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Date: Sun, 29 Apr 2007 18:02:28 -0700
From: "Timothy Chklovski" <tchklovski@gmail.com>
To: hadoop-user@lucene.apache.org
Subject: Re: Decommission of datanodes
In-Reply-To: <4634CEF1.8030607@oskarsson.nu>
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References: <4634CEF1.8030607@oskarsson.nu>

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which commands are you issuing to decommission the nodes?

On 4/29/07, Johan Oskarsson <johan@oskarsson.nu> wrote:
>
> Hi.
>
> I'm trying to decommission 10 datanodes of 35 in our cluster. The
> process have been running for a couple of days
> but only one node have finished. Perhaps I should have tried to
> decommission one at the time?
> I was afraid it would lead to unnecessary  transfers as the node being
> decommissioned would probably have copied data to other nodes
> that I was going to decommission later.
>
> There's no way of seeing how far the process have come?
>
> The logs contain a lot of these:
>
> 2007-04-29 16:56:56,411 WARN org.apache.hadoop.fs.FSNamesystem: Not able
> to place enough replicas, still in need of 1
>
> Is that related to the decommission process?
>
> /Johan
>

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