执行NameNode格式化时，运行 hdfs namenode -format 报错：
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java.io.IOException: Cannot remove current directory: /home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name/current报错原因是，之前已经执行NameNode格式化成功过。
解决办法：
使用root权限删除格式化NameNode时产生的current目录，再次执行格式化NameNode命令。
1、使用root登录
su root2、删除/home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name目录下的current文件夹
进入目录/home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name
cd /home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name可以看到该目录下有一个current文件夹?
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执行 rm -rf current 删除该文件夹后再通过ls查看目录可以看到已经删除了current
再重新执行格式化命令hdfs namenode -format 就可以了
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[root@localhost name]# rm -rf current
[root@localhost name]# ls
[root@localhost name]# hdfs namenode -format
22/04/26 02:45:55 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = localhost/127.0.0.1
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 2.10.1
STARTUP_MSG: classpath = /home/bigdata/Opt/hadoop-2.10.1/etc/hadoop:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-collections-3.2.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/servlet-api-2.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jetty-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jetty-util-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jetty-sslengine-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jsp-api-2.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jersey-core-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jersey-json-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jettison-1.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/stax-api-1.0-2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/activation-1.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jackson-xc-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jersey-server-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/asm-3.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/log4j-1.2.17.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jets3t-0.9.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/java-xmlbuilder-0.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-lang-2.6.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-configuration-1.6.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-digester-1.8.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-beanutils-1.9.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-lang3-3.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/slf4j-api-1.7.25.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/avro-1.7.7.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/paranamer-2.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/snappy-java-1.0.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-compress-1.19.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/gson-2.2.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/hadoop-auth-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/nimbus-jose-jwt-7.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jcip-annotations-1.0-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/json-smart-1.3.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/apacheds-kerberos-codec-2.0.0-M15.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/apacheds-i18n-2.0.0-M15.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/api-asn1-api-1.0.0-M20.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/api-util-1.0.0-M20.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/zookeeper-3.4.14.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/spotbugs-annotations-3.1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/audience-annotations-0.5.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/netty-3.10.6.Final.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/curator-framework-2.13.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/curator-client-2.13.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jsch-0.1.55.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/curator-recipes-2.13.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/htrace-core4-4.1.0-incubating.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/stax2-api-3.1.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/woodstox-core-5.0.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/junit-4.11.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/hamcrest-core-1.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/mockito-all-1.8.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/hadoop-annotations-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/guava-11.0.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/jsr305-3.0.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-cli-1.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-math3-3.1.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/xmlenc-0.52.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/httpclient-4.5.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/httpcore-4.4.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-logging-1.1.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-codec-1.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-io-2.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/lib/commons-net-3.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/hadoop-common-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/hadoop-common-2.10.1-tests.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/common/hadoop-nfs-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jsr305-3.0.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/netty-3.10.6.Final.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/guava-11.0.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/commons-io-2.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/asm-3.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/commons-lang-2.6.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/htrace-core4-4.1.0-incubating.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/hadoop-hdfs-client-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/okhttp-2.7.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/okio-1.6.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/netty-all-4.1.50.Final.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/xercesImpl-2.12.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/xml-apis-1.4.01.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jackson-databind-2.9.10.6.