
> https://issues.apache.org/jira/browse/HBASE-7667?focusedCommentId=13575024&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13575024
> HBASE-7667 proposed stripe compaction. However, to fully achieve fine-grained
> management, more components should participate:
> * memstore flush should ideally have knowledge about what makes stripe
> compaction work efficiently
> * we need to figure out where to store sub-region boundary information so
> that components have easy access. Boundary information should sustain after
> region moves from one server to another.
> Since HBASE-7667 focuses on compaction aspect, this JIRA discusses sub-region
> management in other components so that we better understand the benefits and
> complexities.
> User may want to see how sub-regions are shaped on web UI.
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