大家好, 我是上白书妖!
知识源于积累,登峰造极源于自律
今天我根据以前所以学的一些文献,笔记等资料整理出一些小知识点,有不当之处,欢迎各位斧正
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ sbin/hadoop-daemon.sh start datanode
starting datanode, logging to /opt/module/hadoop-2.7.2/logs/hadoop-shangbaishuyao-datanode-Hadoop102.out
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ sbin/hadoop-daemon.sh start datanode
starting datanode, logging to /opt/module/hadoop-2.7.2/logs/hadoop-shangbaishuyao-datanode-Hadoop102.out
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ jps
3042 NameNode
3917 Jps
如上所示,我开启datanode节点后,用jps查看居然发现datanode没有显示
解决办法就是:
删除你节点上的data/ 和logs/
如下:
[shangbaishuyao@Hadoop103 hadoop-2.7.2]$ ll
总用量 68
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 bin
drwxrwxr-x. 3 shangbaishuyao shangbaishuyao 4096 2月 29 21:21 data
drwxr-xr-x. 3 shangbaishuyao shangbaishuyao 4096 5月 22 2017 etc
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 include
drwxrwxr-x. 2 shangbaishuyao shangbaishuyao 4096 2月 27 23:53 input
drwxr-xr-x. 3 shangbaishuyao shangbaishuyao 4096 5月 22 2017 lib
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 libexec
-rw-r--r--. 1 shangbaishuyao shangbaishuyao 15429 5月 22 2017 LICENSE.txt
drwxrwxr-x. 2 shangbaishuyao shangbaishuyao 4096 2月 29 21:21 logs
-rw-r--r--. 1 shangbaishuyao shangbaishuyao 101 5月 22 2017 NOTICE.txt
drwxrwxr-x. 2 shangbaishuyao shangbaishuyao 4096 2月 27 21:11 output
-rw-r--r--. 1 shangbaishuyao shangbaishuyao 1366 5月 22 2017 README.txt
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 sbin
drwxr-xr-x. 4 shangbaishuyao shangbaishuyao 4096 5月 22 2017 share
[shangbaishuyao@Hadoop103 hadoop-2.7.2]$ rm
rm: 缺少操作数
请尝试执行"rm --help"来获取更多信息。
[shangbaishuyao@Hadoop103 hadoop-2.7.2]$ rm -rf data/ l
lib/ libexec/ logs/
[shangbaishuyao@Hadoop103 hadoop-2.7.2]$ rm -rf data/ logs/
[shangbaishuyao@Hadoop103 hadoop-2.7.2]$ ll
总用量 60
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 bin
drwxr-xr-x. 3 shangbaishuyao shangbaishuyao 4096 5月 22 2017 etc
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 include
drwxrwxr-x. 2 shangbaishuyao shangbaishuyao 4096 2月 27 23:53 input
drwxr-xr-x. 3 shangbaishuyao shangbaishuyao 4096 5月 22 2017 lib
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 libexec
-rw-r--r--. 1 shangbaishuyao shangbaishuyao 15429 5月 22 2017 LICENSE.txt
-rw-r--r--. 1 shangbaishuyao shangbaishuyao 101 5月 22 2017 NOTICE.txt
drwxrwxr-x. 2 shangbaishuyao shangbaishuyao 4096 2月 27 21:11 output
-rw-r--r--. 1 shangbaishuyao shangbaishuyao 1366 5月 22 2017 README.txt
drwxr-xr-x. 2 shangbaishuyao shangbaishuyao 4096 5月 22 2017 sbin
drwxr-xr-x. 4 shangbaishuyao shangbaishuyao 4096 5月 22 2017 share
当然,前提是你的配置完全没有问题
然后就完美解决了
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ hdfs namenode -format
20/02/29 23:42:05 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = Hadoop102/192.168.6.102
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 2.7.2
STARTUP_MSG: classpath = /opt/module/hadoop-2.7.2/etc/hadoop:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jersey-core-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-collections-3.2.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jsp-api-2.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-configuration-1.6.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/netty-3.6.2.Final.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jackson-xc-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/api-asn1-api-1.0.0-M20.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-cli-1.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/httpclient-4.2.5.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/paranamer-2.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jsr305-3.0.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-io-2.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/xmlenc-0.52.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jsch-0.1.42.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/activation-1.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/servlet-api-2.5.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-httpclient-3.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jettison-1.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/log4j-1.2.17.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/curator-client-2.7.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/junit-4.11.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/mockito-all-1.8.5.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jets3t-0.9.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/zookeeper-3.4.6.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/hadoop-auth-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/stax-api-1.0-2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/httpcore-4.2.5.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/guava-11.0.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/curator-framework-2.7.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-logging-1.1.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/java-xmlbuilder-0.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/apacheds-i18n-2.0.0-M15.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-digester-1.8.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jetty-6.1.26.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/gson-2.2.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-math3-3.1.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-compress-1.4.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jersey-server-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-codec-1.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/avro-1.7.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/curator-recipes-2.7.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-lang-2.6.