[jira] [Commented] (HBASE-13985) Add configuration to skip validating HFile format when bulk loading millions of HFiles

["Andrew Purtell (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-13985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14694527#comment-14694527 ] 

Andrew Purtell commented on HBASE-13985:
----------------------------------------

Ok, committing shortly


> Add configuration to skip validating HFile format when bulk loading millions of HFiles
> --------------------------------------------------------------------------------------
>
>                 Key: HBASE-13985
>                 URL: https://issues.apache.org/jira/browse/HBASE-13985
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.98.13
>            Reporter: Victor Xu
>            Assignee: Victor Xu
>            Priority: Minor
>              Labels: regionserver
>             Fix For: 0.98.14
>
>         Attachments: HBASE-13985-v2.patch, HBASE-13985-v3.patch, HBASE-13985.patch
>
>
> When bulk loading millions of HFile into one HTable, checking HFile format is the most time-consuming phase. Maybe we could use a parallel mechanism to increase the speed, but when it comes to millions of HFiles, it may still cost dozens of minutes. So I think it's necessary to add an option for advanced user to bulkload without checking HFile format at all. 
> Of course, the default value of this option should be true.



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