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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5780) Fix slightly confusing log from "-metaSave" on NameNode
Date Thu, 07 May 2009 20:56:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5780?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HADOOP-5780:
-------------------------------------------

    Component/s: dfs
    Description: 
After HADOOP-4103, "-metaSave" on NameNode prints "MISSING" in the line for a block that does
not have any good replicas left. 

e.g. : {noformat}
Metasave: Blocks waiting for replication: 1
blk_6735500019364591152_0 (replicas: l: 0 d: 0 c: 2 e: 0 MISSING) 74.6.132.200:50010 :  192.168.0.107:50010
:
{noformat}

"0 MISSING" in the log might imply to the user that there is no missing block, though it implies
"e(xcess replicas) : 0".

We should fix that. Also as part of this I would like to indicate which datanodes are decommissioned
or contain the corrupt replicas.

  was:

After HADOOP-4103, "-metaSave" on NameNode prints "MISSING" in the line for a block that does
not have any good replicas left. 

e.g. : {noformat}
Metasave: Blocks waiting for replication: 1
blk_6735500019364591152_0 (replicas: l: 0 d: 0 c: 2 e: 0 MISSING) 74.6.132.200:50010 :  192.168.0.107:50010
:
{noformat}

"0 MISSING" in the log might imply to the user that there is no missing block, though it implies
"e(xcess replicas) : 0".

We should fix that. Also as part of this I would like to indicate which datanodes are decommissioned
or contain the corrupt replicas.


+1 patch looks good.

> Fix slightly confusing log from "-metaSave" on NameNode
> -------------------------------------------------------
>
>                 Key: HADOOP-5780
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5780
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.20.0
>            Reporter: Raghu Angadi
>            Assignee: Raghu Angadi
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5780.patch, HADOOP-5780.patch, HADOOP-5780.patch
>
>
> After HADOOP-4103, "-metaSave" on NameNode prints "MISSING" in the line for a block that
does not have any good replicas left. 
> e.g. : {noformat}
> Metasave: Blocks waiting for replication: 1
> blk_6735500019364591152_0 (replicas: l: 0 d: 0 c: 2 e: 0 MISSING) 74.6.132.200:50010
:  192.168.0.107:50010 :
> {noformat}
> "0 MISSING" in the log might imply to the user that there is no missing block, though
it implies "e(xcess replicas) : 0".
> We should fix that. Also as part of this I would like to indicate which datanodes are
decommissioned or contain the corrupt replicas.

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