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/hadoop-annotations-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/htrace-core-3.1.0-incubating.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jetty-util-6.1.26.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/hamcrest-core-1.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/api-util-1.0.0-M20.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/commons-net-3.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/xz-1.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/apacheds-kerberos-codec-2.0.0-M15.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/jersey-json-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/slf4j-api-1.7.10.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/lib/asm-3.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/hadoop-common-2.7.2-tests.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/hadoop-common-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/common/hadoop-nfs-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/xml-apis-1.3.04.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jsr305-3.0.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/commons-io-2.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/netty-all-4.0.23.Final.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/guava-11.0.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/xercesImpl-2.9.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/commons-lang-2.6.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/htrace-core-3.1.0-incubating.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/lib/asm-3.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/hadoop-hdfs-2.7.2-tests.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/hadoop-hdfs-nfs-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/hdfs/hadoop-hdfs-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jersey-core-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-collections-3.2.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/guice-3.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jersey-client-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/javax.inject-1.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jackson-xc-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-cli-1.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jsr305-3.0.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-io-2.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jaxb-api-2.2.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/activation-1.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/servlet-api-2.5.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jettison-1.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/log4j-1.2.17.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/zookeeper-3.4.6.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/stax-api-1.0-2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/guava-11.0.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-logging-1.1.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/zookeeper-3.4.6-tests.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jetty-6.1.26.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jersey-server-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-codec-1.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jackson-jaxrs-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/commons-lang-2.6.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jackson-mapper-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jetty-util-6.1.26.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jaxb-impl-2.2.3-1.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/leveldbjni-all-1.8.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/xz-1.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/aopalliance-1.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jackson-core-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/jersey-json-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/lib/asm-3.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-registry-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-client-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-tests-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-common-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-api-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-common-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/guice-3.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/javax.inject-1.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/commons-io-2.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/junit-4.11.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/hadoop-annotations-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/leveldbjni-all-1.8.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/xz-1.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/jackson-core-asl-1.9.13.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/lib/asm-3.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.7.2.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.7.2-tests.jar:/opt/module/hadoop-2.7.2/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.7.2.jar:/opt/module/hadoop-2.7.2/contrib/capacity-scheduler/*.jar
STARTUP_MSG: build = Unknown -r Unknown; compiled by 'root' on 2017-05-22T10:49Z
STARTUP_MSG: java = 1.8.0_144
************************************************************/
20/02/29 23:42:05 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
20/02/29 23:42:05 INFO namenode.NameNode: createNameNode [-format]
Formatting using clusterid: CID-90516f81-38a6-4164-b59a-88a3ed9d6c30
20/02/29 23:42:05 INFO namenode.FSNamesystem: No KeyProvider found.
