smengcl commented on issue #9: HDDS-2240. Command line tool for OM Admin URL: https://github.com/apache/hadoop-ozone/pull/9#issuecomment-546128373 1. Compilation passed with `mvn clean install -DskipTests=true -Dmaven.javadoc.skip=true` 2. Checked `./hadoop-ozone/dist/target/ozone-0.5.0-SNAPSHOT/bin/ozone`, `admin` command shows up: ``` Client Commands: admin Ozone admin tool ``` 3. Ran `ozone admin om getserviceroles --om-service-id=id1` in a `docker-compose` cluster with profile `compose/ozone-om-ha/`. It succeeded on `om1` but throws this scary `protobuf.ServiceException`: ``` bash-4.2$ ozone admin om getserviceroles --om-service-id=id1 com.google.protobuf.ServiceException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ozone.om.exceptions.NotLeaderException): OM om2 is not the leader. Suggested leader is om3 at org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.createNotLeaderException(OzoneManagerProtocolServerSideTranslatorPB.java:192) at org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitReadRequestToOM(OzoneManagerProtocolServerSideTranslatorPB.java:178) at org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.processRequest(OzoneManagerProtocolServerSideTranslatorPB.java:110) at org.apache.hadoop.hdds.server.OzoneProtocolMessageDispatcher.processRequest(OzoneProtocolMessageDispatcher.java:72) at org.apache.hadoop.ozone.protocolPB.OzoneManagerProtocolServerSideTranslatorPB.submitRequest(OzoneManagerProtocolServerSideTranslatorPB.java:100) at org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos$OzoneManagerService$2.callBlockingMethod(OzoneManagerProtocolProtos.java) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876) at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/javax.security.auth.Subject.doAs(Subject.java:423) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682) , while invoking $Proxy16.submitRequest over nodeId=om2,nodeAddress=om2:9862 after 1 failover attempts. Trying to failover immediately. om1 : FOLLOWER om2 : FOLLOWER om3 : LEADER ``` The same exception shows up when I'm running the same command on `om2` or `om3`. Looks like it is always trying to contact `om2`, which is not the leader in our case. Can we suppress this fail over message unless the command fails?
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