Antonenko Alexander created AMBARI-20376:
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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
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