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jackson-annotations-2.9.10.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/lib/jackson-core-2.9.10.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-2.10.1-tests.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-client-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-client-2.10.1-tests.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-native-client-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-native-client-2.10.1-tests.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-rbf-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-rbf-2.10.1-tests.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/hdfs/hadoop-hdfs-nfs-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-cli-1.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/log4j-1.2.17.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-compress-1.19.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/servlet-api-2.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-codec-1.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jetty-util-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jersey-core-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jersey-client-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jackson-core-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jackson-mapper-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jackson-jaxrs-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jackson-xc-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/guice-3.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/javax.inject-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/aopalliance-1.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-io-2.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jersey-server-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/asm-3.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jersey-json-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jettison-1.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jaxb-impl-2.2.3-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-math3-3.1.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/xmlenc-0.52.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/httpclient-4.5.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/httpcore-4.4.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-net-3.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-collections-3.2.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jetty-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jetty-sslengine-6.1.26.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jsp-api-2.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jets3t-0.9.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/java-xmlbuilder-0.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-configuration-1.6.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-digester-1.8.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-beanutils-1.9.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-lang3-3.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/avro-1.7.7.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/paranamer-2.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/snappy-java-1.0.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/gson-2.2.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/nimbus-jose-jwt-7.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jcip-annotations-1.0-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/json-smart-1.3.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/apacheds-kerberos-codec-2.0.0-M15.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/apacheds-i18n-2.0.0-M15.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/api-asn1-api-1.0.0-M20.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/api-util-1.0.0-M20.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/zookeeper-3.4.14.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/spotbugs-annotations-3.1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/audience-annotations-0.5.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/netty-3.10.6.Final.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/curator-framework-2.13.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/curator-client-2.13.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jsch-0.1.55.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/curator-recipes-2.13.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/htrace-core4-4.1.0-incubating.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/stax2-api-3.1.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/woodstox-core-5.0.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/leveldbjni-all-1.8.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/geronimo-jcache_1.0_spec-1.0-alpha-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/ehcache-3.3.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/HikariCP-java7-2.4.12.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/mssql-jdbc-6.2.1.jre7.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/metrics-core-3.0.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/fst-2.50.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/java-util-1.9.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/json-io-2.5.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-lang-2.6.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/guava-11.0.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jsr305-3.0.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/commons-logging-1.1.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/jaxb-api-2.2.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/stax-api-1.0-2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/activation-1.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-api-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-common-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-registry-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-common-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-tests-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-client-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-timeline-pluginstorage-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-server-router-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/avro-1.7.7.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/jackson-core-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.9.13.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/snappy-java-1.0.5.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/commons-compress-1.19.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/hadoop-annotations-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/commons-io-2.4.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/asm-3.2.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/netty-3.10.6.Final.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/leveldbjni-all-1.8.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/guice-3.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/javax.inject-1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/junit-4.11.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.10.1.jar:/home/bigdata/Opt/hadoop-2.10.1/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.10.1-tests.jar:/home/bigdata/Opt/hadoop-2.10.1/contrib/capacity-scheduler/*.jar
