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https://issues.apache.org/jira/browse/HDFS-8794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yi Liu updated HDFS-8794:
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Summary: Improve CorruptReplicasMap#corruptReplicasMap (was: Improve
CorruptReplicasMap)
> Improve CorruptReplicasMap#corruptReplicasMap
> ---------------------------------------------
>
> Key: HDFS-8794
> URL: https://issues.apache.org/jira/browse/HDFS-8794
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Yi Liu
> Assignee: Yi Liu
>
> Currently we use {{TreeMap}} for {{corruptReplicasMap}}, actually the only
> need sorted place is {{getCorruptReplicaBlockIds}} which is used by test.
> So we can use {{HashMap}}.
> From memory and performance view, {{HashMap}} is better than {{TreeMap}}, a
> simliar optimization HDFS-7433. Of course we need to make few change to
> {{getCorruptReplicaBlockIds}}.
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