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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2010/11/01 22:02:26 UTC

[jira] Created: (HBASE-3186) Patch that disables pread

Patch that disables pread
-------------------------

                 Key: HBASE-3186
                 URL: https://issues.apache.org/jira/browse/HBASE-3186
             Project: HBase
          Issue Type: Task
            Reporter: stack


Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Commented: (HBASE-3186) Patch that disables pread

Posted by "stack (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927226#action_12927226 ] 

stack commented on HBASE-3186:
------------------------------

Not sure.  Daniel over at Mozilla is going to try it out.  Will let you know.

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Commented: (HBASE-3186) Patch that disables pread

Posted by "ryan rawson (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927156#action_12927156 ] 

ryan rawson commented on HBASE-3186:
------------------------------------

+1 looks good

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Updated: (HBASE-3186) Patch that disables pread

Posted by "stack (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-3186:
-------------------------

    Attachment: disable_read.txt

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Commented: (HBASE-3186) Patch that disables pread

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12997103#comment-12997103 ] 

Andrew Purtell commented on HBASE-3186:
---------------------------------------

Still need this open?

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Commented: (HBASE-3186) Patch that disables pread

Posted by "ryan rawson (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12997251#comment-12997251 ] 

ryan rawson commented on HBASE-3186:
------------------------------------

also HDFS-347 is really promising as well and avoids this.

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Commented: (HBASE-3186) Patch that disables pread

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12927225#action_12927225 ] 

Andrew Purtell commented on HBASE-3186:
---------------------------------------

Does this fix the problem? Is it something others running 0.20 should pull in?

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Commented: (HBASE-3186) Patch that disables pread

Posted by "Andrew Purtell (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12997267#comment-12997267 ] 

Andrew Purtell commented on HBASE-3186:
---------------------------------------

bq. also HDFS-347 is really promising as well and avoids this.

Concur. I've seen early indications of major throughput and latency improvements with the 0.20-append version of this patch ported to CDH3B3 with no indications of instability.


      


> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Resolved: (HBASE-3186) Patch that disables pread

Posted by "stack (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-3186.
--------------------------

    Resolution: Not A Problem

Mozilla problem had to do with bad NIC driver.  Hopefully pread is about to get less dumb (hdfs-941).  Closing in meantime as 'Not a problem'.

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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[jira] Updated: (HBASE-3186) Patch that disables pread

Posted by "stack (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/HBASE-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-3186:
-------------------------

    Attachment: 3006-3185-patch-to-0.20.6.txt

Here is the 3006 + 3186 patch I made for 0.20.6 for mozilla crew.

> Patch that disables pread
> -------------------------
>
>                 Key: HBASE-3186
>                 URL: https://issues.apache.org/jira/browse/HBASE-3186
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>         Attachments: 3006-3185-patch-to-0.20.6.txt, disable_read.txt
>
>
> Make a patch to disable pread to see if pread is responsible for growing number of established connections seen on the mozilla cluster

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