STARTUP_MSG: build = https://github.com/apache/hadoop -r 1827467c9a56f133025f28557bfc2c562d78e816; compiled by 'centos' on 2020-09-14T13:17Z
STARTUP_MSG: java = 1.8.0_331
************************************************************/
22/04/26 02:45:55 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
22/04/26 02:45:55 INFO namenode.NameNode: createNameNode [-format]
Formatting using clusterid: CID-c569564d-3577-4097-acc9-43a3c95ca571
22/04/26 02:45:56 INFO namenode.FSEditLog: Edit logging is async:true
22/04/26 02:45:56 INFO namenode.FSNamesystem: KeyProvider: null
22/04/26 02:45:56 INFO namenode.FSNamesystem: fsLock is fair: true
22/04/26 02:45:56 INFO namenode.FSNamesystem: Detailed lock hold time metrics enabled: false
22/04/26 02:45:56 INFO namenode.FSNamesystem: fsOwner = root (auth:SIMPLE)
22/04/26 02:45:56 INFO namenode.FSNamesystem: supergroup = supergroup
22/04/26 02:45:56 INFO namenode.FSNamesystem: isPermissionEnabled = true
22/04/26 02:45:56 INFO namenode.FSNamesystem: HA Enabled: false
22/04/26 02:45:56 INFO common.Util: dfs.datanode.fileio.profiling.sampling.percentage set to 0. Disabling file IO profiling
22/04/26 02:45:56 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit: configured=1000, counted=60, effected=1000
22/04/26 02:45:56 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true
22/04/26 02:45:56 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000
22/04/26 02:45:56 INFO blockmanagement.BlockManager: The block deletion will start around 2022 Apr 26 02:45:56
22/04/26 02:45:56 INFO util.GSet: Computing capacity for map BlocksMap
22/04/26 02:45:56 INFO util.GSet: VM type = 64-bit
22/04/26 02:45:56 INFO util.GSet: 2.0% max memory 889 MB = 17.8 MB
22/04/26 02:45:56 INFO util.GSet: capacity = 2^21 = 2097152 entries
22/04/26 02:45:56 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false
22/04/26 02:45:56 WARN conf.Configuration: No unit for dfs.heartbeat.interval(3) assuming SECONDS
22/04/26 02:45:56 WARN conf.Configuration: No unit for dfs.namenode.safemode.extension(30000) assuming MILLISECONDS
22/04/26 02:45:56 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.threshold-pct = 0.9990000128746033
22/04/26 02:45:56 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.min.datanodes = 0
22/04/26 02:45:56 INFO blockmanagement.BlockManagerSafeMode: dfs.namenode.safemode.extension = 30000
22/04/26 02:45:56 INFO blockmanagement.BlockManager: defaultReplication = 1
22/04/26 02:45:56 INFO blockmanagement.BlockManager: maxReplication = 512
22/04/26 02:45:56 INFO blockmanagement.BlockManager: minReplication = 1
22/04/26 02:45:56 INFO blockmanagement.BlockManager: maxReplicationStreams = 2
22/04/26 02:45:56 INFO blockmanagement.BlockManager: replicationRecheckInterval = 3000
22/04/26 02:45:56 INFO blockmanagement.BlockManager: encryptDataTransfer = false
22/04/26 02:45:56 INFO blockmanagement.BlockManager: maxNumBlocksToLog = 1000
22/04/26 02:45:56 INFO namenode.FSNamesystem: Append Enabled: true
22/04/26 02:45:56 INFO namenode.FSDirectory: GLOBAL serial map: bits=24 maxEntries=16777215
22/04/26 02:45:56 INFO util.GSet: Computing capacity for map INodeMap
22/04/26 02:45:56 INFO util.GSet: VM type = 64-bit
22/04/26 02:45:56 INFO util.GSet: 1.0% max memory 889 MB = 8.9 MB
22/04/26 02:45:56 INFO util.GSet: capacity = 2^20 = 1048576 entries
22/04/26 02:45:56 INFO namenode.FSDirectory: ACLs enabled? false
22/04/26 02:45:56 INFO namenode.FSDirectory: XAttrs enabled? true
22/04/26 02:45:56 INFO namenode.NameNode: Caching file names occurring more than 10 times
22/04/26 02:45:56 INFO snapshot.SnapshotManager: Loaded config captureOpenFiles: falseskipCaptureAccessTimeOnlyChange: false
22/04/26 02:45:56 INFO util.GSet: Computing capacity for map cachedBlocks
22/04/26 02:45:56 INFO util.GSet: VM type = 64-bit
22/04/26 02:45:56 INFO util.GSet: 0.25% max memory 889 MB = 2.2 MB
22/04/26 02:45:56 INFO util.GSet: capacity = 2^18 = 262144 entries
22/04/26 02:45:56 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets = 10
22/04/26 02:45:56 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users = 10
22/04/26 02:45:56 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes = 1,5,25
22/04/26 02:45:56 INFO namenode.FSNamesystem: Retry cache on namenode is enabled
22/04/26 02:45:56 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis
22/04/26 02:45:56 INFO util.GSet: Computing capacity for map NameNodeRetryCache
22/04/26 02:45:56 INFO util.GSet: VM type = 64-bit
22/04/26 02:45:56 INFO util.GSet: 0.029999999329447746% max memory 889 MB = 273.1 KB
22/04/26 02:45:56 INFO util.GSet: capacity = 2^15 = 32768 entries
22/04/26 02:45:56 INFO namenode.FSImage: Allocated new BlockPoolId: BP-3891196-127.0.0.1-1650966356523
22/04/26 02:45:56 INFO common.Storage: Storage directory /home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name has been successfully formatted.
22/04/26 02:45:56 INFO namenode.FSImageFormatProtobuf: Saving image file /home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 using no compression
22/04/26 02:45:57 INFO namenode.FSImageFormatProtobuf: Image file /home/bigdata/Opt/hadoop-2.10.1/tmp/dfs/name/current/fsimage.ckpt_0000000000000000000 of size 323 bytes saved in 0 seconds .
22/04/26 02:45:57 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
22/04/26 02:45:57 INFO namenode.FSImage: FSImageSaver clean checkpoint: txid = 0 when meet shutdown.
22/04/26 02:45:57 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1
************************************************************/
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