我刚刚开始学习 Hadoop。
我在 CentOS 上使用Hbase 0.94.12在 Cloudera CDH4 上运行Hadoop 2.0.0。
我运行命令 service hbase-master start 仅启动服务器几秒钟。
显示jps了这个结果：
29300 SecondaryNameNode
3354 NodeManager
3032 RunJar
2957 RunJar
2552 HRegionServer
4016 Jps
3432 ResourceManager
2312 HQuorumPeer
30345 QuorumPeerMain
29228 NameNode
2671 JobHistoryServer
29157 DataNode
此外，这是确切的错误日志
2013-10-15 08:30:35,635 INFO org.apache.hadoop.hbase.master.ActiveMasterManager: Deleting ZNode for /hbase/backup-masters/127.0.0.1,60000,1381818635067 from backup master directory
2013-10-15 08:30:35,643 WARN org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Node /hbase/backup-masters/127.0.0.1,60000,1381818635067 already deleted, and this is not a retry
2013-10-15 08:30:35,643 INFO org.apache.hadoop.hbase.master.ActiveMasterManager: Master=127.0.0.1,60000,1381818635067
2013-10-15 08:30:35,768 FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception. Starting shutdown.
java.lang.NoSuchMethodError: org.apache.hadoop.conf.Configuration.getTrimmed(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
at org.apache.hadoop.hdfs.DFSClient$Conf.<init>(DFSClient.java:306)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:421)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:410)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:128)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2142)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:80)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2176)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2158)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:302)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:194)
at org.apache.hadoop.hbase.util.FSUtils.getRootDir(FSUtils.java:667)
at org.apache.hadoop.hbase.master.MasterFileSystem.<init>(MasterFileSystem.java:98)
at org.apache.hadoop.hbase.master.HMaster.finishInitialization(HMaster.java:536)
at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:396)
at java.lang.Thread.run(Thread.java:724)
2013-10-15 08:30:35,790 INFO org.apache.hadoop.hbase.master.HMaster: Aborting
2013-10-15 08:30:35,790 DEBUG org.apache.hadoop.hbase.master.HMaster: Stopping service threads
2013-10-15 08:30:35,791 INFO org.apache.hadoop.ipc.HBaseServer: Stopping server on 60000
2013-10-15 08:30:35,791 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 0 on 60000: exiting
另外我的 hbase-site.xml 配置如下：
<configuration>
<property>
<name>hbase.rootdir</name>
<value>hdfs://localhost:8020/hbase</value>
</property>
<property>
<name>hbase.master</name>
<value>master_hostname:60000</value>
<description>The host and port that the HBase master runs at.</description>
</property>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2182</value>
</property>
<property>
<name>hbase.zookeeper.property.maxClientCnxns</name>
<value>300</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/var/lib/zookeeper</value>
<description>Property from ZooKeeper's config zoo.cfg.
The directory where the snapshot is stored.
</description>
</property>
</configuration>
这是我的 hbase-env.sh 文件：
# Set environment variables here.
# This script sets variables multiple times over the course of starting an hbase process,
# so try to keep things idempotent unless you want to take an even deeper look
# into the startup scripts (bin/hbase, etc.)
# The java implementation to use. Java 1.6 required.
export JAVA_HOME=/usr/java/jdk1.7.0_40
# Extra Java CLASSPATH elements. Optional.
export HBASE_CLASSPATH=/etc/hadoop/conf
# The maximum amount of heap to use, in MB. Default is 1000.
export HBASE_HEAPSIZE=4096
# Extra Java runtime options.
# Below are what we set by default. May only work with SUN JVM.
# For more on why as well as other possible settings,
# see http://wiki.apache.org/hadoop/PerformanceTuning
export HBASE_OPTS="-XX:+UseConcMarkSweepGC"
