Hello I want to discuss this with the wider community. In HDFS-15624 (fix the function of setting quota by storage type), A new layout version was added NVDIMM_SUPPORT(-66, -61, "Support NVDIMM storage type"); This was added for 3.4.0 (trunk)
However, there's another jira HDFS-15566 (NN restart fails after RollingUpgrade from 3.1.3/3.2.1 to 3.3.0) SNAPSHOT_MODIFICATION_TIME(-66, -61, "Support modification time for snapshot"); where Brahma wanted to add a new layout version in branch-3.3 (3.3.1). The patch got stalled awhile ago and I'm trying to commit it in preparation of 3.3.1 release. However, both new layout versions conflict because they intend to use the new same version id. We can't release 3.3.1 without HDFS-15566 but we can't use layout id -66 because of HDFS-15624. I propose: revert HDFS-15624 (NVDIMM_SUPPORT), commit HDFS-15566 (SNAPSHOT_MODIFICATION_TIME) re-work on HDFS-15624 but with layout version id -67 Thoughts? Wei-Chiu
