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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8034) record on-disk data size for store file and make it available during writing
Date Fri, 15 Mar 2013 21:26:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13603874#comment-13603874
] 

Matteo Bertozzi commented on HBASE-8034:
----------------------------------------

{quote}Can you please point me at what headers are written before data?{quote}
HFileBlock.Writer.finishBlock() and finishBlockAndWriteHeaderAndData()

{quote}...that means KVs will have to be used for detecting imbalance for fixed-count scheme
(size and KV balance may be different)/splitting out new stripe for sequential data/etc. Do
you think it's acceptable?{quote}
yeah, splitting and some other sort of tuning can be the first use case
                
> record on-disk data size for store file and make it available during writing
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-8034
>                 URL: https://issues.apache.org/jira/browse/HBASE-8034
>             Project: HBase
>          Issue Type: Task
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>            Priority: Minor
>         Attachments: HBASE-8034-v0.patch, HBASE-8034-v1.patch, HBASE-8034-v2.patch
>
>
> To better estimate the size of data in the file, and to be able to split files intelligently
during any multi-file compactor like stripe or level.

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