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From "Manoj Govindassamy (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11986) Dfsadmin should report erasure coding related information separately
Date Fri, 16 Jun 2017 19:01:00 GMT
Manoj Govindassamy created HDFS-11986:
-----------------------------------------

             Summary: Dfsadmin should report erasure coding related information separately

                 Key: HDFS-11986
                 URL: https://issues.apache.org/jira/browse/HDFS-11986
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: erasure-coding, hdfs
    Affects Versions: 3.0.0-alpha1
            Reporter: Manoj Govindassamy
            Assignee: Manoj Govindassamy


dfsadmin -report command currently reports only the aggregated block stats like below.
{noformat}
# hdfs dfsadmin -report
Configured Capacity: 1498775814144 (1.36 TB)
Present Capacity: 931852427264 (867.86 GB)
DFS Remaining: 931805765632 (867.81 GB)
DFS Used: 46661632 (44.50 MB)
DFS Used%: 0.01%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
Missing blocks (with replication factor 1): 0
Pending deletion blocks: 0
{noformat}

Just like fsck, the proposal is to make dfsadmin command to report erasure coding blockgroups
stats separately, like below
{noformat}
# hdfs dfsadmin -report
Configured Capacity: 1498775814144 (1.36 TB)
Present Capacity: 931852427264 (867.86 GB)
DFS Remaining: 931805765632 (867.81 GB)
DFS Used: 46661632 (44.50 MB)
DFS Used%: 0.01%
Replicated Blocks:
  Under replicated blocks: 0
  Blocks with corrupt replicas: 0
  Missing blocks: 0
  Missing blocks (with replication factor 1): 0
  Pending deletion blocks: 0
Erasure Coded Block Groups:
  Under ec block groups: 0
  EC block groups with corrupt internal blocks: 0
  Missing ec block groups: 0
  Pending deletion ec block groups: 0
{noformat}

Erasure coding specific details needed for this enhancements are already made available as
part of HDFS-10999.



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