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From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-652) Not all Datastructures are updated when a block is deleted
Date Thu, 02 Nov 2006 22:03:19 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-652?page=comments#action_12446738 ] 
Raghu Angadi commented on HADOOP-652:

This will touch addBlock() in FSDataset.java. As part of this I would like the fix the following
as well:

a) currently subdirectories are created only in the last sub directory (e.g. subdir63). 
b) remove siblings array I think it only increase s recursion in addBlock().

> Not all Datastructures are updated when a block is deleted
> ----------------------------------------------------------
>                 Key: HADOOP-652
>                 URL: http://issues.apache.org/jira/browse/HADOOP-652
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>            Reporter: Raghu Angadi
> Currently when a block is deleted, DataNode just deletes the physical file and updates
its map. We need to update more things. For e.g. numBlocks in FSDir is not decremented.. effect
of this would be that we will create more subdirectories than necessary. It might not show
up badly yet since numBlocks gets correct value when the dataNode restarts. I have to see
what else needs to be updated.

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