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Migrating Apache Flume Flows to Apache NiFi: Kafka Source to HDFS / Kudu / File / Hive

Migrating Apache Flume Flows to Apache NiFi: Kafka Source to HDFS / Kudu / File / Hive


This is one possible simple, fast replacement for "Flafka".




Consume / Publish Kafka And Store to Files, HDFS, Hive 3.1, Kudu



Consume Kafka Flow 



 Merge Records And Store As AVRO or ORC


Consume Kafka, Update Records via Machine Learning Models In CDSW And Store to Kudu



Source:  Apache Kafka Topics


You enter a few parameters and start ingesting data with or without schemas.   Apache Flume had no Schema support.   Flume did not support transactions.



Sink:   Files




Storing to files in files systems, object stores, SFTP or elsewhere could not be easier.  Choose S3, Local File System, SFTP, HDFS or wherever.

Sink:   Apache Kudu / Apache Impala



Storing to Kudu/Impala (or Parquet for that manner could not be easier with Apache NiFi).


Sink:   HDFS for Apache ORC Files


When completes, the ConvertAvroToORC and PutHDFS build the Hive DDL for you!  You can build the tables automagically with Apache NiFi if you wish.

CREATE EXTERNAL TABLE IF NOT EXISTS iotsensors
(sensor_id BIGINT, sensor_ts BIGINT, is_healthy STRING, response STRING, sensor_0 BIGINT, sensor_1 BIGINT,
sensor_2 BIGINT, sensor_3 BIGINT, sensor_4 BIGINT, sensor_5 BIGINT, sensor_6 BIGINT, sensor_7 BIGINT, sensor_8 BIGINT,
sensor_9 BIGINT, sensor_10 BIGINT, sensor_11 BIGINT)
STORED AS ORC
LOCATION '/tmp/iotsensors'





Sink: Kafka

Publishing to Kafka is just as easy!  Push records with schema references or raw data.  AVRO or JSON, whatever makes sense for your enterprise.

Write to data easily with no coding and no changes or redeploys for schema or schema version changes.
 Pick a Topic and Stream Data While Converting Types


Clean UI and REST API to Manage, Monitor, Configure and Notify on Kafka




Other Reasons to Use Apache NiFi Over Apache Flume

DevOps with REST API, CLI, Python API

Schemas!   We not only work with semi-structured, structured and unstructured data.  We are schema and schema version aware for CSV, JSON, AVRO, XML, Grokked Text Files and more. https://community.cloudera.com/t5/Community-Articles/Big-Data-DevOps-Apache-NiFi-HWX-Schema-Registry-Schema/ta-p/247963

Flume Replacement Use Cases Implemented in Apache NiFi

Sink/Source:   JMS

Source:   Files/PDF/PowerPoint/Excel/Word  Sink:  Files

Source:  Files/CSV  Sink:   HDFS/Hive/Apache ORC

Source:  REST/Files/Simulator   Sink:  HBase, Files, HDFS.    ETL with Lookups.

Flume Replacement - Lightweight Open Source Agents


If you need to replace local Log to Kafka agents or anything to Kafka or anything to anything with routing, transformation and manipulation.   You can use Edge Flow Manager deployed MiNiFi Agents available in Java and C++ versions.

References