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https://issues.apache.org/jira/browse/HDFS-17475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17838075#comment-17838075
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ASF GitHub Bot commented on HDFS-17475:
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kokonguyen191 opened a new pull request, #6745:
URL: https://github.com/apache/hadoop/pull/6745
### Description of PR
Sometimes a job can fail due to one unreadable file down the line due to
missing replicas or dead DNs or other reason. This command allows users to
check whether files are readable by checking for metadata on DNs without
executing full read pipelines of the files.
### How was this patch tested?
Unit tests, local deployment, production. Also tested for performance.
### For code changes:
- [x] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
> Add a command to check if files are readable
> --------------------------------------------
>
> Key: HDFS-17475
> URL: https://issues.apache.org/jira/browse/HDFS-17475
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: Felix N
> Assignee: Felix N
> Priority: Minor
> Fix For: 3.5.0
>
>
> Sometimes a job can fail due to one unreadable file down the line due to
> missing replicas or dead DNs or other reason. This command should allow users
> to check whether files are readable by checking for metadata on DNs without
> executing full read pipelines of the files.
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