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Posted to notifications@accumulo.apache.org by "Eric Newton (JIRA)" <ji...@apache.org> on 2012/09/20 20:04:07 UTC
[jira] [Created] (ACCUMULO-770) TableLoadBalancer /
DefaultLoadBalancer assigns tables unevenly
Eric Newton created ACCUMULO-770:
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Summary: TableLoadBalancer / DefaultLoadBalancer assigns tables unevenly
Key: ACCUMULO-770
URL: https://issues.apache.org/jira/browse/ACCUMULO-770
Project: Accumulo
Issue Type: Bug
Components: master
Affects Versions: 1.4.1
Reporter: Eric Newton
Assignee: Eric Newton
Fix For: 1.4.2
During assignment, each table balancer starts assigning tablets in order. This ensures the the "lowest" tabletserver gets at least one tablet for each table. This can make for an unbalanced cluster when there are many small tables. Randomize the list of tablets in the DefaultLoadBalancer to evenly distribute tablets on a new cluster.
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[jira] [Resolved] (ACCUMULO-770) TableLoadBalancer /
DefaultLoadBalancer assigns tables unevenly
Posted by "Eric Newton (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ACCUMULO-770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Newton resolved ACCUMULO-770.
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Resolution: Fixed
fixed the unit test
> TableLoadBalancer / DefaultLoadBalancer assigns tables unevenly
> ---------------------------------------------------------------
>
> Key: ACCUMULO-770
> URL: https://issues.apache.org/jira/browse/ACCUMULO-770
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.4.1
> Reporter: Eric Newton
> Assignee: Eric Newton
> Fix For: 1.4.2
>
>
> During assignment, each table balancer starts assigning tablets in order. This ensures the the "lowest" tabletserver gets at least one tablet for each table. This can make for an unbalanced cluster when there are many small tables. Randomize the list of tablets in the DefaultLoadBalancer to evenly distribute tablets on a new cluster.
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[jira] [Resolved] (ACCUMULO-770) TableLoadBalancer /
DefaultLoadBalancer assigns tables unevenly
Posted by "Eric Newton (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ACCUMULO-770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Eric Newton resolved ACCUMULO-770.
----------------------------------
Resolution: Fixed
resolved with r1397048 and r1397050
> TableLoadBalancer / DefaultLoadBalancer assigns tables unevenly
> ---------------------------------------------------------------
>
> Key: ACCUMULO-770
> URL: https://issues.apache.org/jira/browse/ACCUMULO-770
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.4.1
> Reporter: Eric Newton
> Assignee: Eric Newton
> Fix For: 1.4.2
>
>
> During assignment, each table balancer starts assigning tablets in order. This ensures the the "lowest" tabletserver gets at least one tablet for each table. This can make for an unbalanced cluster when there are many small tables. Randomize the list of tablets in the DefaultLoadBalancer to evenly distribute tablets on a new cluster.
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[jira] [Reopened] (ACCUMULO-770) TableLoadBalancer /
DefaultLoadBalancer assigns tables unevenly
Posted by "John Vines (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ACCUMULO-770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
John Vines reopened ACCUMULO-770:
---------------------------------
On Ubuntu systems, tests are inconsistently failing. Occured on both Ubuntu 12.04 and 12.10 Beta2 with openjdk as well as Oracle java 6u35. Was able to recreate with just running junit tests in eclipse, as well as maven runs.
> TableLoadBalancer / DefaultLoadBalancer assigns tables unevenly
> ---------------------------------------------------------------
>
> Key: ACCUMULO-770
> URL: https://issues.apache.org/jira/browse/ACCUMULO-770
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.4.1
> Reporter: Eric Newton
> Assignee: Eric Newton
> Fix For: 1.4.2
>
>
> During assignment, each table balancer starts assigning tablets in order. This ensures the the "lowest" tabletserver gets at least one tablet for each table. This can make for an unbalanced cluster when there are many small tables. Randomize the list of tablets in the DefaultLoadBalancer to evenly distribute tablets on a new cluster.
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[jira] [Comment Edited] (ACCUMULO-770) TableLoadBalancer /
DefaultLoadBalancer assigns tables unevenly
Posted by "John Vines (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ACCUMULO-770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13474258#comment-13474258 ]
John Vines edited comment on ACCUMULO-770 at 10/11/12 3:58 PM:
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On Ubuntu systems, tests are inconsistently failing. Occured on both Ubuntu 12.04 and 12.10 Beta2 with openjdk as well as Oracle java 6u35. Was able to recreate with just running junit tests in eclipse, as well as maven runs. Specifically, org.apache.accumulo.server.master.balancer.DefaultLoadBalancerTest#testAssignMigrations(). I saw successes as well as failures where 3 was expected and got 4 or 2.
was (Author: vines):
On Ubuntu systems, tests are inconsistently failing. Occured on both Ubuntu 12.04 and 12.10 Beta2 with openjdk as well as Oracle java 6u35. Was able to recreate with just running junit tests in eclipse, as well as maven runs.
> TableLoadBalancer / DefaultLoadBalancer assigns tables unevenly
> ---------------------------------------------------------------
>
> Key: ACCUMULO-770
> URL: https://issues.apache.org/jira/browse/ACCUMULO-770
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.4.1
> Reporter: Eric Newton
> Assignee: Eric Newton
> Fix For: 1.4.2
>
>
> During assignment, each table balancer starts assigning tablets in order. This ensures the the "lowest" tabletserver gets at least one tablet for each table. This can make for an unbalanced cluster when there are many small tables. Randomize the list of tablets in the DefaultLoadBalancer to evenly distribute tablets on a new cluster.
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