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From "Rakesh Saini (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8065) bulkload can load the hfile into hbase table,but this mechanism can't remove prior data
Date Wed, 21 Sep 2016 04:35:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15508710#comment-15508710
] 

Rakesh Saini commented on HBASE-8065:
-------------------------------------

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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