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From "Xiaoyu Yao (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-12016) Ozone: SCM: Container metadata are not loaded properly after datanode restart
Date Fri, 23 Jun 2017 00:14:00 GMT
Xiaoyu Yao created HDFS-12016:
---------------------------------

             Summary: Ozone: SCM: Container metadata are not loaded properly after datanode
restart
                 Key: HDFS-12016
                 URL: https://issues.apache.org/jira/browse/HDFS-12016
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ozone, scm
    Affects Versions: HDFS-7240
            Reporter: Nandakumar
            Assignee: Xiaoyu Yao


Repro steps (Credit to [~nandakumar131])
1. create volume/bucket/key 
2. putkey
3. restart DN
4. getkey will hit error on container not found like below.

{code}
2017-06-22 15:28:29,950 [Thread-48] INFO  (OzoneExceptionMapper.java:39)  vol-2/bucket-1/key-1
xyao 8727acc4-c1e9-4ba3-a819-4c0e16957079 - Returning exception. ex: {"httpCode":500,"shortMessage":"internalServerError","resource":"xyao","message":"org.apache.hadoop.scm.container.common.helpers.StorageContainerException:
Unable to find the container. Name: 48cb0c3d-0537-4cff-b716-a7f69ebf50bc","requestID":"8 
{code}

The root cause is OzoneContainer#OzoneContainer does not load containers from repository properly
when ozone.container.metadata.dirs are specified. 

The fix is to append the CONTAINER_ROOT_PREFIX when looking for containers on the datanode.



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