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  1. Hadoop HDFS
  2. HDFS-8809

HDFS fsck reports under construction blocks as "CORRUPT"

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.7.0
    • Fix Version/s: 2.8.0, 3.0.0-alpha1
    • Component/s: tools
    • Labels:
      None
    • Environment:

      Hadoop 2.7.1 and HBase 1.1.1, on SUSE11sp3 (other Linuxes not tested, probably not platform-dependent). This did NOT happen with Hadoop 2.4 and HBase 0.98.

    • Hadoop Flags:
      Reviewed

      Description

      Whenever HBase is running, the "hdfs fsck /" reports four hbase-related files in the path "hbase/data/WALs/" as CORRUPT. Even after letting the cluster sit idle for a couple hours, it is still in the corrupt state. If HBase is shut down, the problem goes away. If HBase is then restarted, the problem recurs. This was observed with Hadoop 2.7.1 and HBase 1.1.1, and did NOT happen with Hadoop 2.4 and HBase 0.98.

      hades1:/var/opt/teradata/packages # su hdfs
      hdfs@hades1:/var/opt/teradata/packages> hdfs fsck /
      Connecting to namenode via http://hades1.labs.teradata.com:50070/fsck?ugi=hdfs&path=%2F
      FSCK started by hdfs (auth:SIMPLE) from /39.0.8.2 for path / at Wed Jun 24 20:40:17 GMT 2015
      ...
      /apps/hbase/data/WALs/hades4.labs.teradata.com,16020,1435168292684/hades4.labs.teradata.com%2C16020%2C1435168292684.default.1435175500556: MISSING 1 blocks of total size 83 B.
      /apps/hbase/data/WALs/hades5.labs.teradata.com,16020,1435168290466/hades5.labs.teradata.com%2C16020%2C1435168290466..meta.1435175562144.meta: MISSING 1 blocks of total size 83 B.
      /apps/hbase/data/WALs/hades5.labs.teradata.com,16020,1435168290466/hades5.labs.teradata.com%2C16020%2C1435168290466.default.1435175498500: MISSING 1 blocks of total size 83 B.
      /apps/hbase/data/WALs/hades6.labs.teradata.com,16020,1435168292373/hades6.labs.teradata.com%2C16020%2C1435168292373.default.1435175500301: MISSING 1 blocks of total size 83 B..................................................................................................
      ....................................................................................................
      ....................................................................................................
      ........................................................................................Status: CORRUPT
       Total size:    723977553 B (Total open files size: 332 B)
       Total dirs:    79
       Total files:   388
       Total symlinks:                0 (Files currently being written: 5)
       Total blocks (validated):      387 (avg. block size 1870743 B) (Total open file blocks (not validated): 4)
        ********************************
        UNDER MIN REPL'D BLOCKS:      4 (1.0335917 %)
        dfs.namenode.replication.min: 1
        CORRUPT FILES:        4
        MISSING BLOCKS:       4
        MISSING SIZE:         332 B
        ********************************
       Minimally replicated blocks:   387 (100.0 %)
       Over-replicated blocks:        0 (0.0 %)
       Under-replicated blocks:       0 (0.0 %)
       Mis-replicated blocks:         0 (0.0 %)
       Default replication factor:    3
       Average block replication:     3.0
       Corrupt blocks:                0
       Missing replicas:              0 (0.0 %)
       Number of data-nodes:          3
       Number of racks:               1
      FSCK ended at Wed Jun 24 20:40:17 GMT 2015 in 7 milliseconds
      
      
      The filesystem under path '/' is CORRUPT
      hdfs@hades1:/var/opt/teradata/packages>
      

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              • Assignee:
                jingzhao Jing Zhao
                Reporter:
                heat23 Sudhir Prakash
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                Dates

                • Created:
                  Updated:
                  Resolved: