Flink, Spark, Samza, Kafka (Streams). All under the Apache umbrella. All doing similar things. Competitors. There is a risk of spreading resources too thin on the space, there is a risk that some of the projects will be guided towards sub-optimal objectives so as not to compete too directly with others projects in the portfolio, and there is clear branding dilution. This is made worse by the fact that all the projects use the JVM, eroding differentiation even further. And there is concentration risk for Apache making tons of bets in the same space as opposed to diversifying across sectors. Just a lay observation as I happen to have been perusing the space for a financial markets compute graph I am building, and was surprised by the lack of options outside of Apache, and in particular, away from the JVM.
