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https://issues.apache.org/jira/browse/HDFS-1748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HDFS-1748:
-----------------------------------------
Fix Version/s: Federation Branch
Merged this (r1080836) from trunk to federation.
> Balancer utilization classification is incomplete
> -------------------------------------------------
>
> Key: HDFS-1748
> URL: https://issues.apache.org/jira/browse/HDFS-1748
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: balancer
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: Federation Branch, 0.23.0
>
> Attachments: h1748_20110310.patch
>
>
> {code}
> //Balancer.java
> /* Return true if the given datanode is overUtilized */
> private boolean isOverUtilized(BalancerDatanode datanode) {
> return datanode.utilization > (avgUtilization+threshold);
> }
>
> /* Return true if the given datanode is above average utilized
> * but not overUtilized */
> private boolean isAboveAvgUtilized(BalancerDatanode datanode) {
> return (datanode.utilization <= (avgUtilization+threshold))
> && (datanode.utilization > avgUtilization);
> }
>
> /* Return true if the given datanode is underUtilized */
> private boolean isUnderUtilized(BalancerDatanode datanode) {
> return datanode.utilization < (avgUtilization-threshold);
> }
> /* Return true if the given datanode is below average utilized
> * but not underUtilized */
> private boolean isBelowAvgUtilized(BalancerDatanode datanode) {
> return (datanode.utilization >= (avgUtilization-threshold))
> && (datanode.utilization < avgUtilization);
> }
> {code}
> Where is {{datanode.utilization == avgUtilization}}?
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