Hello @WayneWang    As we haven't received any further Update, We are closing the Post assuming the issue was handled by the Steps shared above [1]. In HBase v1.x, We have limited choices with HBase v2.x using a new AssignmentManager (Details in HBASE-12439), which would assist in managing the RIT without ZooKeeper involvement.   Thanks for using Cloudera Community.   - Smarak   [1] https://community.cloudera.com/t5/Support-Questions/Hbase-How-to-fix-failed-regions/m-p/312263/highlight/true#M225066 ... View more