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Posted to hdfs-dev@hadoop.apache.org by "JiangHua Zhu (Jira)" <ji...@apache.org> on 2021/11/11 07:20:00 UTC

[jira] [Created] (HDFS-16316) Improve DataNode to calculate used capacity

JiangHua Zhu created HDFS-16316:
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             Summary: Improve DataNode to calculate used capacity
                 Key: HDFS-16316
                 URL: https://issues.apache.org/jira/browse/HDFS-16316
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
    Affects Versions: 2.9.2
            Reporter: JiangHua Zhu


Something unusual happened in the online environment.
The DataNode is configured with 11 disks (${datanode.data.dir}). It is normal for 10 disks to calculate the used capacity, and the calculated value for the other 1 disk is much larger, which is very strange.
This is the view of the scene:


We can look at the view on linux:

There is a big gap here, regarding'/mnt/dfs/11/data'. This situation should be prohibited from happening.



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