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Posted to hdfs-dev@hadoop.apache.org by "Xiaoqiao He (Jira)" <ji...@apache.org> on 2023/03/06 12:14:00 UTC

[jira] [Resolved] (HDFS-16939) Fix the thread safety bug in LowRedundancyBlocks

     [ https://issues.apache.org/jira/browse/HDFS-16939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiaoqiao He resolved HDFS-16939.
--------------------------------
    Fix Version/s: 3.4.0
     Hadoop Flags: Reviewed
       Resolution: Fixed

> Fix the thread safety bug in LowRedundancyBlocks
> ------------------------------------------------
>
>                 Key: HDFS-16939
>                 URL: https://issues.apache.org/jira/browse/HDFS-16939
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namanode
>            Reporter: Shuyan Zhang
>            Assignee: Shuyan Zhang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>
> The remove method in LowRedundancyBlocks is not protected by synchronized. This method is private and is called by BlockManager. As a result, priorityQueues has the risk of being accessed concurrently by multiple threads.



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