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Posted to common-user@hadoop.apache.org by Bwolen Yang <wb...@gmail.com> on 2007/06/09 02:21:41 UTC
Incompatible namespaceIDs
Hi.
Upgrading from 0.12.3 to 0.13 seems to work fine. (at least the
before and after "fsck "and "dfs -lsr" outputs matches).
Then I shut down the DFS cluster, and reformat the DFS (to start a new
round of performance test). The datanodes all have the following
exception.
2007-06-08 17:13:27,985 ERROR org.apache.hadoop.dfs.DataNode:
java.io.IOExceptio
n: Incompatible namespaceIDs in /mnt/hadoop/bwolen/dfs/data: namenode
namespaceID = 1399119814; datanode namespaceID = -1646824738
I'll blow away these directories and start from scratch. Just thought
to let you know.
bwolen
Re: Incompatible namespaceIDs
Posted by Bwolen Yang <wb...@gmail.com>.
Thanks. I should have checked Jira first. sorry.
bwolen
On 6/10/07, Nigel Daley <nd...@yahoo-inc.com> wrote:
> This is a known issue:
> http://issues.apache.org/jira/browse/HADOOP-1212
>
> Nige
>
> On Jun 8, 2007, at 5:35 PM, Bwolen Yang wrote:
>
> > Looks like this problem is not related to the upgrade, but a
> > problem in 0.13.0.
> > Basically if I were to delete all the dfs directories and reformat,
> > the datanodes come up ok. however, if I were to reformat again, the
> > datanodes won't be able to come up due to the exception mentioned
> > below.
> >
> > bwolen
> >
> > On 6/8/07, Bwolen Yang <wb...@gmail.com> wrote:
> >> Hi.
> >>
> >> Upgrading from 0.12.3 to 0.13 seems to work fine. (at least the
> >> before and after "fsck "and "dfs -lsr" outputs matches).
> >>
> >> Then I shut down the DFS cluster, and reformat the DFS (to start a
> >> new
> >> round of performance test). The datanodes all have the following
> >> exception.
> >>
> >> 2007-06-08 17:13:27,985 ERROR org.apache.hadoop.dfs.DataNode:
> >> java.io.IOExceptio
> >> n: Incompatible namespaceIDs in /mnt/hadoop/bwolen/dfs/data: namenode
> >> namespaceID = 1399119814; datanode namespaceID = -1646824738
> >>
> >> I'll blow away these directories and start from scratch. Just
> >> thought
> >> to let you know.
> >>
> >> bwolen
> >>
>
>
Re: Incompatible namespaceIDs
Posted by Nigel Daley <nd...@yahoo-inc.com>.
This is a known issue:
http://issues.apache.org/jira/browse/HADOOP-1212
Nige
On Jun 8, 2007, at 5:35 PM, Bwolen Yang wrote:
> Looks like this problem is not related to the upgrade, but a
> problem in 0.13.0.
> Basically if I were to delete all the dfs directories and reformat,
> the datanodes come up ok. however, if I were to reformat again, the
> datanodes won't be able to come up due to the exception mentioned
> below.
>
> bwolen
>
> On 6/8/07, Bwolen Yang <wb...@gmail.com> wrote:
>> Hi.
>>
>> Upgrading from 0.12.3 to 0.13 seems to work fine. (at least the
>> before and after "fsck "and "dfs -lsr" outputs matches).
>>
>> Then I shut down the DFS cluster, and reformat the DFS (to start a
>> new
>> round of performance test). The datanodes all have the following
>> exception.
>>
>> 2007-06-08 17:13:27,985 ERROR org.apache.hadoop.dfs.DataNode:
>> java.io.IOExceptio
>> n: Incompatible namespaceIDs in /mnt/hadoop/bwolen/dfs/data: namenode
>> namespaceID = 1399119814; datanode namespaceID = -1646824738
>>
>> I'll blow away these directories and start from scratch. Just
>> thought
>> to let you know.
>>
>> bwolen
>>
Re: Incompatible namespaceIDs
Posted by Bwolen Yang <wb...@gmail.com>.
Looks like this problem is not related to the upgrade, but a problem in 0.13.0.
Basically if I were to delete all the dfs directories and reformat,
the datanodes come up ok. however, if I were to reformat again, the
datanodes won't be able to come up due to the exception mentioned
below.
bwolen
On 6/8/07, Bwolen Yang <wb...@gmail.com> wrote:
> Hi.
>
> Upgrading from 0.12.3 to 0.13 seems to work fine. (at least the
> before and after "fsck "and "dfs -lsr" outputs matches).
>
> Then I shut down the DFS cluster, and reformat the DFS (to start a new
> round of performance test). The datanodes all have the following
> exception.
>
> 2007-06-08 17:13:27,985 ERROR org.apache.hadoop.dfs.DataNode:
> java.io.IOExceptio
> n: Incompatible namespaceIDs in /mnt/hadoop/bwolen/dfs/data: namenode
> namespaceID = 1399119814; datanode namespaceID = -1646824738
>
> I'll blow away these directories and start from scratch. Just thought
> to let you know.
>
> bwolen
>