在集群上执行mr(操作hbase)任务报错

阅读更多

通过eclipse 插件远程提交mr(有操作hbase)任务到集群执行没有问题，

打成jar包在集群上执行报错，错误如下：

15/04/19 00:20:40 WARN client.HConnectionManager$HConnectionImplementation: Encountered problems when prefetch hbase:meta table:
org.apache.hadoop.hbase.DoNotRetryIOException: java.lang.IllegalAccessError: class com.google.protobuf.HBaseZeroCopyByteString cannot access its superclass com.google.protobuf.LiteralByteString
        at org.apache.hadoop.hbase.client.RpcRetryingCaller.translateException(RpcRetryingCaller.java:215)
        at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:127)
        at org.apache.hadoop.hbase.client.HTable.getRowOrBefore(HTable.java:705)
        at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:144)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.prefetchRegionCache(HConnectionManager.java:1107)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1167)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:1059)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:1016)
        at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:326)
        at org.apache.hadoop.hbase.client.HTable.(HTable.java:192)
        at org.apache.hadoop.hbase.client.HTable.(HTable.java:150)
        at com.lyq.mr.File2HFile2HBase.getJob(File2HFile2HBase.java:105)
        at com.lyq.mr.File2HFile2HBase.access$1(File2HFile2HBase.java:93)
        at com.lyq.mr.File2HFile2HBase$1.run(File2HFile2HBase.java:71)
        at com.lyq.mr.File2HFile2HBase$1.run(File2HFile2HBase.java:1)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:337)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1471)
        at com.lyq.mr.File2HFile2HBase.run(File2HFile2HBase.java:62)
        at com.lyq.mr.File2HFile2HBase.main(File2HFile2HBase.java:124)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
Caused by: java.lang.IllegalAccessError: class com.google.protobuf.HBaseZeroCopyByteString cannot access its superclass com.google.protobuf.LiteralByteString
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
        at org.apache.hadoop.hbase.protobuf.RequestConverter.buildRegionSpecifier(RequestConverter.java:910)
        at org.apache.hadoop.hbase.protobuf.RequestConverter.buildGetRowOrBeforeRequest(RequestConverter.java:131)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRowOrBefore(ProtobufUtil.java:1403)
        at org.apache.hadoop.hbase.client.HTable$2.call(HTable.java:701)
        at org.apache.hadoop.hbase.client.HTable$2.call(HTable.java:699)
        at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:120)
        ... 23 more
Exception in thread "main" java.lang.IllegalAccessError: com/google/protobuf/HBaseZeroCopyByteString
        at org.apache.hadoop.hbase.protobuf.RequestConverter.buildRegionSpecifier(RequestConverter.java:910)
        at org.apache.hadoop.hbase.protobuf.RequestConverter.buildGetRowOrBeforeRequest(RequestConverter.java:131)
        at org.apache.hadoop.hbase.protobuf.ProtobufUtil.getRowOrBefore(ProtobufUtil.java:1403)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:1181)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:1059)
        at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:1016)
        at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:326)
        at org.apache.hadoop.hbase.client.HTable.(HTable.java:192)
        at org.apache.hadoop.hbase.client.HTable.(HTable.java:150)
        at com.lyq.mr.File2HFile2HBase.getJob(File2HFile2HBase.java:105)
        at com.lyq.mr.File2HFile2HBase.access$1(File2HFile2HBase.java:93)
        at com.lyq.mr.File2HFile2HBase$1.run(File2HFile2HBase.java:71)
        at com.lyq.mr.File2HFile2HBase$1.run(File2HFile2HBase.java:1)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:337)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1471)
        at com.lyq.mr.File2HFile2HBase.run(File2HFile2HBase.java:62)
        at com.lyq.mr.File2HFile2HBase.main(File2HFile2HBase.java:124)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:212)

原因：

这是hbase的一个bug,详细信息访问：

https://issues.apache.org/jira/browse/HBASE-10304

解决方法：

1、在集群环境变量 etc/profiles 里添加如下配置：

export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:/home/hadoop/hbase-0.96.2-hadoop2/lib/hbase-protocol-0.96.2-hadoop2.jar

注意：hbase-protocol-*.jar 的路径根据自己配置目录而定。

2、执行source /etc/profile，是配置生效