I have a similar problem with a filesystem/namenode is safemode because of underreplicated blocks. My problem is that the "hdfs dfs -setrep -w 3 /path/to/file" fails because the filesystem is in safemode. If I am in safemode because of underreplicated blocks and the command to fix that doesn't work if you're in safemode, what can you do? I've tried the command to leave safemode and it seems to work, but it goes back into safemode within a VERY short time. ... View more

@Jay Kumar SenSharma I've not had the best of luck with the move/migrate wizards. In this case, the wizard has stopped trying to shut down services. Since the wizard is running, I no longer have access to the Ambari UI. I managed to get past that part of the wizard by using "/usr/hdp/current/oozie-server/bin/oozied.sh stop" to stop the Oozie service (that's what the wizard was hanging on). The wizard completed and I then got to the manual steps. The first step: Copy the contents of /scratch/hadoop/hdfs/namesecondary,/hadoop/hdfs/namesecondary on the source host cg-hm10.ncsa.illinois.edu to /scratch/hadoop/hdfs/namesecondary,/hadoop/hdfs/namesecondary on the target host cg-hm16.ncsa.illinois.edu. isn't possible as the directory on cg-hm10 no longer exists. ... View more

@Jay Kumar SenSharma Step 1 of those instructions is "Ensure that all the HDFS Components are up and running". Given that the secondary namenode service cannot be brought up since the host cannot be booted, is there any chance the migration can be successful? ... View more

@yusaku, yes, they did. At some point, when it happens again, I may start another thread regarding why my ambari metrics server keeps dying. Its fairly annoying. ... View more

