accumulo-notifications mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (ACCUMULO-847) out of memory error creating native thread
Date Fri, 16 Nov 2012 02:22:11 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498543#comment-13498543
] 

Josh Elser edited comment on ACCUMULO-847 at 11/16/12 2:20 AM:
---------------------------------------------------------------

I reran Eric's test on my box at home (8core, 16G of ram, 3 spinning disks for data dirs)
using the same Accumulo heap and native map sizes.

Relevant software versions:
* Sun JDK 1.6.0_37
* glibc-2.15-r3 (if it's important, I can resolve what Gentoo patched in the r3 version above
2.15 that the community tagged)
* Kernel 3.6.6

||Arenas||Thresh||Res Mem (GB)||
|0|0|2|
|0|1|1.9|
|1|0|1.3|
|1|1|1.3|
|4|0|1.6|

The big take-away I see from this is:

# Altering the number of arenas has the expected effect on resident memory
# On my system, I did *not* see resident memory rise out of reasonable bounds.
                
      was (Author: elserj):
    I reran Eric's test on my box at home (8core, 16G of ram, 3 spinning disks for data dirs)
using the same Accumulo heap and native map sizes.

Relevant software versions:
* Sun JDK 1.6.0_37
* glibc-2.15-r3 (if it's important, I can resolve what Gentoo patched in the r3 version above
2.15 that the community tagged)
* Kernel 3.6.6

||Arenas||Thresh=0||Res Mem (GB)||
|0|0|2|
|0|1|1.9|
|1|0|1.3|
|1|1|1.3|
|4|0|1.6|

The big take-away I see from this is:

# Altering the number of arenas has the expected effect on resident memory
# On my system, I did *not* see resident memory rise out of reasonable bounds.
                  
> out of memory error creating native thread
> ------------------------------------------
>
>                 Key: ACCUMULO-847
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-847
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>         Environment: RHEL6
>            Reporter: Eric Newton
>            Assignee: Keith Turner
>             Fix For: 1.5.0
>
>
> Long running tablet servers had many gigabytes of memory allocated above what was expected
(native + jvm).  Inspection of the heap did not show an unusual number of native objects allocated.
 Servers would eventually fail to create new threads.
> See HADOOP-7154 for the details.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message