错误描述

java.lang.NoClassDefFoundError: org/apache/htrace/SamplerBuilder
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:644)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:628)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:93)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2701)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2683)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:372)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
at org.apache.hadoop.hbase.util.CommonFSUtils.getRootDir(CommonFSUtils.java:314)
at org.apache.hadoop.hbase.util.CommonFSUtils.isValidWALRootDir(CommonFSUtils.java:364)
at org.apache.hadoop.hbase.util.CommonFSUtils.getWALRootDir(CommonFSUtils.java:340)
at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeFileSystem(HRegionServer.java:717)
at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:626)
at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:495)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:3105)
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:236)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:140)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:149)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:3123)
Caused by: java.lang.ClassNotFoundException: org.apache.htrace.SamplerBuilder
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 25 more
2022-11-23 10:24:58,727 ERROR [main] master.HMasterCommandLine: Master exiting
java.lang.RuntimeException: Failed construction of Master: class org.apache.hadoop.hbase.master.HMaster. 
at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:3112)
at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:236)
at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:140)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:149)
at org.apa che.hadoop.hbase.master.HMaster.main(HMaster.java:3123)
Caused by: java.lang.NoClassDefFoundError: org/apache/htrace/SamplerBuilder
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:644)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:628)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:149)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2667)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:93)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2701)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2683)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:372)
at org.apache.hadoop.fs.Path.getFileSystem(Path.java:295)
at org.apache.hadoop.hbase.util.CommonFSUtils.getRootDir(CommonFSUtils.java:314)
at org.apache.hadoop.hbase.util.CommonFSUtils.isValidWALRootDir(CommonFSUtils.java:364)
at org.apache.hadoop.hbase.util.CommonFSUtils.getWALRootDir(CommonFSUtils.java:340)
at org.apache.hadoop.hbase.regionserver.HRegionServer.initializeFileSystem(HRegionServer.java:717)
at org.apache.hadoop.hbase.regionserver.HRegionServer.<init>(HRegionServer.java:626)
at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:495)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.hadoop.hbase.master.HMaster.constructMaster(HMaster.java:3105)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.apache.htrace.SamplerBuilder
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 25 more

分析

缺少jar包

解决

复制 htrace.jar，执行下面命令：

cp /program/hbase-2.1.9/lib/client-facing-thirdparty/htrace-core-3.1.0-incubating.jar  /program/hbase-2.1.9/lib/