+1 (non-binding) Put 2.4.0 to a 15 node cluster (3 masters, 12 region servers), configured HBASE-18070 for both server and client. Server side, there are 1 primary meta region and 3 meta replica regions. Run itbll with serverKilling chaos monkey and added 3 billion rows. itbll finished successfully (verified). Found the following issue
[1] HBASE-25358 <https://issues.apache.org/jira/browse/HBASE-25358> meta replica regions are assigned to the same region server during SCP. This issue is not a new issue. When SCP runs, it may assign replica regions to the same region server, later balancer run will assign regions to different region servers. ./dev-support/hbase-vote.sh --source https://dist.apache.org/repos/dist/dev/hbase/2.4.0RC1 -P runSmallTests Result: * Signature: ok * Checksum : ok * Rat check (1.8.0_242): ok - mvn clean apache-rat:check * Built from source (1.8.0_242): ok - mvn clean install -DskipTests * Unit tests pass (1.8.0_242): ok - mvn package -P runSmallTests
