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Hadoop

grid/distributed database

Hadoop - Apache's distributed database

Hadoop Forum at JavaRanch

managed hadoop/hbase service

1 year ago 0 replies

mix and match of hbase-client with hbase older version

1 year ago 0 replies

What decides how many part files a sqoop import call creates?

1 year ago 1 reply

What is crawldb and how can I check that it is filled properly?

1 year ago 0 replies

Friendly active forum on Hadoop, Ambari, HDFS et cetera

1 year ago 2 replies

What dependency does Apache Spark have on Hadoop?

2 years ago 3 replies

While planning a Hadoop cluster, how to decide on the optimal number of nodes?

2 years ago 1 reply

While creating EMR cluster, when hadoop is selected is it mainly because of Hive

2 years ago 0 replies

Which components of Hadoop are still widely used considering the fall in popularity of Map reduce?

2 years ago 1 reply

Does the performance come down instead of going up after increasing nodes beyond a point in Hadoop?

2 years ago 0 replies

Are columnar DBs preferred to document DBs in cases demanding fast retrieval but not much querying?

3 years ago 2 replies

Is usage of hive mainly limited to running ad hoc queries for analysis?

3 years ago 0 replies

When ETL is done using Hive where does the transform part happen?

3 years ago 16 replies

Advantage to storing data row wise in Hbase tables as compared to Relational DB?

3 years ago 9 replies

Can we have more than 1 data node in pseudo distributed hadoop cluster?

3 years ago 0 replies

Will a node added to hadoop cluster while a hadoop job is running be used by the job?

3 years ago 0 replies

Is hive to be used in any other way also other than like query browser of SQL server?

3 years ago 0 replies

What exactly is the reason for problem if replication factor is more than the number of nodes

3 years ago 0 replies

Is it same in Hadoop to have two data nodes of 50 GB each and have 1 data node of 100 MB?

3 years ago 8 replies

Which Big Data technologies does Hadoop comprise of?

3 years ago 3 replies

What difference does it make that in hadoop 2, resource management handled by YARN

3 years ago 0 replies

Does Hbase not have fault tolerance given that it has single point of failure unlike Cassandra?

3 years ago 0 replies

Want to learn bigdata ,hadoop technology

3 years ago 3 replies

Is map reduce not used for any new code because of a faster option Apache Spark?

3 years ago 9 replies 2

Does any big data technology belong to hadoop ecosystem if it uses hdfs?

3 years ago 2 replies

Is Hive used only for running ad-hoc queries like one runs on SQL query browser?

3 years ago 0 replies

Is this the correct way to implement this hadoop map reduce program?

3 years ago 0 replies

Does YARN make any difference for the developer or it is just internal concept

3 years ago 0 replies

Why is C# not used much in Big data?

3 years ago 7 replies

Why was map reduce developed to reduce the parallely processed data based on common keys?

3 years ago 5 replies

Coding Question in Hadoop

3 years ago 5 replies

Which one of these is a more commonly accepted approach for hadoop cluster on cloud

3 years ago 0 replies

NodeManager NameNode ResourceManager DataNode SecondaryNameNode not running

3 years ago 15 replies

Can hadoop map reduce be used only for use cases where aggregation is required?

3 years ago 2 replies

Certification

3 years ago 6 replies

Will increasing the nodes keep on reducing the processing time in cluster?

3 years ago 0 replies

Checking NULLs across multiple columns, Hive

4 years ago 0 replies

Data Read functionality in HDFS

7 years ago 6 replies

what's Hadoop ?

13 years ago 5 replies

Hadoop

16 years ago 2 replies
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Hadoop

Hadoop Forum at JavaRanch

managed hadoop/hbase service

mix and match of hbase-client with hbase older version

What decides how many part files a sqoop import call creates?

What is crawldb and how can I check that it is filled properly?

Friendly active forum on Hadoop, Ambari, HDFS et cetera

What dependency does Apache Spark have on Hadoop?

While planning a Hadoop cluster, how to decide on the optimal number of nodes?

While creating EMR cluster, when hadoop is selected is it mainly because of Hive

Which components of Hadoop are still widely used considering the fall in popularity of Map reduce?

Does the performance come down instead of going up after increasing nodes beyond a point in Hadoop?

Are columnar DBs preferred to document DBs in cases demanding fast retrieval but not much querying?

Is usage of hive mainly limited to running ad hoc queries for analysis?

When ETL is done using Hive where does the transform part happen?

Advantage to storing data row wise in Hbase tables as compared to Relational DB?

Can we have more than 1 data node in pseudo distributed hadoop cluster?

Will a node added to hadoop cluster while a hadoop job is running be used by the job?

Is hive to be used in any other way also other than like query browser of SQL server?

What exactly is the reason for problem if replication factor is more than the number of nodes

Is it same in Hadoop to have two data nodes of 50 GB each and have 1 data node of 100 MB?

Which Big Data technologies does Hadoop comprise of?

What difference does it make that in hadoop 2, resource management handled by YARN

Does Hbase not have fault tolerance given that it has single point of failure unlike Cassandra?

Want to learn bigdata ,hadoop technology

Is map reduce not used for any new code because of a faster option Apache Spark?

Does any big data technology belong to hadoop ecosystem if it uses hdfs?

Is Hive used only for running ad-hoc queries like one runs on SQL query browser?

Is this the correct way to implement this hadoop map reduce program?

Does YARN make any difference for the developer or it is just internal concept

Why is C# not used much in Big data?

Why was map reduce developed to reduce the parallely processed data based on common keys?

Coding Question in Hadoop

Which one of these is a more commonly accepted approach for hadoop cluster on cloud

NodeManager NameNode ResourceManager DataNode SecondaryNameNode not running

Can hadoop map reduce be used only for use cases where aggregation is required?

Certification

Will increasing the nodes keep on reducing the processing time in cluster?

Checking NULLs across multiple columns, Hive

Data Read functionality in HDFS

what's Hadoop ?

Hadoop

Databases