Hadoop Users Group (HUG) Chennai

SequenceFile Input format not recognized in Oozie workflow.xml?

Oozie

Hi.. Anybody can help me with the below issue I have ? http://stackoverflow.com/questions/26322498/

10/13/14

Krishna, … Aravind3

10/12/14

Urgent How to Increase the REDUCERS performance in Pig

Adding few more to Senthil's comment, Also it depends on the cluster size ... What is the size of

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Urgent How to Increase the REDUCERS performance in Pig

Performance

Adding few more to Senthil's comment, Also it depends on the cluster size ... What is the size of

10/12/14

Sivaji

10/6/14

How can i identified Best number of Mappers and Reducers in my cluster

Hi Every one, In my organisation we are using 6 node cluster, i am running some pig scripts on more

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How can i identified Best number of Mappers and Reducers in my cluster

Hi Every one, In my organisation we are using 6 node cluster, i am running some pig scripts on more

10/6/14

Sivaji, … Subrata Biswas5

10/7/14

Want to increase no of Maps and Reducers in PIG

Hi Sivaji, You can not set Number of mappers, it depends on no# of input Split/Block size. if your

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Want to increase no of Maps and Reducers in PIG

Performance

Hi Sivaji, You can not set Number of mappers, it depends on no# of input Split/Block size. if your

10/7/14

santhosh oruganti

7/5/14

Java.Net.connection Refused

When I am running sample program ie word count or pi program using hadoop version 2.2.0 through

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Java.Net.connection Refused

When I am running sample program ie word count or pi program using hadoop version 2.2.0 through

7/5/14

Mahesh Nair, Subrata Biswas3

7/29/14

Accelerate MapReduce development using Jumbune, an all in one open source tool for hadoop

Hi Mahesh, Does it work for hadoop 2 also. Couple of questions- 1. Is it agent less? 2. how does it

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Accelerate MapReduce development using Jumbune, an all in one open source tool for hadoop

Hi Mahesh, Does it work for hadoop 2 also. Couple of questions- 1. Is it agent less? 2. how does it

7/29/14

Piyush Pawar

5/27/14

jps gives main class information unavailable

Hello, I suffered from this problem thst when i hit jps command it gives I am using hadoop-1.2.1 on

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jps gives main class information unavailable

Hello, I suffered from this problem thst when i hit jps command it gives I am using hadoop-1.2.1 on

5/27/14

Piyush Pawar, Senthil Kumar7

4/26/14

Error while running program in hadoop

I'm using Hadoop-1.2.1 on ubuntu with eclipse-kepler as IDE On 4/26/14, piyush pawar <

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Jobs

Error while running program in hadoop

I'm using Hadoop-1.2.1 on ubuntu with eclipse-kepler as IDE On 4/26/14, piyush pawar <

4/26/14

lakshminarayan, Sb Gowtham2

4/7/14

Namenode and JobTracker

Hi lakshminarayan If your cluster is not big enough (thousands of nodes) then there should be no

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Hi lakshminarayan If your cluster is not big enough (thousands of nodes) then there should be no

Namenode and JobTracker

4/7/14

Sanjay Bhosale, Vallinayagam3

2/19/14

Is it possible to write custom udf for group by clause in Pig

I want to compare the two records which are ssdeep and then according to percentage in match i need

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Is it possible to write custom udf for group by clause in Pig

I want to compare the two records which are ssdeep and then according to percentage in match i need

2/19/14

jaikumar

12/11/13

Hadoop 2 MR error

Hi , In YARN multinode cluster i am getting following error. Help me to solve this. 13/12/11 12:55:00

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Hi , In YARN multinode cluster i am getting following error. Help me to solve this. 13/12/11 12:55:00

Hadoop 2 MR error

12/11/13

sorna lingam, Ashwanth Kumar2

12/3/13

how to use Job.KillTask in mapper program

Mapper upon uncaught exceptions fail, you don't need to catch the exception in the Mapper and

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how to use Job.KillTask in mapper program

Mapper upon uncaught exceptions fail, you don't need to catch the exception in the Mapper and

12/3/13

sorna lingam

11/13/13

Map reduce on multiple clusters

Hi all Im having two clusters [windows] DEV140 and DEV144 . Where DEV144 is master and DEV140 is

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Map reduce on multiple clusters

Hi all Im having two clusters [windows] DEV140 and DEV144 . Where DEV144 is master and DEV140 is

11/13/13

Senthil Kumar, … Anooj Prabaharan16

1/29/14

Hadoop 2 is Now GA !!!!!

Hi can you please send the steps for hadoop 2 cluster... i get error like dut7: # A fatal error has

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Hi can you please send the steps for hadoop 2 cluster... i get error like dut7: # A fatal error has

Hadoop 2 is Now GA !!!!!

