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Posted to issues@hbase.apache.org by "binlijin (JIRA)" <ji...@apache.org> on 2012/11/26 05:52:58 UTC

[jira] [Created] (HBASE-7216) sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync

binlijin created HBASE-7216:
-------------------------------

             Summary: sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync
                 Key: HBASE-7216
                 URL: https://issues.apache.org/jira/browse/HBASE-7216
             Project: HBase
          Issue Type: Improvement
            Reporter: binlijin


Current when hlog rollWriter:
(1)createWriter will call ClientProtocol.create
(2)first hlog sync will trigger ClientProtocol.addBlock and establish write pipeline 
we can sync the outputstream to force trigger ClientProtocol.addBlock and establish write pipeline before the first hlog sync 

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[jira] [Updated] (HBASE-7216) sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync

Posted by "binlijin (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-7216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

binlijin updated HBASE-7216:
----------------------------

    Attachment: HBASE-7216.patch
    
> sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7216
>                 URL: https://issues.apache.org/jira/browse/HBASE-7216
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: binlijin
>         Attachments: HBASE-7216.patch
>
>
> Current when hlog rollWriter:
> (1)createWriter will call ClientProtocol.create
> (2)first hlog sync will trigger ClientProtocol.addBlock and establish write pipeline 
> we can sync the outputstream to force trigger ClientProtocol.addBlock and establish write pipeline before the first hlog sync 

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[jira] [Updated] (HBASE-7216) sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync

Posted by "binlijin (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-7216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

binlijin updated HBASE-7216:
----------------------------

    Attachment: HBASE-7216-94.patch
    
> sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7216
>                 URL: https://issues.apache.org/jira/browse/HBASE-7216
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: binlijin
>         Attachments: HBASE-7216-94.patch, HBASE-7216.patch
>
>
> Current when hlog rollWriter:
> (1)createWriter will call ClientProtocol.create
> (2)first hlog sync will trigger ClientProtocol.addBlock and establish write pipeline 
> we can sync the outputstream to force trigger ClientProtocol.addBlock and establish write pipeline before the first hlog sync 

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[jira] [Commented] (HBASE-7216) sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync

Posted by "Lars Hofhansl (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-7216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13503625#comment-13503625 ] 

Lars Hofhansl commented on HBASE-7216:
--------------------------------------

Reasoning sounds good to me.

Do you have some benchmark numbers by any chance [~aoxiang]?

                
> sync hlog writer just after create it, so trigger addBlock and establish write pipeline before the first hlog sync
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7216
>                 URL: https://issues.apache.org/jira/browse/HBASE-7216
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: binlijin
>         Attachments: HBASE-7216-94.patch, HBASE-7216.patch
>
>
> Current when hlog rollWriter:
> (1)createWriter will call ClientProtocol.create
> (2)first hlog sync will trigger ClientProtocol.addBlock and establish write pipeline 
> we can sync the outputstream to force trigger ClientProtocol.addBlock and establish write pipeline before the first hlog sync 

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