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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HADOOP-989) Namenode does not need to use Block objects
Date Tue, 20 Feb 2007 21:55:05 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Raghu Angadi reassigned HADOOP-989:
-----------------------------------

    Assignee: Raghu Angadi

> Namenode does not need to use Block objects
> -------------------------------------------
>
>                 Key: HADOOP-989
>                 URL: https://issues.apache.org/jira/browse/HADOOP-989
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Raghu Angadi
>         Assigned To: Raghu Angadi
>
> Currently Block object has Block ID and Block length. There are various maps in Namenode
that map from or to Block objects but its length is rarely used and essentially a nice-to-have
member. We could track only BlockIds in Namenode and if length is required we could store
it in rest of the block related data (see HADOOP 988). 
> This will reduce memory and will make block look ups faster. 

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