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https://issues.apache.org/jira/browse/HDFS-10653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15389519#comment-15389519
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Daryn Sharp commented on HDFS-10653:
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{{Arrays.toString(components\[i\])}} is going to place square brackets, ie.
"\[component\]" around the name. {{DFSUtil.bytes2String(int,int)}} will let
you avoid using a {{StringBuilder}} entirely - which has been part of the goal
of my patches. +1 after you change it. Bonus points for not constructing the
path unless required but not that concerned about 2.6.
> Optimize conversion from path string to components
> --------------------------------------------------
>
> Key: HDFS-10653
> URL: https://issues.apache.org/jira/browse/HDFS-10653
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs
> Affects Versions: 2.0.0-alpha
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Fix For: 2.8.0, 2.9.0, 2.7.4
>
> Attachments: HDFS-10653-branch-2.6.00.patch,
> HDFS-10653-branch-2.6.01.patch, HDFS-10653-branch-2.6.02.patch,
> HDFS-10653.patch
>
>
> Converting a path String to a byte[][] currently requires an unnecessary
> intermediate conversion from String to String[]. Removing this will reduce
> excessive object allocation and byte copying.
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