Yea! That worked. Thank you. ... View more

{ "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm09.ncsa.illinois.edu/host_components/APP_TIMELINE_SERVER", "HostRoles" : { "cluster_name" : "ROGERGPFS", "component_name" : "APP_TIMELINE_SERVER", "desired_stack_id" : "HDP-2.3", "desired_state" : "STARTED", "hdp_version" : "HDP-2.3.2.0-2602", "host_name" : "cg-hm09.ncsa.illinois.edu", "maintenance_state" : "ON", "service_name" : "YARN", "stack_id" : "HDP-2.3", "stale_configs" : false, "state" : "STARTED", "upgrade_state" : "NONE", "actual_configs" : { "accumulo-env" : { "default" : "version1460667914523" }, "accumulo-log4j" : { "default" : "version1460667914523" }, "accumulo-site" : { "default" : "version1460667914523" }, "ams-env" : { "default" : "version1" }, "ams-hbase-env" : { "default" : "version1" }, "ams-hbase-log4j" : { "default" : "version1" }, "ams-hbase-policy" : { "default" : "version1" }, "ams-hbase-security-site" : { "default" : "version1" }, "ams-hbase-site" : { "default" : "version1467740762357" }, "ams-log4j" : { "default" : "version1" }, "ams-site" : { "default" : "version1467740762357" }, "capacity-scheduler" : { "default" : "version1" }, "client" : { "default" : "version1460667914523" }, "cluster-env" : { "default" : "version1" }, "core-site" : { "default" : "version1484279982036" }, "falcon-env" : { "default" : "version1" }, "falcon-runtime.properties" : { "default" : "version1" }, "falcon-startup.properties" : { "default" : "version1" }, "gateway-log4j" : { "default" : "version1" }, "gateway-site" : { "default" : "version1" }, "hadoop-env" : { "default" : "version1" }, "hadoop-policy" : { "default" : "version1" }, "hbase-env" : { "default" : "version1" }, "hbase-log4j" : { "default" : "version1" }, "hbase-policy" : { "default" : "version1" }, "hbase-site" : { "default" : "version1" }, "hcat-env" : { "default" : "version1" }, "hdfs-log4j" : { "default" : "version1" }, "hdfs-site" : { "default" : "version1484262327604" }, "hive-env" : { "default" : "version1484280941838" }, "hive-exec-log4j" : { "default" : "version1" }, "hive-log4j" : { "default" : "version1" }, "hive-site" : { "default" : "version1484280941838" }, "hiveserver2-site" : { "default" : "version1" }, "knox-env" : { "default" : "version1" }, "ldap-log4j" : { "default" : "version1" }, "mapred-env" : { "default" : "version1" }, "mapred-site" : { "default" : "version1" }, "oozie-env" : { "default" : "version1442008913821" }, "oozie-log4j" : { "default" : "version1" }, "oozie-site" : { "default" : "version1484271458416" }, "pig-env" : { "default" : "version1" }, "pig-log4j" : { "default" : "version1" }, "pig-properties" : { "default" : "version1" }, "ranger-hbase-audit" : { "default" : "version1" }, "ranger-hbase-plugin-properties" : { "default" : "version1" }, "ranger-hbase-policymgr-ssl" : { "default" : "version1" }, "ranger-hbase-security" : { "default" : "version1" }, "ranger-hdfs-audit" : { "default" : "version1" }, "ranger-hdfs-plugin-properties" : { "default" : "version1" }, "ranger-hdfs-policymgr-ssl" : { "default" : "version1" }, "ranger-hdfs-security" : { "default" : "version1" }, "ranger-hive-audit" : { "default" : "version1" }, "ranger-hive-plugin-properties" : { "default" : "version1" }, "ranger-hive-policymgr-ssl" : { "default" : "version1" }, "ranger-hive-security" : { "default" : "version1" }, "ranger-knox-audit" : { "default" : "version1" }, "ranger-knox-plugin-properties" : { "default" : "version1" }, "ranger-knox-policymgr-ssl" : { "default" : "version1" }, "ranger-knox-security" : { "default" : "version1" }, "ranger-yarn-audit" : { "default" : "version1" }, "ranger-yarn-plugin-properties" : { "default" : "version1" }, "ranger-yarn-policymgr-ssl" : { "default" : "version1" }, "ranger-yarn-security" : { "default" : "version1" }, "spark-defaults" : { "default" : "version1" }, "spark-env" : { "default" : "version1" }, "spark-javaopts-properties" : { "default" : "version1" }, "spark-log4j-properties" : { "default" : "version1" }, "spark-metrics-properties" : { "default" : "version1" }, "sqoop-env" : { "default" : "version1" }, "ssl-client" : { "default" : "version1" }, "ssl-server" : { "default" : "version1" }, "tez-env" : { "default" : "version1" }, "tez-site" : { "default" : "version1" }, "topology" : { "default" : "version1" }, "users-ldif" : { "default" : "version1" }, "webhcat-env" : { "default" : "version1" }, "webhcat-log4j" : { "default" : "version1" }, "webhcat-site" : { "default" : "version1484280941838" }, "yarn-env" : { "default" : "version1484269362684" }, "yarn-log4j" : { "default" : "version1" }, "yarn-site" : { "default" : "version1484278518158" }, "zoo.cfg" : { "default" : "version1" }, "zookeeper-env" : { "default" : "version1" }, "zookeeper-log4j" : { "default" : "version1" } } }, "host" : { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm09.ncsa.illinois.edu" }, "component" : [ { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/services/YARN/components/APP_TIMELINE_SERVER", "ServiceComponentInfo" : { "cluster_name" : "ROGERGPFS", "component_name" : "APP_TIMELINE_SERVER", "service_name" : "YARN" } } ], "processes" : [ ] } ... 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Remember, you asked for it. 🙂 20 Jan 2017 15:27:44,017 ERROR [qtp-client-37739] AbstractResourceProvider:338 - Caught AmbariException when modifying a resource org.apache.ambari.server.AmbariException: Host Component cannot be removed, clusterName=ROGERGPFS, serviceName=YARN, componentName=APP_TIMELINE_SERVER, hostname=cg-hm09.ncsa.illinois.edu, request={ clusterName=ROGERGPFS, serviceName=YARN, componentName=APP_TIMELINE_SERVER, hostname=cg-hm09.ncsa.illinois.edu, desiredState=null, state=null, desiredStackId=null, staleConfig=null, adminState=null} at org.apache.ambari.server.controller.AmbariManagementControllerImpl.deleteHostComponents(AmbariManagementControllerImpl.java:2731) at org.apache.ambari.server.controller.internal.HostComponentResourceProvider$3.invoke(HostComponentResourceProvider.java:321) at org.apache.ambari.server.controller.internal.HostComponentResourceProvider$3.invoke(HostComponentResourceProvider.java:318) at org.apache.ambari.server.controller.internal.AbstractResourceProvider.modifyResources(AbstractResourceProvider.java:331) at org.apache.ambari.server.controller.internal.HostComponentResourceProvider.deleteResources(HostComponentResourceProvider.java:318) at org.apache.ambari.server.controller.internal.ClusterControllerImpl.deleteResources(ClusterControllerImpl.java:330) at org.apache.ambari.server.api.services.persistence.PersistenceManagerImpl.delete(PersistenceManagerImpl.java:111) at org.apache.ambari.server.api.handlers.DeleteHandler.persist(DeleteHandler.java:44) at org.apache.ambari.server.api.handlers.BaseManagementHandler.handleRequest(BaseManagementHandler.java:72) at org.apache.ambari.server.api.services.BaseRequest.process(BaseRequest.java:135) at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:105) at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseService.java:74) at org.apache.ambari.server.api.services.HostComponentService.deleteHostComponent(HostComponentService.java:203) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205) at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:540) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:715) at javax.servlet.http.HttpServlet.service(HttpServlet.java:770) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1496) {continued} ... View more

