메뉴 건너뛰기

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.


hadoop클러스터를 구성 하던 서버중 HA를 담당하는 서버의 hostname등이 변경되었을때는 "hadoop-daemon.sh start zkfc"를 수행할때

아래와 같은 오류가 발생할 수 있는데 zookeeper내의 /hadoop-ha/mycluster 노드에 있는 정보가 변경된 사항을 반영하지 못해서 문제가

발생한것이다.


이때는 "hdfs zkfc -formatZK"를 실행하여 ZKFC정보를 재생성해준다.


-----------------hdfs zkfc -formatZK실행 로그----------------

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:java.library.path=:/svc/apps/sda/bin/hadoop/hadoop/lib/native

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:java.io.tmpdir=/tmp

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:java.compiler=<NA>

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:os.name=Linux

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:os.arch=amd64

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:os.version=2.6.32-573.22.1.el6.x86_64

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:user.name=root

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:user.home=/root

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Client environment:user.dir=/home/gooper/svc/apps/sda/bin/hadoop/hadoop-2.7.2/bin

16/07/29 19:30:43 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=gsda1:2181,gsda2:2181,gsda3:2181 sessionTimeout=5000 watcher=org.apache.hadoop.ha.ActiveStandbyElector$WatcherWithClientRef@1e178745

16/07/29 19:30:43 INFO zookeeper.ClientCnxn: Opening socket connection to server sda2/XXX.XXX.XXX.44:2181. Will not attempt to authenticate using SASL (unknown error)

16/07/29 19:30:43 INFO zookeeper.ClientCnxn: Socket connection established to sda2/XXX.XXX.XXX.44:2181, initiating session

16/07/29 19:30:43 INFO zookeeper.ClientCnxn: Session establishment complete on server sda2/XXX.XXX.XXX.44:2181, sessionid = 0x25634f0fabb0300, negotiated timeout = 5000

16/07/29 19:30:43 INFO ha.ActiveStandbyElector: Session connected.

===============================================

The configured parent znode /hadoop-ha/mycluster already exists.

Are you sure you want to clear all failover information from

ZooKeeper?

WARNING: Before proceeding, ensure that all HDFS services and

failover controllers are stopped!

===============================================

Proceed formatting /hadoop-ha/mycluster? (Y or N) Y

16/07/29 19:36:25 INFO ha.ActiveStandbyElector: Recursively deleting /hadoop-ha/mycluster from ZK...

16/07/29 19:36:25 INFO ha.ActiveStandbyElector: Successfully deleted /hadoop-ha/mycluster from ZK.

16/07/29 19:36:26 INFO ha.ActiveStandbyElector: Successfully created /hadoop-ha/mycluster in ZK.

16/07/29 19:36:26 INFO zookeeper.ZooKeeper: Session: 0x25634f0fabb0300 closed

16/07/29 19:36:26 INFO zookeeper.ClientCnxn: EventThread shut down



------------------오류내용-------------

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:java.library.path=/home/gooper/svc/apps/sda/bin/hadoop/hadoop-2.7.2/lib

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:java.io.tmpdir=/tmp

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:java.compiler=<NA>

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:os.name=Linux

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:os.arch=amd64

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:os.version=2.6.32-573.12.1.el6.x86_64

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:user.name=root

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:user.home=/root

2016-07-29 18:33:32,857 INFO org.apache.zookeeper.ZooKeeper: Client environment:user.dir=/home/gooper/svc/apps/sda/bin/hadoop/hadoop-2.7.2

2016-07-29 18:33:32,858 INFO org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=gsda1:2181,gsda2:2181,gsda3:2181 sessionTimeout=5000 watcher=org.apache.hadoop.ha.Ac

tiveStandbyElector$WatcherWithClientRef@52bf72b5

2016-07-29 18:33:32,936 FATAL org.apache.hadoop.hdfs.tools.DFSZKFailoverController: Got a fatal error, exiting now

java.net.UnknownHostException: gsda3: unknown error

        at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)

        at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)

