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Other NoSQL questions, tools or topics

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With faster option Flink being available for streaming is spark being used only for batch processing

2 replies

EDB to Oracle db link isolation level problem

3 replies

Other Big Data

Installing complex tools

6 replies

Synching/mirroring two databases remote & local in real time/near real time. Solution?

8 replies

Need help for right choosing open source column-oriented DB

4 replies

While reading nested JSON using spark.read.json everything is coming in a single row

0 replies

The Data Engineer self-study plan, Part 1 - Java.

0 replies

Java-Kafka application or Java-Kaka-Spark application for reading a file and writing to kafka topic?

0 replies

How does input and output specified in EMR step link to input and output path inside the program

0 replies

In what kind of cases should EMR be chosen over Databricks which is the faster option ?

0 replies

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Best this month

EDB to Oracle db link isolation level problem

3 replies

More »
Other Big Data Forum at JavaRanch

EDB to Oracle db link isolation level problem

2 weeks ago 3 replies

While reading nested JSON using spark.read.json everything is coming in a single row

1 month ago 0 replies

Other Big Data

Installing complex tools

3 months ago 6 replies

Synching/mirroring two databases remote & local in real time/near real time. Solution?

4 months ago 8 replies

The Data Engineer self-study plan, Part 1 - Java.

5 months ago 0 replies

Need help for right choosing open source column-oriented DB

5 months ago 4 replies

Java-Kafka application or Java-Kaka-Spark application for reading a file and writing to kafka topic?

6 months ago 0 replies

With faster option Flink being available for streaming is spark being used only for batch processing

8 months ago 2 replies

How does input and output specified in EMR step link to input and output path inside the program

8 months ago 0 replies

In what kind of cases should EMR be chosen over Databricks which is the faster option ?

8 months ago 0 replies

Spring

Kafka Listener issues giving null values

9 months ago 4 replies

Other Big Data

Installing python on Apache Cassandra node

1 year ago 1 reply

Three queries

1 year ago 1 reply

How does Cassandra have sql like queries when it is a nosql db

1 year ago 4 replies

Other Big Data

SQL

1 year ago 1 reply

Does Python execution being slower than Java, affect its execution time when processing Big Data

1 year ago 19 replies

stored procedure with Oracle

2 years ago 1 reply

What is the relationship between Hadoop and ETL ?

2 years ago 13 replies

What makes the number of output files in pyspark output keep varying

2 years ago 0 replies

Where is the SQL Server Database Trigger Wizard or Dialog Box?

2 years ago 0 replies

Kafka Structured streaming application throwing IllegalStateException when there is a gap in the off

2 years ago 0 replies

Is Kafka Connect not based on producer subscriber model unlike Kafka?

2 years ago 0 replies

What Big Data fundamentals should one learn when big data technologies will keep changing

2 years ago 0 replies

Aggregated results without duplicates on multiple columns each filtered differently

2 years ago 0 replies

When does in memory code get triggered in dataframes as compared to action call in RDD

2 years ago 0 replies

When to use Pandas dataframe instead of PySpark dataframe?

2 years ago 0 replies

Compare rows within a group in a dataframe

2 years ago 0 replies

AcknowledgingMessageListener vs @KafkaListener

2 years ago 0 replies

Is Kafka like an asynchronous queue which gives fast and fault tolerant performance with huge data?

2 years ago 0 replies

If one cannot query from inside the JSON using DynamoDb then what is the use of storing JSON docs?

2 years ago 3 replies

How to query in DynamoDb using a parameter which is a field inside JSON?

2 years ago 0 replies

If already using AWS in the project for what kind of use case would one choose DynamoDB over MongoDb

2 years ago 0 replies

Why is RDD called fundamental data structure of Spark when Dataframes and Datasets don't use RDDs

2 years ago 1 reply

Is Parquet used only as an intermediate format as it looks more machine readable than human readable

2 years ago 10 replies

For creating Spark cluster on EC2 without hadoop is there some tool like Cloudera Manager to ease it

2 years ago 0 replies

How does lazy evaluation happen in dataframes in Spark which do not have actions unlike RDDs

2 years ago 2 replies

Other Big Data

Should I learn SQL?

4 years ago 5 replies
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Other Big Data

Best this year

With faster option Flink being available for streaming is spark being used only for batch processing

EDB to Oracle db link isolation level problem

Installing complex tools

Synching/mirroring two databases remote & local in real time/near real time. Solution?

Need help for right choosing open source column-oriented DB

While reading nested JSON using spark.read.json everything is coming in a single row

The Data Engineer self-study plan, Part 1 - Java.

Java-Kafka application or Java-Kaka-Spark application for reading a file and writing to kafka topic?

How does input and output specified in EMR step link to input and output path inside the program

In what kind of cases should EMR be chosen over Databricks which is the faster option ?

Best this month

EDB to Oracle db link isolation level problem

Other Big Data Forum at JavaRanch

EDB to Oracle db link isolation level problem

While reading nested JSON using spark.read.json everything is coming in a single row

Installing complex tools

Synching/mirroring two databases remote & local in real time/near real time. Solution?

The Data Engineer self-study plan, Part 1 - Java.

Need help for right choosing open source column-oriented DB

Java-Kafka application or Java-Kaka-Spark application for reading a file and writing to kafka topic?

With faster option Flink being available for streaming is spark being used only for batch processing

How does input and output specified in EMR step link to input and output path inside the program

In what kind of cases should EMR be chosen over Databricks which is the faster option ?

Kafka Listener issues giving null values

Installing python on Apache Cassandra node

Three queries

How does Cassandra have sql like queries when it is a nosql db

SQL

Does Python execution being slower than Java, affect its execution time when processing Big Data

stored procedure with Oracle

What is the relationship between Hadoop and ETL ?

What makes the number of output files in pyspark output keep varying

Where is the SQL Server Database Trigger Wizard or Dialog Box?

Kafka Structured streaming application throwing IllegalStateException when there is a gap in the off

Is Kafka Connect not based on producer subscriber model unlike Kafka?

What Big Data fundamentals should one learn when big data technologies will keep changing

Aggregated results without duplicates on multiple columns each filtered differently

When does in memory code get triggered in dataframes as compared to action call in RDD

When to use Pandas dataframe instead of PySpark dataframe?

Compare rows within a group in a dataframe

AcknowledgingMessageListener vs @KafkaListener

Is Kafka like an asynchronous queue which gives fast and fault tolerant performance with huge data?

If one cannot query from inside the JSON using DynamoDb then what is the use of storing JSON docs?

How to query in DynamoDb using a parameter which is a field inside JSON?

If already using AWS in the project for what kind of use case would one choose DynamoDB over MongoDb

Why is RDD called fundamental data structure of Spark when Dataframes and Datasets don't use RDDs

Is Parquet used only as an intermediate format as it looks more machine readable than human readable

For creating Spark cluster on EC2 without hadoop is there some tool like Cloudera Manager to ease it

How does lazy evaluation happen in dataframes in Spark which do not have actions unlike RDDs

Should I learn SQL?

Databases