Hi, I am using HDP3.0 and ambari 2.7 blueprint. webhdfs via knox failed due to: 2018-08-21 19:26:33,035 ERROR knox.gateway (GatewayDispatchFilter.java:isDispatchAllowed(155)) - The dispatch to http://myhost.com:50070/webhdfs/v1/user was disallowed because it fails the dispatch whitelist validation. See documentation for dispatch whitelisting. I have verified webhdfs without knox works: curl -vvv http://myhost.com:50070/webhdfs/v1/user/?op=LISTSTATUS Also, ambari, zeppelin and ranger UI work fine via knox. The knox settings are: gateway.dispatch.whitelist: DEFAULT gateway.dispatch.whitelist.services: DATANODE,HBASEUI,HDFSUI,JOBHISTORYUI,NODEUI,RESOURCEMANAGER,WEBHBASE,WEBHDFS,YARNUI webhdfs via knox worked for me on HDP2.6. Any idea? Appreciate any help. ... View more

Hi, I am using HDP3.0 and ambari 2.7 blueprint to install my cluster. Yarn's timeline service V2 reader cannot create zookeeper node: at org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$ZKTask$1.exec(ReadOnlyZKClient.java:168) at org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient.run(ReadOnlyZKClient.java:323) at java.lang.Thread.run(Thread.java:745) 2018-08-14 17:59:55,827 INFO [main] client.RpcRetryingCallerImpl: Call exception, tries=6, retries=6, started=4142 ms ago, cancelled=false, msg=org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /atsv2-hbase-unsecure/meta-region-server, details=row 'prod.timelineservice.entity' on table 'hbase:meta' at null I observed yarn is using timeline service 1.5 and timeline service reader v2. I am not sure if this is expected. My blueprint is using: { "name": "APP_TIMELINE_SERVER" }, Adding hbase client per this post did not help. Any idea? Thanks. ... View more

Hi,I installed hadoop cluster using HDP3.0 but hbase does not work due to this error: Caused by: java.lang.UnsatisfiedLinkError: failed to load the required native library at org.apache.hbase.thirdparty.io.netty.channel.epoll.Epoll.ensureAvailability(Epoll.java:81) at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoop.<clinit>(EpollEventLoop.java:55) at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.newChild(EpollEventLoopGroup.java:134) at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.newChild(EpollEventLoopGroup.java:35) at org.apache.hbase.thirdparty.io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84) at org.apache.hbase.thirdparty.io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:58) at org.apache.hbase.thirdparty.io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:47) at org.apache.hbase.thirdparty.io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:59) at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.<init>(EpollEventLoopGroup.java:104) at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.<init>(EpollEventLoopGroup.java:91) at org.apache.hbase.thirdparty.io.netty.channel.epoll.EpollEventLoopGroup.<init>(EpollEventLoopGroup.java:68) at org.apache.hadoop.hbase.util.NettyEventLoopGroupConfig.<init>(NettyEventLoopGroupConfig.java:61) at org.apache.hadoop.hbase.regionserver.HRegionServer.setupNetty(HRegionServer.java:673) at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:532) at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:472) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:2923) ... 5 more Caused by: java.lang.UnsatisfiedLinkError: /tmp/liborg_apache_hbase_thirdparty_netty_transport_native_epoll_x86_644257058602762792223.so: /tmp/liborg_apache_hbase_thirdparty_netty_transport_native_ep oll_x86_644257058602762792223.so: failed to map segment from shared object: Operation not permitted at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824) at java.lang.Runtime.load0(Runtime.java:809) at java.lang.System.load(System.java:1086) at org.apache.hbase.thirdparty.io.netty.util.internal.NativeLibraryUtil.loadLibrary(NativeLibraryUtil.java:36) at org.apache.hbase.thirdparty.io.netty.util.internal.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:243) at org.apache.hbase.thirdparty.io.netty.util.internal.NativeLibraryLoader.load(NativeLibraryLoader.java:187) at org.apache.hbase.thirdparty.io.netty.channel.epoll.Native.loadNativeLibrary(Native.java:207) at org.apache.hbase.thirdparty.io.netty.channel.epoll.Native.<clinit>(Native.java:65) at org.apache.hbase.thirdparty.io.netty.channel.epoll.Epoll.<clinit>(Epoll.java:33) ... 24 more Looks it is caused by nonexec permission of /tmp. To make hbase not use /tmp, I added: { "hbase-site": { "properties": { "hbase.tmp.dir": "/u01/tmp" } } } But this does not work and hbase still uses /tmp. Any idea? Appreciate any help. ... View more