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Bigdata, Semantic IoT, Hadoop, NoSQL

Bigdata, Hadoop ecosystem, Semantic IoT등의 프로젝트를 진행중에 습득한 내용을 정리하는 곳입니다.
필요한 분을 위해서 공개하고 있습니다. 문의사항은 gooper@gooper.com로 메일을 보내주세요.


HMaster서버와 HRegionServer간에 시간차이가 30000ms 이상나면 HRegionServer가 기동하지 못하하게 되는데
이때는 서버간의 시간을 맞춰줄 필요가 있다.

rdate -s time.bora.net를 각 서버에서 실행해주면 time.bora.net에서 제공하는 시간으로 동기화 된다.
혹은
ntpdate time.bora.net를 실행한다.



---------------------------------------------------------------------오류내용---------------------------------------------
2016-05-03 10:47:37,007 FATAL [regionserver/gsda3/xxx.xxx.xxx.41:16020] regionserver.HRegionServer: Master rejected startup because clock is out of sync
org.apache.hadoop.hbase.ClockOutOfSyncException: org.apache.hadoop.hbase.ClockOutOfSyncException: Server gsda3,16020,1462240056111 has been rejected; Reported time is too far out of sync with master.  Time difference of 67321ms > max allowed of 30000ms
        at org.apache.hadoop.hbase.master.ServerManager.checkClockSkew(ServerManager.java:388)
        at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:262)
        at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:322)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:8615)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
        at java.lang.Thread.run(Thread.java:745)

        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:422)
        at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
        at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRemoteException(ProtobufUtil.java:325)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:2271)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:893)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.ClockOutOfSyncException): org.apache.hadoop.hbase.ClockOutOfSyncException: Server gsda3,16020,1462240056111 has been rejected; Reported time is too far out of sync with master.  Time difference of 67321ms > max allowed of 30000ms
        at org.apache.hadoop.hbase.master.ServerManager.checkClockSkew(ServerManager.java:388)
        at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:262)
        at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:322)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:8615)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
        at java.lang.Thread.run(Thread.java:745)

        at org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1235)
        at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:222)
        at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:323)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$BlockingStub.regionServerStartup(RegionServerStatusProtos.java:8982)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:2269)
        ... 2 more
2016-05-03 10:47:37,008 FATAL [regionserver/gsda3/xxx.xxx.xxx.41:16020] regionserver.HRegionServer: ABORTING region server gsda3,16020,1462240056111: Unhandled: org.apache.hadoop.hbase.ClockOutOfSyncException: Server gsda3,16020,1462240056111 has been rejected; Reported time is too far out of sync with master.  Time difference of 67321ms > max allowed of 30000ms
        at org.apache.hadoop.hbase.master.ServerManager.checkClockSkew(ServerManager.java:388)
        at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:262)
        at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:322)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:8615)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
        at java.lang.Thread.run(Thread.java:745)

org.apache.hadoop.hbase.ClockOutOfSyncException: org.apache.hadoop.hbase.ClockOutOfSyncException: Server gsda3,16020,1462240056111 has been rejected; Reported time is too far out of sync with master.  Time difference of 67321ms > max allowed of 30000ms
        at org.apache.hadoop.hbase.master.ServerManager.checkClockSkew(ServerManager.java:388)
        at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:262)
        at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:322)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:8615)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
        at java.lang.Thread.run(Thread.java:745)

        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:422)
        at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
        at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRemoteException(ProtobufUtil.java:325)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:2271)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:893)
        at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.ClockOutOfSyncException): org.apache.hadoop.hbase.ClockOutOfSyncException: Server gsda3,16020,1462240056111 has been rejected; Reported time is too far out of sync with master.  Time difference of 67321ms > max allowed of 30000ms
        at org.apache.hadoop.hbase.master.ServerManager.checkClockSkew(ServerManager.java:388)
        at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:262)
        at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:322)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:8615)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
        at java.lang.Thread.run(Thread.java:745)

        at org.apache.hadoop.hbase.ipc.RpcClientImpl.call(RpcClientImpl.java:1235)
        at org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:222)
        at org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:323)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$BlockingStub.regionServerStartup(RegionServerStatusProtos.java:8982)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.reportForDuty(HRegionServer.java:2269)

.................

2016-05-03 10:47:37,022 INFO  [regionserver/gsda3/xxx.xxx.xxx.41:16020] regionserver.HRegionServer: STOPPED: Unhandled: org.apache.hadoop.hbase.ClockOutOfSyncException: Server gsda1,16020,1462240056111 has been rejected; Reported time is too far out of sync with master.  Time difference of 67321ms > max allowed of 30000ms
        at org.apache.hadoop.hbase.master.ServerManager.checkClockSkew(ServerManager.java:388)
        at org.apache.hadoop.hbase.master.ServerManager.regionServerStartup(ServerManager.java:262)
        at org.apache.hadoop.hbase.master.MasterRpcServices.regionServerStartup(MasterRpcServices.java:322)
        at org.apache.hadoop.hbase.protobuf.generated.RegionServerStatusProtos$RegionServerStatusService$2.callBlockingMethod(RegionServerStatusProtos.java:8615)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
        at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
        at java.lang.Thread.run(Thread.java:745)

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