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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-509) Redesisn DataNode volumeMap to include all types of Replicas
Date Tue, 04 Aug 2009 18:12:14 GMT

     [ https://issues.apache.org/jira/browse/HDFS-509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang updated HDFS-509:
-------------------------------

    Description: 
With the new append design, replicas at a DataNode could be in one of the five states: Finalized,
ReplicaBeingWritten, ReplicaWaitingToBeRecovered, ReplicaUnderRecovery, and Temporay. This
jira is to
1. define the in-memory representation of these five types of replicas
2. redefine volumeMap to include all five types of replicas and remove ongoingCreates map.

  was:
With the new append design, replicas at a DataNode could be in one of the five states: Finalized,
ReplicaBeingWritten, ReplicaWaitingToBeRecovered, ReplicaUnderRecovery, and Temporay. This
jira is to
1. define the in-memory representation of these five types of replicas
2. define the on-disk representation of these replicas
2. redefine volumeMap to include all five types of replicas and remove ongoingCreates map.


> Redesisn DataNode volumeMap to include all types of Replicas
> ------------------------------------------------------------
>
>                 Key: HDFS-509
>                 URL: https://issues.apache.org/jira/browse/HDFS-509
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: data-node
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.21.0
>
>
> With the new append design, replicas at a DataNode could be in one of the five states:
Finalized, ReplicaBeingWritten, ReplicaWaitingToBeRecovered, ReplicaUnderRecovery, and Temporay.
This jira is to
> 1. define the in-memory representation of these five types of replicas
> 2. redefine volumeMap to include all five types of replicas and remove ongoingCreates
map.

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