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From: Harsh J <harsh@cloudera.com>
Date: Tue, 28 Jan 2014 16:30:35 +0530
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 <CAOcnVr2JhwPhp4VVe7BdXP_7+3BmYK8FV_r=Sd_RD+nCKrOiVw@mail.gmail.com>
Subject: Re: memory management module of Namenode
To: "<user@hadoop.apache.org>" <user@hadoop.apache.org>
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Hi,

The central class is FSNamesystem.java downwards. I'd advise drilling
down from the NameNodeRpcServer sources at
https://github.com/apache/hadoop-common/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java,
for any client operation your curiosity wants to dive into.

On Tue, Jan 28, 2014 at 4:14 PM, Chetan Agrawal <cagrawal11@gmail.com> wrote:
> I read that the namenode keeps all the metadata record in main memory right
> for fast access.
> I want to study the code where the namenode is instructed to do so i.e. to
> keep metadata record in main memory. where can i find the source code file
> for this namenode memory management? i am using github and have
> 'hadoop-common' repository.


-- 
Harsh J