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https://issues.apache.org/jira/browse/HBASE-451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12570891#action_12570891
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Jim Kellerman commented on HBASE-451:
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I'd prefer that the HTableDescriptor be a file under /hbase-root/table-name.
Why? So that the HBase-fsck can get all the info it needs from the file system
if root or meta or the -TABLE- table were corrupted.
> Remove HTableDescriptor from HRegionInfo
> ----------------------------------------
>
> Key: HBASE-451
> URL: https://issues.apache.org/jira/browse/HBASE-451
> Project: Hadoop HBase
> Issue Type: Improvement
> Affects Versions: 0.2.0
> Reporter: Jim Kellerman
> Priority: Minor
>
> There is an HRegionInfo for every region in HBase. Currently HRegionInfo also
> contains the HTableDescriptor (the schema). That means we store the schema n
> times where n is the number of regions in the table.
> Additionally, for every region of the same table that the region server has
> open, there is a copy of the schema. Thus it is stored in memory once for
> each open region.
> If HRegionInfo merely contained the table name the HTableDescriptor could be
> stored in a separate file and easily found.
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