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https://issues.apache.org/jira/browse/HDFS-16277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17432780#comment-17432780
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guo commented on HDFS-16277:
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Thanks [~ayushtkn] for you kindly review, glad to meet hadoop here:)
> Improve decision in AvailableSpaceBlockPlacementPolicy
> ------------------------------------------------------
>
> Key: HDFS-16277
> URL: https://issues.apache.org/jira/browse/HDFS-16277
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: block placement
> Affects Versions: 3.3.1
> Reporter: guo
> Assignee: guo
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0, 3.3.2
>
> Time Spent: 5h 10m
> Remaining Estimate: 0h
>
> Hi
> In product environment,we may meet two or more datanode usage reaches nealy
> 100%,for exampe 99.99%,98%,97%.
> if we configure `AvailableSpaceBlockPlacementPolicy` , we also have the
> chance to choose the 99.99%(assume it is the highest usage),for we treat the
> two choosen datanode as the same usage if their storage usage are different
> within 5%.
> but this is not what we want, so i suggest we can improve the decision.
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