        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)

        at java.net.InetAddress.getAllByName0(InetAddress.java:1276)

        at java.net.InetAddress.getAllByName(InetAddress.java:1192)

        at java.net.InetAddress.getAllByName(InetAddress.java:1126)

        at org.apache.zookeeper.client.StaticHostProvider.<init>(StaticHostProvider.java:61)

        at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:445)

        at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:380)

        at org.apache.hadoop.ha.ActiveStandbyElector.getNewZooKeeper(ActiveStandbyElector.java:631)

        at org.apache.hadoop.ha.ActiveStandbyElector.createConnection(ActiveStandbyElector.java:775)

        at org.apache.hadoop.ha.ActiveStandbyElector.<init>(ActiveStandbyElector.java:229)

        at org.apache.hadoop.ha.ZKFailoverController.initZK(ZKFailoverController.java:350)

        at org.apache.hadoop.ha.ZKFailoverController.doRun(ZKFailoverController.java:191)

        at org.apache.hadoop.ha.ZKFailoverController.access$000(ZKFailoverController.java:61)

        at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:172)

        at org.apache.hadoop.ha.ZKFailoverController$1.run(ZKFailoverController.java:168)

        at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:415)

        at org.apache.hadoop.ha.ZKFailoverController.run(ZKFailoverController.java:168)

        at org.apache.hadoop.hdfs.tools.DFSZKFailoverController.main(DFSZKFailoverController.java:181)

번호 제목 글쓴이 날짜 조회 수
45 hadoop에서 yarn jar ..를 이용하여 appliction을 실행하여 정상적으로 수행되었으나 yarn UI의 어플리케이션 목록에 나타나지 않는 문제 총관리자 2017.05.02 29
44 hadoop에서 yarn jar ..를 이용하여 appliction을 실행하여 정상적으로 수행되었으나 yarn UI의 어플리케이션 목록에 나타나지 않는 문제 총관리자 2017.05.02 10
43 Cleaning up the staging area file시 'cannot access' 혹은 'Directory is not writable' 발생시 조치사항 총관리자 2017.05.02 182
42 Ubuntu 16.04 LTS에 4대에 Hadoop 2.8.0설치 총관리자 2017.05.01 456
41 Container killed by the ApplicationMaster. Container killed on request. Exit code is 143 Container exited with a non-zero exit code 143 TaskAttempt killed because it ran on unusable node 오류시 조치방법 총관리자 2017.04.06 299
40 서버중 slave,worker,regionserver만 재기동해야 할때 필요한 기동스크립트및 사용방법 총관리자 2017.02.03 132
39 HDFS상의 /tmp폴더에 Permission denied오류가 발생시 조치사항 총관리자 2017.01.25 172
38 Mountable HDFS on CentOS 6.x(hadoop 2.7.2의 nfs기능을 이용) 총관리자 2016.11.24 79
37 ./hadoop-daemon.sh start namenode로 namenode기동시 EditLog의 custerId, namespaceId가 달라서 발생하는 오류 해결방법 총관리자 2016.09.24 94
36 hadoop 어플리케이션을 사용하는 사용자 변경시 바꿔줘야 하는 부분 총관리자 2016.09.23 51
35 format된 namenode를 다른 서버에서 다시 format했을때 오류내용 총관리자 2016.09.22 88
34 AIX 7.1에 Hadoop설치(정리중#2) 총관리자 2016.09.20 159
33 AIX 7.1에 Hadoop설치(정리중) 총관리자 2016.09.12 202
» hadoop클러스터를 구성하던 서버중 HA를 담당하는 서버의 hostname등이 변경되어 문제가 발생했을때 조치사항 총관리자 2016.07.29 309
31 Journal Storage Directory /data/hadoop/journal/data/mycluster not formatted 오류시 조치사항 총관리자 2016.07.29 1439
30 Job이 끝난 log을 볼수 있도록 설정하기 총관리자 2016.05.30 225
29 Hadoop 완벽 가이드 정리된 링크 총관리자 2016.04.19 165
28 Incompatible clusterIDs오류 원인및 해결방법 총관리자 2016.04.01 193
27 namenode오류 복구시 사용하는 명령 총관리자 2016.04.01 180
26 "java.net.NoRouteToHostException: 호스트로 갈 루트가 없음" 오류시 확인및 조치할 사항 총관리자 2016.04.01 2234

A personal place to organize information learned during the development of such Hadoop, Hive, Hbase, Semantic IoT, etc.
We are open to the required minutes. Please send inquiries to gooper@gooper.com.

위로