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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5465) Blocks remain under-replicated
Date Thu, 12 Mar 2009 23:32:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681544#action_12681544
] 

Hairong Kuang commented on HADOOP-5465:
---------------------------------------

The patch incorporates Raghu's comment.

> Blocks remain under-replicated
> ------------------------------
>
>                 Key: HADOOP-5465
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5465
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.3
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>            Priority: Blocker
>             Fix For: 0.18.4, 0.19.2, 0.20.0, 0.21.0
>
>         Attachments: xmitsSync1.patch
>
>
> Occasionally we see some blocks remain to be under-replicated in our production clusters.
This is what we obeserved:
> 1. Sometimes when increasing the replication factor of a file, some blocks belonged to
this file do not get to increase to the new replication factor.
> 2. When taking meta save in two different days, some blocks remain in under-replication
queue. 

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