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https://issues.apache.org/jira/browse/HDFS-6828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo Nicholas Sze updated HDFS-6828:
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Attachment: h6828_20140808c.patch
Vinay, thanks a lot for reviewing the patch! Here is a new patch incorporated
all your comments.
h6828_20140808c.patch:
# Fixed.
# Changed all Time.now() to Time.monotonicNow().
# You are right that I should return a trimmed list in Dispatcher#init(..).
Then, Balancer#init(..) does not have to check shouldIgnore() again.
# Added javadoc.
> Separate block replica dispatching from Balancer
> ------------------------------------------------
>
> Key: HDFS-6828
> URL: https://issues.apache.org/jira/browse/HDFS-6828
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Attachments: h6828_20140808.patch, h6828_20140808b.patch,
> h6828_20140808c.patch
>
>
> The Balancer class implements two major features, (1) balancing logic for
> selecting replicas in order to balance the cluster and (2) block replica
> dispatching for moving the block replica around. This JIRA is to separate
> (2) from Balancer so that the code could be reused by other code such as the
> new data migration tool proposed in HDFS-6801.
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