20/02/29 23:42:05 INFO namenode.FSNamesystem: fsLock is fair:true
20/02/29 23:42:05 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit=1000
20/02/29 23:42:05 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true
20/02/29 23:42:05 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000
20/02/29 23:42:05 INFO blockmanagement.BlockManager: The block deletion will start around 2020 二月 29 23:42:05
20/02/29 23:42:05 INFO util.GSet: Computing capacity for map BlocksMap
20/02/29 23:42:05 INFO util.GSet: VM type = 64-bit
20/02/29 23:42:05 INFO util.GSet: 2.0% max memory 889 MB = 17.8 MB
20/02/29 23:42:05 INFO util.GSet: capacity = 2^21 = 2097152 entries
20/02/29 23:42:05 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false
20/02/29 23:42:05 INFO blockmanagement.BlockManager: defaultReplication = 3
20/02/29 23:42:05 INFO blockmanagement.BlockManager: maxReplication = 512
20/02/29 23:42:05 INFO blockmanagement.BlockManager: minReplication = 1
20/02/29 23:42:05 INFO blockmanagement.BlockManager: maxReplicationStreams = 2
20/02/29 23:42:05 INFO blockmanagement.BlockManager: replicationRecheckInterval = 3000
20/02/29 23:42:05 INFO blockmanagement.BlockManager: encryptDataTransfer = false
20/02/29 23:42:05 INFO blockmanagement.BlockManager: maxNumBlocksToLog = 1000
20/02/29 23:42:05 INFO namenode.FSNamesystem: fsOwner = shangbaishuyao (auth:SIMPLE)
20/02/29 23:42:05 INFO namenode.FSNamesystem: supergroup = supergroup
20/02/29 23:42:05 INFO namenode.FSNamesystem: isPermissionEnabled = true
20/02/29 23:42:05 INFO namenode.FSNamesystem: HA Enabled: false
20/02/29 23:42:05 INFO namenode.FSNamesystem: Append Enabled: true
20/02/29 23:42:06 INFO util.GSet: Computing capacity for map INodeMap
20/02/29 23:42:06 INFO util.GSet: VM type = 64-bit
20/02/29 23:42:06 INFO util.GSet: 1.0% max memory 889 MB = 8.9 MB
20/02/29 23:42:06 INFO util.GSet: capacity = 2^20 = 1048576 entries
20/02/29 23:42:06 INFO namenode.FSDirectory: ACLs enabled? false
20/02/29 23:42:06 INFO namenode.FSDirectory: XAttrs enabled? true
20/02/29 23:42:06 INFO namenode.FSDirectory: Maximum size of an xattr: 16384
20/02/29 23:42:06 INFO namenode.NameNode: Caching file names occuring more than 10 times
20/02/29 23:42:06 INFO util.GSet: Computing capacity for map cachedBlocks
20/02/29 23:42:06 INFO util.GSet: VM type = 64-bit
20/02/29 23:42:06 INFO util.GSet: 0.25% max memory 889 MB = 2.2 MB
20/02/29 23:42:06 INFO util.GSet: capacity = 2^18 = 262144 entries
20/02/29 23:42:06 INFO namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct = 0.9990000128746033
20/02/29 23:42:06 INFO namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0
20/02/29 23:42:06 INFO namenode.FSNamesystem: dfs.namenode.safemode.extension = 30000
20/02/29 23:42:06 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets = 10
20/02/29 23:42:06 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users = 10
20/02/29 23:42:06 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes = 1,5,25
20/02/29 23:42:06 INFO namenode.FSNamesystem: Retry cache on namenode is enabled
20/02/29 23:42:06 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis
20/02/29 23:42:06 INFO util.GSet: Computing capacity for map NameNodeRetryCache
20/02/29 23:42:06 INFO util.GSet: VM type = 64-bit
20/02/29 23:42:06 INFO util.GSet: 0.029999999329447746% max memory 889 MB = 273.1 KB
20/02/29 23:42:06 INFO util.GSet: capacity = 2^15 = 32768 entries
20/02/29 23:42:06 INFO namenode.FSImage: Allocated new BlockPoolId: BP-1847688083-192.168.6.102-1582990926192
20/02/29 23:42:06 INFO common.Storage: Storage directory /opt/module/hadoop-2.7.2/data/tmp/dfs/name has been successfully formatted.
20/02/29 23:42:06 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
20/02/29 23:42:06 INFO util.ExitUtil: Exiting with status 0
20/02/29 23:42:06 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at Hadoop102/192.168.6.102
************************************************************/
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ jps
4165 Jps
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ sbin/h
hadoop-daemon.sh hadoop-daemons.sh hdfs-config.cmd hdfs-config.sh httpfs.sh
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ sbin/hadoop-daemon.sh start namenode
starting namenode, logging to /opt/module/hadoop-2.7.2/logs/hadoop-shangbaishuyao-namenode-Hadoop102.out
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ jps
4195 NameNode
4267 Jps
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ sbin/hadoop-daemon.sh start datanode
starting datanode, logging to /opt/module/hadoop-2.7.2/logs/hadoop-shangbaishuyao-datanode-Hadoop102.out
[shangbaishuyao@Hadoop102 hadoop-2.7.2]$ jps
4195 NameNode
4372 Jps
4296 DataNode
结束寄语： 知识源于积累,登峰造极源于自律
