Antonenko Alexander created AMBARI-20376: --------------------------------------------
Summary: While Moving Namenode via Move Master wizard, datanodes reported as down Key: AMBARI-20376 URL: https://issues.apache.org/jira/browse/AMBARI-20376 Project: Ambari Issue Type: Bug Components: ambari-web Affects Versions: 2.5.0 Reporter: Antonenko Alexander Assignee: Antonenko Alexander Priority: Critical Fix For: 2.5.0 While Moving Namenode via Move Master wizard, datanodes reported as down while starting ATS. Seeing this in a couple of splits today. ATS fails to start showing there are no live datanodes {code} { "RemoteException": { "exception": "RetriableException", "javaClassName": "org.apache.hadoop.ipc.RetriableException", "message": "org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot set permission for /ats/done. Name node is in safe mode.\nThe reported blocks 934 has reached the threshold 0.9900 of total blocks 934. The number of live datanodes 3 has reached the minimum number 0. In safe mode extension. Safe mode will be turned off automatically in 21 seconds." } } {code} The step before ATS start, starts datanode explicitly. On retry ATS will possibly come up. But no retries were needed before -- This message was sent by Atlassian JIRA (v6.3.15#6346)