Index: src/java/org/apache/hadoop/hbase/HRegionServer.java =================================================================== --- src/java/org/apache/hadoop/hbase/HRegionServer.java (revision 647977) +++ src/java/org/apache/hadoop/hbase/HRegionServer.java (working copy) @@ -1040,7 +1040,9 @@ } break; } catch(IOException e) { - LOG.warn("error telling master we are up", e); + LOG.warn("Check your DNS configuration so that all region servers are" + + "reporting their true IPs and not 127.0.0.1. Otherwise, this" + + "problem will resolve itself in ${lease-timeout} seconds.", e); sleeper.sleep(lastMsg); continue; }