sorry if you saw the rest of the activity on this response. First, I posted the resultant output, but I did it as an answer. Given that it wasn't, I deleted it noticing only too late that I could have converted it to a comment. The next time I attempted to add the output, I managed to grab the wrong copy buffer (and wound up duplicating the original informational output from the GET command. So, I deleted that. Sigh. ... View more

#curl -u admin:<> -k -H "X-Requested-By: ambari" -X DELETE https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm09.ncsa.illinois.edu/host_components/APP_TIMELINE_SERVER { "status" : 500, "message" : "org.apache.ambari.server.controller.spi.SystemException: An internal system exception occurred: Host Component cannot be removed, clusterName=ROGERGPFS, serviceName=YARN, componentName=APP_TIMELINE_SERVER, hostname=cg-hm09.ncsa.illinois.edu, request={ clusterName=ROGERGPFS, serviceName=YARN, componentName=APP_TIMELINE_SERVER, hostname=cg-hm09.ncsa.illinois.edu, desiredState=null, state=null, desiredStackId=null, staleConfig=null, adminState=null}" } ... View more

Yeah. When I screw something up, I don't seem to do it by half measures. ... View more

However, I might have gotten what you want in a different manner: [root@cg-hm08 ~]# curl -i -uadmin:<> -k -H "X-Requested-By: ambari" -d '{"HostRoles": { "state": "STARTED"}}' -X GET 'https://localhost:8443/api/v1/clusters/ROGERGPFS/host_components?HostRoles/component_name=APP_TIMELINE_SERVER' HTTP/1.1 200 OK User: admin Set-Cookie: AMBARISESSIONID=1jmupkh1wyuoo8n3d84vc8zsc;Path=/;Secure;HttpOnly Expires: Thu, 01 Jan 1970 00:00:00 GMT Content-Type: text/plain Vary: Accept-Encoding, User-Agent Content-Length: 1028 Server: Jetty(8.1.17.v20150415) { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/host_components?HostRoles/component_name=APP_TIMELINE_SERVER", "items" : [ { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm09.ncsa.illinois.edu/host_components/APP_TIMELINE_SERVER", "HostRoles" : { "cluster_name" : "ROGERGPFS", "component_name" : "APP_TIMELINE_SERVER", "host_name" : "cg-hm09.ncsa.illinois.edu" }, "host" : { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm09.ncsa.illinois.edu" } }, { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm11.ncsa.illinois.edu/host_components/APP_TIMELINE_SERVER", "HostRoles" : { "cluster_name" : "ROGERGPFS", "component_name" : "APP_TIMELINE_SERVER", "host_name" : "cg-hm11.ncsa.illinois.edu" }, "host" : { "href" : "https://localhost:8443/api/v1/clusters/ROGERGPFS/hosts/cg-hm11.ncsa.illinois.edu" } } ] } ... View more

I cannot seem to find that command. ... View more