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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4072) When deleting a file, it would be better to also remove corresponding block records from BlockManager#pendingReplications
Date Thu, 18 Oct 2012 03:40:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478629#comment-13478629
] 

Eli Collins commented on HDFS-4072:
-----------------------------------

Adding pendingReplications.remove(block) to removeBlock means we're just decrementing the
replica count by 1 right? Seems like we should add this call to removeStoredBlock instead
so we decrement each time a DN reports that the block has been deleted, and we eventually
drop the replica count to 0 and removed the entry from PendingReplications. I think updating
the test to corrupt two replicas would catch this.
                
> When deleting a file, it would be better to also remove corresponding block records from
BlockManager#pendingReplications
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4072
>                 URL: https://issues.apache.org/jira/browse/HDFS-4072
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>            Priority: Minor
>         Attachments: HDFS-4072.trunk.001.patch, HDFS-4072.trunk.002.patch, TestPendingAndDelete.java
>
>
> Currently when deleting a file, blockManager does not remove records that are corresponding
to the file's blocks from pendingRelications. These records can only be removed after timeout
(5~10 min).

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