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https://issues.apache.org/jira/browse/HDFS-16660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17572313#comment-17572313
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Steve Loughran commented on HDFS-16660:
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for anyone doing this, look in hadoop common package 
org.apache.hadoop.util.functional for function interfaces which can raise iOEs, 
helpers to unwrap exceptions, and support for using RemoteIterator for 
iterating over results. you need them if you are invoking our own APIs

> Improve Code With Lambda in IPCLoggerChannel class
> --------------------------------------------------
>
>                 Key: HDFS-16660
>                 URL: https://issues.apache.org/jira/browse/HDFS-16660
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> Improve Code With Lambda in IPCLoggerChannel class



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