hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-4324) Single unassigned directory is very slow when there are many unassigned nodes
Date Wed, 16 Nov 2016 20:52:58 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4324?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-4324.
--------------------------
    Resolution: Won't Fix

No longer pertinent (don't keep list of unassigneds in zk now). Could have this issue when
RIT... But Assignment is being redone in 2.0 so none of this stuff in ZK.

Resolving as no-longer-pertinent.

> Single unassigned directory is very slow when there are many unassigned nodes
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-4324
>                 URL: https://issues.apache.org/jira/browse/HBASE-4324
>             Project: HBase
>          Issue Type: Bug
>          Components: Zookeeper
>    Affects Versions: 0.90.4
>            Reporter: Todd Lipcon
>
> Because we use a single znode for /unassigned, and we re-list it every time its contents
change, assignment speed per region is O(number of unassigned regions) rather than O(1). Every
time something changes about one unassigned region, the master has to re-list the entire contents
of the directory inside of AssignmentManager.nodeChildrenChanged().



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message