运行hbase MR作业时，我的cdh5.2集群会出现FileNotFoundException
我的cdh5.2群集运行hbase MR作业时出现问题。
例如，我将hbase类路径添加到hadoop类路径中：
vi /etc/hadoop/conf/hadoop-env.sh 添加行：
export HADOOP_CLASSPATH="/usr/lib/hbase/bin/hbase classpath:$HADOOP_CLASSPATH"
当我运行时： hadoop jar /usr/lib/hbase/hbase-server-0.98.6-cdh5.2.1.jar rowcounter "mytable"
我得到以下exception：
14/12/09 03:44:02 WARN security.UserGroupInformation: PriviledgedActionException as:root (auth:SIMPLE) cause:java.io.FileNotFoundException: File does not exist: hdfs://clusterName/usr/lib/hbase/lib/hbase-client-0.98.6-cdh5.2.1.jar Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.hbase.mapreduce.Driver.main(Driver.java:54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.util.RunJar.main(RunJar.java:212) Caused by: java.io.FileNotFoundException: File does not exist: hdfs://clusterName/usr/lib/hbase/lib/hbase-client-0.98.6-cdh5.2.1.jar at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1083) at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1075) at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1075) at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.getFileStatus(ClientDistributedCacheManager.java:288) at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.getFileStatus(ClientDistributedCacheManager.java:224) at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.determineTimestamps(ClientDistributedCacheManager.java:93) at org.apache.hadoop.mapreduce.filecache.ClientDistributedCacheManager.determineTimestampsAndCacheVisibilities(ClientDistributedCacheManager.java:57) at org.apache.hadoop.mapreduce.JobSubmitter.copyAndConfigureFiles(JobSubmitter.java:265) at org.apache.hadoop.mapreduce.JobSubmitter.copyAndConfigureFiles(JobSubmitter.java:301) at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:394) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1295) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1292) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614) at org.apache.hadoop.mapreduce.Job.submit(Job.java:1292) at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1313) at org.apache.hadoop.hbase.mapreduce.RowCounter.main(RowCounter.java:191) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72) at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:145) at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:153)
所以，问题是环境问题：当我将下面的jar添加到/ usr / lib / hadoop / lib中时。 一切都很好
hbase-client-0.98.6-cdh5.2.1.jar hbase-common-0.98.6-cdh5.2.1.jar hbase-protocol-0.98.6-cdh5.2.1.jar hbase-server-0.98.6-cdh5.2.1.jar hbase-prefix-tree-0.98.6-cdh5.2.1.jar hadoop-core-2.5.0-mr1-cdh5.2.1.jar htrace-core-2.04.jar
我的机器里面有以下rpms：
>> rpm -qa | grep cdh zookeeper-3.4.5+cdh5.2.1+84-1.cdh5.2.1.p0.13.el6.x86_64 hadoop-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64 hadoop-0.20-mapreduce-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64 hbase-regionserver-0.98.6+cdh5.2.1+64-1.cdh5.2.1.p0.9.el6.x86_64 cloudera-cdh-5-0.x86_64 bigtop-utils-0.7.0+cdh5.2.1+0-1.cdh5.2.1.p0.13.el6.noarch bigtop-jsvc-0.6.0+cdh5.2.1+578-1.cdh5.2.1.p0.13.el6.x86_64 parquet-1.5.0+cdh5.2.1+38-1.cdh5.2.1.p0.12.el6.noarch hadoop-hdfs-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64 hadoop-mapreduce-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64 hadoop-0.20-mapreduce-tasktracker-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64 hbase-0.98.6+cdh5.2.1+64-1.cdh5.2.1.p0.9.el6.x86_64 avro-libs-1.7.6+cdh5.2.1+69-1.cdh5.2.1.p0.13.el6.noarch parquet-format-2.1.0+cdh5.2.1+6-1.cdh5.2.1.p0.14.el6.noarch hadoop-yarn-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64 hadoop-hdfs-datanode-2.5.0+cdh5.2.1+578-1.cdh5.2.1.p0.14.el6.x86_64
我仍然想知道丢失了哪个rpm。
即使我在CDH 5.2.0中遇到同样的问题。 作为一种解决方法，我手动将jar文件复制到hdfs，然后exception没有到来
您可以将hbase库路径添加到.bashrc文件，而不是手动将文件添加到HDFS。 将hbase中的lib文件夹添加到CLASSPATH。 另外，将hbase的类路径添加到HADOOP_CLASSPATH。
您的.bashrc文件应包含以下内容：
export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:`${HBASE_HOME}/bin/hbase classpath` export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:`${HBASE_HOME}/bin/hbase mapredcp` export CLASSPATH=${HBASE_HOME}/lib/*
注意：CLASSPATH应指向hbase安装文件夹的lib文件夹。 使用以下命令编译和运行Java代码。
javac Example.java java -classpath $CLASSPATH:. Example