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https://issues.apache.org/jira/browse/HBASE-8065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15508710#comment-15508710
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Rakesh Saini commented on HBASE-8065:
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The lock free on callback mechanism will assure the removal of old data with
every successful bulk load operation.It also take care of data contention
problem raised during read operation.
> bulkload can load the hfile into hbase table,but this mechanism can't remove
> prior data
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-8065
> URL: https://issues.apache.org/jira/browse/HBASE-8065
> Project: HBase
> Issue Type: Improvement
> Components: IPC/RPC, mapreduce, regionserver
> Affects Versions: 0.94.0
> Environment: hadoop-1.0.2、hbase-0.94.0
> Reporter: Yuan Kang
> Assignee: Yuan Kang
> Priority: Critical
> Attachments: LoadIncrementalHFiles-bulkload-can-clean-olddata.patch
>
>
> this patch can do bulkload for one more parameter ‘need to refresh’,when this
> parameter is true.bulkload can clean the old date in the hbase table ,then do
> the new date load
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