1/29/14

Prasad

6/21/13

BulkOutputFormat to support Composite Keys in Cassandra

Hi Guys, Anyone tried to create a mapreduce custom bulk output format to support composite keys with

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Cassandra

BulkOutputFormat to support Composite Keys in Cassandra

Hi Guys, Anyone tried to create a mapreduce custom bulk output format to support composite keys with

6/21/13

David Gkogkritsiani, Ashwanth Kumar2

6/4/13

Create Map/Reduce jobs

Does the second job depend on the output of the first job? For 1, you can achieve the solution in a

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Jobs

Does the second job depend on the output of the first job? For 1, you can achieve the solution in a

Create Map/Reduce jobs

6/4/13

Amith Kumar

5/31/13

Eclipse Plugin GitHub Repo

Hi Guys, Building Eclipse Plugin for hadoop version is a headache for beginners. There are many

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Eclipse Plugin GitHub Repo

Hi Guys, Building Eclipse Plugin for hadoop version is a headache for beginners. There are many

5/31/13

Amith Kumar, Srinivasan Ramalingam3

5/21/13

Hadoop Report Generating Tool

actually crux quaeries HBase to generate report.. does it is queries hdfs and generate report?

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Hadoop Report Generating Tool

actually crux quaeries HBase to generate report.. does it is queries hdfs and generate report?

5/21/13

Amith Kumar, … Chandra Reddy4

5/21/13

hadoop output visualization

Hi, You can use the Hive - Pentaho integration. thanks Chandra On Tue, May 21, 2013 at 4:26 AM,

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hadoop output visualization

Hi, You can use the Hive - Pentaho integration. thanks Chandra On Tue, May 21, 2013 at 4:26 AM,

5/21/13

David Gkogkritsiani

4/24/13

How do I read / download webpage content somewhere locally on HDD (text only, not Ima

Hi all, I have undertaken my diploma thesis on Hadoop MapReduce and I have been requested to I do an

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BigData

How do I read / download webpage content somewhere locally on HDD (text only, not Ima

Hi all, I have undertaken my diploma thesis on Hadoop MapReduce and I have been requested to I do an

4/24/13

Rajasri, Ashwanth Kumar5

1/29/13

copying a text file with integers to all the data nodes in the cluster

Thank u :) Will try it out! Regards, Rajasri.J On Tue, Jan 29, 2013 at 9:26 PM, Ashwanth Kumar <

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copying a text file with integers to all the data nodes in the cluster

Thank u :) Will try it out! Regards, Rajasri.J On Tue, Jan 29, 2013 at 9:26 PM, Ashwanth Kumar <

1/29/13

ArunDhaJ, Ashwanth Kumar3

1/23/13

Importing data into HBase table with MapReduce

Hi Ashwanth, Thanks for your elaborate response. You have given me a good point to rethink about the

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HBase

Importing data into HBase table with MapReduce

Hi Ashwanth, Thanks for your elaborate response. You have given me a good point to rethink about the

1/23/13

Senthil Kumar, … Srinivasan Ramalingam12

2/4/13

MInutes of January User Group Meet & FeedBack & Demo Code

Hi senthil, when will our next meetup date.i really expected this meetup.can you please share the

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MInutes of January User Group Meet & FeedBack & Demo Code

Hi senthil, when will our next meetup date.i really expected this meetup.can you please share the

2/4/13

kumar vaibhav, Senthil Kumar4

1/3/13

Huge Datasets and some POC ideas to look at

@Senthil - Still trying to figure out what to do. Hope to finalize something before the meet.

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Huge Datasets and some POC ideas to look at

@Senthil - Still trying to figure out what to do. Hope to finalize something before the meet.

1/3/13

Senthil Kumar, … Nagarajan B18

12/29/12

January Hadoop Users Group Meet - schedule and Agenda????

Hi Senthil, I would like to suggest a simple use case.. Its all about maintaining a Global Chip card.

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January Hadoop Users Group Meet - schedule and Agenda????

Hi Senthil, I would like to suggest a simple use case.. Its all about maintaining a Global Chip card.

12/29/12

Rajasri, … Subu24

12/29/12

installation of hadoop

Thank u sir...Mine is only 512MB...Heard that wont be enuf to set up a node in hadoop... Regards,

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Thank u sir...Mine is only 512MB...Heard that wont be enuf to set up a node in hadoop... Regards,

installation of hadoop

12/29/12

Senthil Kumar

10/3/12

Project Serengeti: Virtual Elephant in your Datacenter

Hi All Recently Some of friends were talking about hadoop in virtualized environment. I thought i

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Project Serengeti: Virtual Elephant in your Datacenter

Hi All Recently Some of friends were talking about hadoop in virtualized environment. I thought i

10/3/12

Priya Chatterjee, … Senthil Kumar11

4/4/13

Performance tuning in Map Reduce

sorry for delayed reply reply.... You can set in mapred-site.xml or you can set per job as part of

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Performance tuning in Map Reduce

sorry for delayed reply reply.... You can set in mapred-site.xml or you can set per job as part of

4/4/13

krishna chaitanya, … Senthil Kumar9

11/22/12

Intro to MapReduce

@Vaibhav Sorry for the delayed reply. We will discuss the same in presence with other members during

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