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https://issues.apache.org/jira/browse/HDFS-16059?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ayush Saxena updated HDFS-16059:
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Attachment: HDFS-16059-WIP-01.patch
> dfsadmin -listOpenFiles -blockingDecommission can miss some files
> -----------------------------------------------------------------
>
> Key: HDFS-16059
> URL: https://issues.apache.org/jira/browse/HDFS-16059
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: dfsadmin
> Reporter: Akira Ajisaka
> Priority: Major
> Attachments: HDFS-16059-WIP-01.patch, HDFS-16059-regression-test.patch
>
>
> While reviewing HDFS-13671, I found "dfsadmin -listOpenFiles
> -blockingDecommission" can drop some files.
> [https://github.com/apache/hadoop/pull/3065#discussion_r647396463]
> {quote}If the DataNodes have the following open files and we want to list all
> the open files:
> DN1: [1001, 1002, 1003, ... , 2000]
> DN2: [1, 2, 3, ... , 1000]
> At first getFilesBlockingDecom(0, "/") is called and it returns [1001, 1002,
> ... , 2000] because it reached max size (=1000), and next
> getFilesBlockingDecom(2000, "/") is called because the last inode Id of the
> previous result is 2000. That way the open files of DN2 is missed
> {quote}
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