What are some alternatives?
When comparing Apache Chukwa and Google Cloud Dataflow, you can also consider the following products
Hadoop HDFS - The Apache HDFS is a distributed file system that makes it possible to scale a single Apache Hadoop cluster to hundreds (and even thousands) of nodes.
Amazon EMR - Amazon Elastic MapReduce is a web service that makes it easy to quickly process vast amounts of data.
Google BigQuery - A fully managed data warehouse for large-scale data analytics.