Hadoop 3 : how to configure / enable erasure coding?
问题 I'm trying to setup an Hadoop 3 cluster. Two questions about the Erasure Coding feature : How I can ensure that erasure coding is enabled ? Do I still need to set the replication factor to 3 ? Please indicate the relevant configuration properties related to erasure coding/replication, in order to get the same data security as Hadoop 2 (replication factor 3) but with the disk space benefits of Hadoop 3 erasure coding (only 50% overhead instead of 200%). 回答1: In Hadoop3 we can enable Erasure