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Hi,

HDFS isn't a "replacement" for Databases, it is a File-System (Hadoop
Distributed File System - HDFS).

I suggest reading up on what Hadoop is first. Both the book "Hadoop: The
Definitive Guide" by Tom White (O'Reilly) and the mildly dated,
developer-focussed article at
http://developer.yahoo.com/hadoop/tutorial/are great resources at
understanding and getting started with Apache
Hadoop, and understanding how it can help in your work.

On Sat, Feb 18, 2012 at 11:35 AM, Ajit Deshpande
<[EMAIL PROTECTED]>wrote:

>  Hi Steve,****
>
> I m in process of learning HADOOP.****
>
> I have installed HDFS on SUSE-10.****
>
> But I m confused what to do next. I searched over Google but not able to
> find much about it .****
>
> So can anyone suggest what I need to do if I have to implement HDFS for
> different databases?****
>
> ** **
>
> ** **
>
> *
> Ajit Deshpande
> United Software Associates Pvt. Ltd.
> Pune, India
> www.usain.com*****
>
> ** **
>
> *From:* Stuti Awasthi [mailto:[EMAIL PROTECTED]]
> *Sent:* Friday, February 17, 2012 10:22 AM
> *To:* [EMAIL PROTECTED]; Steve Lewis
> *Subject:* RE: facing issues in HDFSProxy****
>
> ** **
>
> After I commented line “
> sslConf.set("proxy.http.test.listener.addr",conf.get("proxy.http.test.listener.addr"));”
> in HDFSProxy.java getting below error :****
>
> ** **
>
> 2012-02-16 14:59:25,156 WARN org.mortbay.log:
> java.lang.NullPointerException****
>
> 2012-02-16 14:59:25,156 INFO org.apache.hadoop.http.HttpServer:
> HttpServer.start() threw a non Bind IOException****
>
> 2012-02-16 14:59:25,162 ERROR org.apache.hadoop.hdfsproxy.HdfsProxy:
> java.io.IOException: !JsseListener: java.lang.NullPointerException****
>
>        at
> org.mortbay.jetty.security.SslSocketConnector.newServerSocket(SslSocketConnector.java:516)
> ****
>
>        at
> org.mortbay.jetty.bio.SocketConnector.open(SocketConnector.java:73)****
>
>        at org.apache.hadoop.http.HttpServer.start(HttpServer.java:581)****
>
>        at org.apache.hadoop.hdfsproxy.HdfsProxy.start(HdfsProxy.java:84)**
> **
>
>        at
> org.apache.hadoop.hdfsproxy.HdfsProxy.createHdfsProxy(HdfsProxy.java:135)*
> ***
>
>        at org.apache.hadoop.hdfsproxy.HdfsProxy.main(HdfsProxy.java:141)**
> **
>
> ** **
>
> Any  ideas how to fix it ?****
>
> ** **
>
> ** **
>
> *From:* Denny Ye [mailto:[EMAIL PROTECTED]]
> *Sent:* Friday, February 17, 2012 7:40 AM
> *To:* [EMAIL PROTECTED]; Steve Lewis
> *Subject:* Re: facing issues in HDFSProxy****
>
> ** **
>
> Sure, it's the temporary code, you can delete that line.****
>
> ** **
>
> -Regards****
>
> Denny Ye****
>
> 2012/2/16 Stuti Awasthi <[EMAIL PROTECTED]>****
>
> Thanks Denny,****
>
>  ****
>
> Commenting below line in HDFSProxy.java class and rebuilding it . Will
> this help ?****
>
>
> sslConf.set("proxy.http.test.listener.addr",conf.get("proxy.http.test.listener.addr"));
> ****
>
>  ****
>
> Thanks****
>
>  ****
>
> *From:* Denny Ye [mailto:[EMAIL PROTECTED]]
> *Sent:* Thursday, February 16, 2012 2:27 PM
> *To:* [EMAIL PROTECTED]
> *Subject:* Re: facing issues in HDFSProxy****
>
>  ****
>
> In my local Hadoop version, I saw the temporary code with inexistent
> property name.****
>
> Hashtable does not accept 'null' as the normal value. ****
>
> It's the mistake of unit testing****
>
>  ****
>
> -Regards****
>
> Denny Ye****
>
> 2012/2/16 Stuti Awasthi <[EMAIL PROTECTED]>****
>
> Hi all,****
>
> Any pointers for this ?****
>
>  ****
>
> *From:* Stuti Awasthi
> *Sent:* Wednesday, February 15, 2012 5:53 PM
> *To:* [EMAIL PROTECTED]
> *Subject:* facing issues in HDFSProxy****
>
>  ****
>
> Hi,****
>
> I am using Hadoop 1.0.0 and want to try HDFSProxy . Following:****
>
>
> http://hadoop.apache.org/hdfs/docs/r0.21.0/hdfsproxy.html#Jetty-based+Installation+and+Configuration
> ****
>
>  ****
>
> When I run start-hdfsproxy.sh script I get following error in logs :****
>
> ************************************************************/****

Harsh J
Customer Ops. Engineer
Cloudera | http://tiny.cloudera.com/about