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Subject: RE: secondary namenode errors
Date: Fri, 24 Aug 2007 19:20:59 -0700
Message-ID: <FCDAD498A048A6428B2255D5D4587D37558736@sf2pmxb01.thefacebook.com>
In-Reply-To: <46CEF93B.3080801@yahoo-inc.com>
Thread-Topic: secondary namenode errors
Thread-Index: AcfmY9EVGCpNMAsBSoydnf4B7O9NxQAWk6sQ
From: "Joydeep Sen Sarma" <jssarma@facebook.com>
To: <hadoop-user@lucene.apache.org>

I wish I had read the bug more carefully - thought that the issue was
fixed in 0.13.1.

Of course not, the issue persists. Meanwhile - half the files are
corrupted after the upgrade (followed the upgrade wiki, tried to restore
to backed up metadata and old version - to no avail).

Sigh - have a nice weekend everyone,

Joydeep

-----Original Message-----
From: Koji Noguchi [mailto:knoguchi@yahoo-inc.com]=20
Sent: Friday, August 24, 2007 8:29 AM
To: hadoop-user@lucene.apache.org
Subject: Re: secondary namenode errors

Joydeep,

I think you're hitting this bug.
http://issues.apache.org/jira/browse/HADOOP-1076

In any case, as Raghu suggested, please use 0.13.1 and not 0.13.

Koji


Raghu Angadi wrote:
> Joydeep Sen Sarma wrote:
>> Thanks for replying.
>>
>> Can you please clarify - is it the case that the secondary namenode
>> stuff only works in 0.13.1? and what's the connection with
replication
>> factor?
>>
>> We lost the file system completely once, trying to make sure we can
>> avoid it the next time.
>
> I am not sure if the problem you reported still exists in 0.13.1. You=20
> might still have the problem and you can ask again. But you should=20
> move to 0.13.1 since it has some critical fixes. See release notes for

> 0.13.1 or HADOOP-1603. You should always upgrade to the latest minor=20
> release version when moving to next major version.
>
> Raghu.
>
>> Joydeep
>>
>> -----Original Message-----
>> From: Raghu Angadi [mailto:rangadi@yahoo-inc.com] Sent: Thursday,=20
>> August 23, 2007 9:44 PM
>> To: hadoop-user@lucene.apache.org
>> Subject: Re: secondary namenode errors
>>
>>
>> On a related note, please don't use 0.13.0, use the latest released=20
>> version for 0.13 (I think it is 0.13.1). If the secondary namenode=20
>> actually works, then it will resulting all the replications set to 1.
>>
>> Raghu.
>>
>> Joydeep Sen Sarma wrote:
>>> Hi folks,