hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Chen Liang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12256) Ozone : handle inactive containers on DataNode side
Date Thu, 03 Aug 2017 17:49:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chen Liang updated HDFS-12256:
    Issue Type: Sub-task  (was: Bug)
        Parent: HDFS-7240

> Ozone : handle inactive containers on DataNode side
> ---------------------------------------------------
>                 Key: HDFS-12256
>                 URL: https://issues.apache.org/jira/browse/HDFS-12256
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Chen Liang
> When a container gets created, corresponding metadata gets added to {{ContainerManagerImpl#containerMap}}.
What {{containerMap}} stores is a containerName to {{ContainerStatus}} instance map. When
datanode starts, it also loads this map from disk file metadata. As long as the containerName
is found in this map, it is considered an existing container.
> An issue we saw was that, occasionally, when the container creation on datanode fails,
the metadata of the failed container may still get added to {{containerMap}}, with active
flag set to false. But currently such containers are not being handled, containers with active=false
are just treated as normal containers. Then when someone tries to write to this container,
fails can happen.

This message was sent by Atlassian JIRA

To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org

View raw message