https://community.cloudera.com/t5/Support-Questions/Region-stuck-in-transition-various-versions-expected/m-p/90425#M55316 Look for an exception in logs preceding the "Failed open of region="<BR />handling failure message on your RegionServer. One situation may be that a<BR />HFile is un-openable under the region (for varied reasons), and will<BR />require being sidelined (removed away) for bringing the region back online.<BR /> Wed, 15 May 2019 02:37:44 GMT Harsh J 2019-05-15T02:37:44Z