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https://issues.apache.org/jira/browse/HDFS-9350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14985387#comment-14985387
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Daryn Sharp commented on HDFS-9350:
-----------------------------------

I know SB should be used to append inside a loop, but doesn't the jvm use a SB 
internally for simple plus operations?  If yes, explicit use of a SB only seems 
to decrease readability.

> Avoid creating temprorary strings in Block.toString() and getBlockName()
> ------------------------------------------------------------------------
>
>                 Key: HDFS-9350
>                 URL: https://issues.apache.org/jira/browse/HDFS-9350
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: performance
>    Affects Versions: 2.7.1
>            Reporter: Staffan Friberg
>            Assignee: Staffan Friberg
>            Priority: Minor
>         Attachments: HDFS-9350.001.patch
>
>
> Minor change to use StringBuilders directly to avoid creating temporary 
> strings of Long and Block name when doing toString on a Block.



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