@Si    Try below command   hdfs dfsadmin -Dfs.defaultFS=hdfs://<name service> -fetchImage /tmp   Make sure the name service configs are already in place.   The general command line syntax is bin/hadoop command [genericOptions] [commandOptions]   Generic options supported are -conf <configuration file> specify an application configuration file -D <property=value> use value for given property -fs <local|namenode:port> specify a namenode ... View more

Will formatting zkfc and restarting namenode work as this issue is basically due to communication failure between HealthcheckRPC of zkfc and local namenode. ... View more

@sipocootap2  Unfortunately, you cannot disallow snapshots in a snapshottable directory that already has snapshots! Yes, you will have to list and delete the snapshot even if it contains subdirs you only pass the root snapshot in the hdfs dfs -deleteSnapshot command. If you had an  $ hdfs dfs -ls /app/tomtest/.snapshot Found 2 items drwxr-xr-x - tom developer 0 2021-07-26 23:14 /app/tomtest/.snapshot/sipo/work/john drwxr-xr-x - tom developer 0 2021-07-26 23:14 /app/tomtest/.snapshot/tap2/work//peter You would simply delete the snapshots like  $ hdfs dfs -deleteSnapshot /app/tomtest/ sipo $ hdfs dfs -deleteSnapshot /app/tomtest/ tap2   ... View more

Hi @kingpin. Thanks for the reply. Is there an official document that "/getimage" is deprecated? Cause I couldn't find it. When I run "hdfs dfsadmin -fetchImage" command, it also calls the same curl command. I could get fsimage with hdfs command, but I want to figure out the reason why curl fails. ... View more

What if there are multiple namespaces with multiple namenodes? `hdfs dfsadmin -fetchImage` command only reads from the default namespace. ... View more

After decommissioning, recommission the nodemanager and then start it again. ... View more

Hi @sipocootap2    Answered it here - https://community.cloudera.com/t5/Support-Questions/How-can-I-get-fsimage-with-curl-command/m-p/314859/highlight/false#M226223   cheers, ... View more

I solved this referring to https://storm.apache.org/releases/current/Running-topologies-on-a-production-cluster.html.   After editting pom.xml, I ran `mvn assembly:assembly`.   Then    storm jar ./WordCount-1.0-SNAPSHOT.jar com.microsoft.example.WordCountTopology WordCountTopology   ... View more

In my case, I had a wrong `hadoop.registry.dns.bind-address` value in /etc/hadoop/conf/yarn-site.xml.   It should have been 0.0.0.0, but there was another address. ... View more