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From "Takanobu Asanuma (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8792) BlockManager#postponedMisreplicatedBlocks should use a LightWeightHashSet to save memory
Date Mon, 28 Nov 2016 04:27:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15700869#comment-15700869
] 

Takanobu Asanuma commented on HDFS-8792:
----------------------------------------

This seems to have a bug. Please see HDFS-11179.

> BlockManager#postponedMisreplicatedBlocks should use a LightWeightHashSet to save memory
> ----------------------------------------------------------------------------------------
>
>                 Key: HDFS-8792
>                 URL: https://issues.apache.org/jira/browse/HDFS-8792
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Yi Liu
>            Assignee: Yi Liu
>             Fix For: 2.8.0, 3.0.0-alpha1
>
>         Attachments: HDFS-8792.001.patch, HDFS-8792.002.patch, HDFS-8792.003.patch
>
>
> {{LightWeightHashSet}} requires fewer memory than java hashset. 



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