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Date: Wed, 18 Feb 2009 11:34:02 -0800 (PST)
From: "Hairong Kuang (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-4692)  Namenode in infinite loop for
 replicating/deleting corrupted block
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     [ https://issues.apache.org/jira/browse/HADOOP-4692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hairong Kuang updated HADOOP-4692:
----------------------------------

    Status: Patch Available  (was: Open)

>  Namenode in infinite loop for replicating/deleting corrupted block
> -------------------------------------------------------------------
>
>                 Key: HADOOP-4692
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4692
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.18.0
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>             Fix For: 0.20.0
>
>         Attachments: mismatchBlockReplication.patch, mismatchBlockReplication1.patch, namenode_inconsistent_size.patch, truncateBlockReplication.patch
>
>
> Our cluster has an under-replicated block with only one replica, assuming its block id is B. NameNode log shows that NameNode is in an infinite loop replicating/deleting the block.
> INFO org.apache.hadoop.dfs.StateChange: BLOCK* ask DN1 to replicate blk_B to datanode(s) DN2, DN3
> WARN org.apache.hadoop.fs.FSNamesystem: Inconsistent size for block blk_B reported from DN2  current size is 134217728 reported size is 134205440
> WARN org.apache.hadoop.fs.FSNamesystem: Deleting block blk_B from DN2
> INFO org.apache.hadoop.dfs.StateChange: DIR* NameSystem.invalidateBlock: blk_B on DN2
> INFO org.apache.hadoop.dfs.StateChange: BLOCK* NameSystem.delete: blk_B is added to invalidSet of DN2
> INFO org.apache.hadoop.dfs.StateChange: BLOCK* NameSystem.addStoredBlock: blockMap updated: DN2 is added to blk_B size 134217728
> WARN org.apache.hadoop.fs.FSNamesystem: Inconsistent size for block blk_-B reported from DN3 current size is 134217728 reported size is 134205440
> WARN org.apache.hadoop.fs.FSNamesystem: Deleting block blk_B from DN3
> INFO org.apache.hadoop.dfs.StateChange: DIR* NameSystem.invalidateBlock: blk_B on DN3
> INFO org.apache.hadoop.dfs.StateChange: BLOCK* NameSystem.delete: blk_B is added to invalidSet of DN3
> INFO org.apache.hadoop.dfs.StateChange: BLOCK* NameSystem.addStoredBlock: blockMap updated: DN3 is added to blk_B size 134217728
> INFO org.apache.hadoop.dfs.StateChange: BLOCK* ask DN1 to replicate blk_B  to datanode(s) DN4, DN5
> ...

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