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https://issues.apache.org/jira/browse/HDFS-12969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17156863#comment-17156863
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Takanobu Asanuma commented on HDFS-12969:
-----------------------------------------
[~hemanthboyina] Thanks for uploading the patch.
TestDecommission#testListOpenFilesWithType failed when
{{dfs.namenode.list.openfiles.num.responses}} is not 1 (like 2 or 3). Some
BLOCKING_DECOMMISSION files are incorrectly listed as ALL_OPEN_FILES.
When NameNode returns ALL_OPEN_FILES(non-blocking) files in batch, NameNode
must ensure that the files are not included in ALL BLOCKING_DECOMMISSION files
each time FSNamesystem#listOpenFiles is executed. However, it would require a
huge amount of calculation. IMHO, implementing this feature seems difficult
with the current codes. I think NameNode needs to have the list of
ALL_OPEN_FILES(non-blocking) files in advance.
> DfsAdmin listOpenFiles should report files by type
> --------------------------------------------------
>
> Key: HDFS-12969
> URL: https://issues.apache.org/jira/browse/HDFS-12969
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.1.0
> Reporter: Manoj Govindassamy
> Assignee: Hemanth Boyina
> Priority: Major
> Attachments: HDFS-12969.001.patch, HDFS-12969.002.patch
>
>
> HDFS-11847 has introduced a new option to {{-blockingDecommission}} to an
> existing command
> {{dfsadmin -listOpenFiles}}. But the reporting done by the command doesn't
> differentiate the files based on the type (like blocking decommission). In
> order to change the reporting style, the proto format used for the base
> command has to be updated to carry additional fields and better be done in a
> new jira outside of HDFS-11847. This jira is to track the end-to-end
> enhancements needed for dfsadmin -listOpenFiles console output.
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