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https://issues.apache.org/jira/browse/HBASE-48?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743333#action_12743333
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stack commented on HBASE-48:
----------------------------
Two things.
1. Manish Shah points out that we need to ensure a total ordering of all keys
(See pg.218 of hadoop book and on). We need to supply a partitioner that does
total ordering AND that ensures we don't partition across rows (Thanks for this
Manish).
2. Current patch does not guarantee rows do not span storefiles.
> [hbase] Bulk load tools
> -----------------------
>
> Key: HBASE-48
> URL: https://issues.apache.org/jira/browse/HBASE-48
> Project: Hadoop HBase
> Issue Type: New Feature
> Reporter: stack
> Priority: Minor
> Attachments: 48-v2.patch, 48-v3.patch, 48-v4.patch, 48.patch,
> loadtable.rb
>
>
> Hbase needs tools to facilitate bulk upload and possibly dumping. Going via
> the current APIs, particularly if the dataset is large and cell content is
> small, uploads can take a long time even when using many concurrent clients.
> PNUTS folks talked of need for a different API to manage bulk upload/dump.
> Another notion would be to somehow have the bulk loader tools somehow write
> regions directly in hdfs.
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