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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-1230) BlocksMap.blockinfo is not getting cleared immediately after deleting a block.This will be cleared only after block report comes from the datanode.Why we need to maintain the blockinfo till that time.
Date Fri, 25 Jun 2010 02:03:50 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12882425#action_12882425
] 

Konstantin Shvachko commented on HDFS-1230:
-------------------------------------------

Thanks Gokul for clarifying. Makes sense now. This has already been changed in the trunk.
So it would be only for 0.20.

> BlocksMap.blockinfo is not getting cleared immediately after deleting a block.This will
be cleared only after block report comes from the datanode.Why we need to maintain the blockinfo
till that time.
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-1230
>                 URL: https://issues.apache.org/jira/browse/HDFS-1230
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.20.1
>            Reporter: Gokul
>
> BlocksMap.blockinfo is not getting cleared immediately after deleting a block.This will
be cleared only after block report comes from the datanode.Why we need to maintain the blockinfo
till that time???? It increases namenode memory unnecessarily. 

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