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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12016) Ozone: SCM: Container metadata are not loaded properly after datanode restart
Date Fri, 23 Jun 2017 08:46:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16060595#comment-16060595

Weiwei Yang commented on HDFS-12016:

Hi [~xyao]

Thanks for fixing this, I have tested your patch, it works fine. However the test failures
in {{TestKeys}} looks like related, it seems they are failing because datanode port changes
after dn restart. 

Thank you.

> 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
>         Attachments: HDFS-12016-HDFS-7240.001.patch, HDFS-12016-HDFS-7240.002.patch,
> 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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