# Uncomment one of the below three options to enable java garbage collection logging for the server-side processes.
# This enables basic gc logging to the .out file.
# export SERVER_GC_OPTS="-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps"
# This enables basic gc logging to its own file.
# If FILE-PATH is not replaced, the log file(.gc) would still be generated in the HBASE_LOG_DIR .
# export SERVER_GC_OPTS="-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:<FILE-PATH>"
# This enables basic GC logging to its own file with automatic log rolling. Only applies to jdk 1.6.0_34+ and 1.7.0_2+.
# If FILE-PATH is not replaced, the log file(.gc) would still be generated in the HBASE_LOG_DIR .
# export SERVER_GC_OPTS="-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:<FILE-PATH> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=1 -XX:GCLogFileSize=512M"
# Uncomment one of the below three options to enable java garbage collection logging for the client processes.
# This enables basic gc logging to the .out file.
# export CLIENT_GC_OPTS="-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps"
# This enables basic gc logging to its own file.
# If FILE-PATH is not replaced, the log file(.gc) would still be generated in the HBASE_LOG_DIR .
# export CLIENT_GC_OPTS="-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:<FILE-PATH>"
# This enables basic GC logging to its own file with automatic log rolling. Only applies to jdk 1.6.0_34+ and 1.7.0_2+.
# If FILE-PATH is not replaced, the log file(.gc) would still be generated in the HBASE_LOG_DIR .
# export CLIENT_GC_OPTS="-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:<FILE-PATH> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=1 -XX:GCLogFileSize=512M"
# Uncomment below if you intend to use the EXPERIMENTAL off heap cache.
# export HBASE_OPTS="$HBASE_OPTS -XX:MaxDirectMemorySize="
# Set hbase.offheapcache.percentage in hbase-site.xml to a nonzero value.
# Uncomment and adjust to enable JMX exporting
# See jmxremote.password and jmxremote.access in $JRE_HOME/lib/management to configure remote password access.
# More details at: http://java.sun.com/javase/6/docs/technotes/guides/management/agent.html
#
# export HBASE_JMX_BASE="-Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false"
# export HBASE_MASTER_OPTS="$HBASE_MASTER_OPTS $HBASE_JMX_BASE -Dcom.sun.management.jmxremote.port=10101"
# export HBASE_REGIONSERVER_OPTS="$HBASE_REGIONSERVER_OPTS $HBASE_JMX_BASE -Dcom.sun.management.jmxremote.port=10102"
# export HBASE_THRIFT_OPTS="$HBASE_THRIFT_OPTS $HBASE_JMX_BASE -Dcom.sun.management.jmxremote.port=10103"
# export HBASE_ZOOKEEPER_OPTS="$HBASE_ZOOKEEPER_OPTS $HBASE_JMX_BASE -Dcom.sun.management.jmxremote.port=10104"
# File naming hosts on which HRegionServers will run. $HBASE_HOME/conf/regionservers by default.
# export HBASE_REGIONSERVERS=${HBASE_HOME}/conf/regionservers
# File naming hosts on which backup HMaster will run. $HBASE_HOME/conf/backup-masters by default.
# export HBASE_BACKUP_MASTERS=${HBASE_HOME}/conf/backup-masters
# Extra ssh options. Empty by default.
# export HBASE_SSH_OPTS="-o ConnectTimeout=1 -o SendEnv=HBASE_CONF_DIR"
# Where log files are stored. $HBASE_HOME/logs by default.
# export HBASE_LOG_DIR=${HBASE_HOME}/logs
# Enable remote JDWP debugging of major HBase processes. Meant for Core Developers
# export HBASE_MASTER_OPTS="$HBASE_MASTER_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8070"
# export HBASE_REGIONSERVER_OPTS="$HBASE_REGIONSERVER_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8071"
# export HBASE_THRIFT_OPTS="$HBASE_THRIFT_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8072"
# export HBASE_ZOOKEEPER_OPTS="$HBASE_ZOOKEEPER_OPTS -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8073"
# A string representing this instance of hbase. $USER by default.
# export HBASE_IDENT_STRING=$USER
# The scheduling priority for daemon processes. See 'man nice'.
# export HBASE_NICENESS=10
# The directory where pid files are stored. /tmp by default.
# export HBASE_PID_DIR=/var/hadoop/pids
# Seconds to sleep between slave commands. Unset by default. This
# can be useful in large clusters, where, e.g., slave rsyncs can
# otherwise arrive faster than the master can service them.
# export HBASE_SLAVE_SLEEP=0.1
# Tell HBase whether it should manage it's own instance of Zookeeper or not.
export HBASE_MANAGES_ZK=true
欢迎任何帮助:)
谢谢