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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12382) Ozone: SCM: BlockManager creates a new container for each allocateBlock call
Date Thu, 31 Aug 2017 20:56:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16149591#comment-16149591
] 

Anu Engineer commented on HDFS-12382:
-------------------------------------

cc : [~xyao] FYI .. 

> Ozone: SCM: BlockManager creates a new container for each allocateBlock call
> ----------------------------------------------------------------------------
>
>                 Key: HDFS-12382
>                 URL: https://issues.apache.org/jira/browse/HDFS-12382
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>            Reporter: Nandakumar
>            Assignee: Nandakumar
>         Attachments: HDFS-12382-HDFS-7240.000.patch
>
>
> {{StorageContainerManager}}'s block protocol creates a new container for each allocate
block call instead of using existing open containers. This behavior is not seen once the cluster
is restarted.
> When {{createContainer}} flag is set, the container state is changed from {{ALLOCATED}}
to {{CREATING}}. But in {{refreshContainers}} call only {{ALLOCATED}} state is handled.
> During restart {{loadAllocatedContainers}} loads the {{containers}} map properly, which
fixes the issue after restart. But we will face the same issue later when we allocate new
containers.



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