Hi Sameer,
Thanks for your valuable instructions. yes I m pretty much looking forward for that. Is there any way also to find out study where it tells what advantages company made after implementing HADOOP? Well this is a part of my presentation. Once again thank you so much. Hope to see you soon. Regards, Ajit Deshpande United Software Associates Pvt. Ltd. Pune, India Phone (India Lines): (91) 020-66813800 Phone (US Lines): 1-718-412-9731, 1-718-502-6816, 1-718-502-6817 Extn: 3885 www.usain.com <http://www.usain.com/> From: Sameer Farooqui [mailto:sam...@hortonworks.com] Sent: Friday, February 24, 2012 3:30 PM To: hdfs-user@hadoop.apache.org Subject: Re: Hi Hi Ajit, Once you're comfortable with HDFS+MapReduce from Harsh's links, you may want to specifically check out HBase, the Hadoop NoSQL Database. -- Sameer Farooqui Systems Architect / Hortonworks On Sat, Feb 18, 2012 at 2:26 AM, Harsh J <ha...@cloudera.com> wrote: 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 <ajit.deshpa...@usain.com> 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 <http://www.usain.com/> From: Stuti Awasthi [mailto:stutiawas...@hcl.com] Sent: Friday, February 17, 2012 10:22 AM To: hdfs-user@hadoop.apache.org; Steve Lewis Subject: RE: facing issues in HDFSProxy After I commented line "sslConf.set("proxy.http.test.listener.addr",conf.get("proxy.http.test.liste ner.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(SslSocketConne ctor.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:denny...@gmail.com] Sent: Friday, February 17, 2012 7:40 AM To: hdfs-user@hadoop.apache.org; 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 <stutiawas...@hcl.com> 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.listen er.addr")); Thanks From: Denny Ye [mailto:denny...@gmail.com] Sent: Thursday, February 16, 2012 2:27 PM To: hdfs-user@hadoop.apache.org 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 <stutiawas...@hcl.com> Hi all, Any pointers for this ? From: Stuti Awasthi Sent: Wednesday, February 15, 2012 5:53 PM To: hdfs-user@hadoop.apache.org 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+Instal lation+and+Configuration When I run start-hdfsproxy.sh script I get following error in logs : ************************************************************/ 2012-02-15 17:32:02,676 INFO org.apache.hadoop.hdfsproxy.HdfsProxy: HDFS NameNode is at: namenode:54310 2012-02-15 17:32:02,677 ERROR org.apache.hadoop.hdfsproxy.HdfsProxy: java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:411) at java.util.Properties.setProperty(Properties.java:160) at org.apache.hadoop.conf.Configuration.set(Configuration.java:437) at org.apache.hadoop.hdfsproxy.HdfsProxy.initialize(HdfsProxy.java:63) at org.apache.hadoop.hdfsproxy.HdfsProxy.<init>(HdfsProxy.java:44) at org.apache.hadoop.hdfsproxy.HdfsProxy.createHdfsProxy(HdfsProxy.java:135) at org.apache.hadoop.hdfsproxy.HdfsProxy.main(HdfsProxy.java:142) After googling around I got this Jira "https://issues.apache.org/jira/browse/HADOOP-5432"; Should I apply this patch to fix the issue ? Please suggest Regards, Stuti Awasthi HCL Comnet Systems and Services Ltd F-8/9 Basement, Sec-3,Noida. _____ ::DISCLAIMER:: ---------------------------------------------------------------------------- ------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. ---------------------------------------------------------------------------- ------------------------------------------- -- Harsh J Customer Ops. Engineer Cloudera | http://tiny.cloudera.com/about
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