I could share some metrics about Alibaba Cloud EMR clusters. The ratio of Hadoop2 VS Hadoop3 is 1:3.
Best, Yang On Thu, Dec 28, 2023 at 8:16 PM Martijn Visser <martijnvis...@apache.org> wrote: > Hi all, > > I want to get some insights on how many users are still using Hadoop 2 > vs how many users are using Hadoop 3. Flink currently requires a > minimum version of Hadoop 2.10.2 for certain features, but also > extensively uses Hadoop 3 (like for the file system implementations) > > Hadoop 2 has a large number of direct and indirect vulnerabilities > [1]. Most of them can only be resolved by dropping support for Hadoop > 2 and upgrading to a Hadoop 3 version. This thread is primarily to get > more insights if Hadoop 2 is still commonly used, or if we can > actually discuss dropping support for Hadoop 2 in Flink. > > Best regards, > > Martijn > > [1] > https://mvnrepository.com/artifact/org.apache.hadoop/hadoop-common/2.10.2 >
