Question

我正在尝试运行一个简单的MapReduce进程来编写HFile，以便以后导入到HBase表中。

提交作业时：

hbase com.pcoa.Driver /test /bulk pcoa

我收到以下异常，表明HDFS中不存在netty-3.6.6.Final.jar（但确实存在）。

    -rw-r--r--+ 1 mbeening flprod 1206119 Sep 18 18:25 /dedge1/hadoop/hbase-0.96.1.1-hadoop2/lib/netty-3.6.6.Final.jar

我担心我不明白如何解决此配置（？）错误。

任何人都可以向我提出任何建议吗？

以下是例外：

    Exception in thread "main" java.io.FileNotFoundException: File does not exist:     hdfs://localhost/dedge1/hadoop/hbase-0.96.1.1-hadoop2/lib/netty-3.6.6.Final.jar
    at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1110)
    at org.apache.hadoop.hdfs.DistributedFileSystem$17.doCall(DistributedFileSystem.java:1102)
    at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
    at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1102)
    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:264)
    at org.apache.hadoop.mapreduce.JobSubmitter.copyAndConfigureFiles(JobSubmitter.java:300)
    at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:387)
    at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1268)
    at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1265)
    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:1491)
    at org.apache.hadoop.mapreduce.Job.submit(Job.java:1265)
    at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1286)
    at com.pcoa.Driver.main(Driver.java:63)

这是我的驱动程序例程：

public class Driver {

public static void main(String[] args) throws Exception {

    Configuration conf = new Configuration();
    Job job = new Job(conf, "HBase Bulk Import");

    job.setJarByClass(HBaseKVMapper.class);
    job.setMapperClass(HBaseKVMapper.class);
    job.setMapOutputKeyClass(ImmutableBytesWritable.class);
    job.setMapOutputValueClass(KeyValue.class);

    job.setInputFormatClass(TextInputFormat.class);

    HTable hTable = new HTable(conf, args[2]);
    HFileOutputFormat.configureIncrementalLoad(job, hTable);

    FileInputFormat.addInputPath(job, new Path(args[0]));
    FileOutputFormat.setOutputPath(job, new Path(args[1]));

    job.waitForCompletion(true);
}
}

Answer 1

我不知道为什么/如果我必须这样做（在任何一个启动文档中都没有看到这样的内容）

但我跑了其中一个：

hdfs dfs -put /hadoop/hbase-0.96.1.1-hadoop2/lib/*.jar /hadoop/hbase-0.96.1.1-hadoop2/lib

......我的MR工作现在似乎已经开始了

如果这是一个不正确的课程 - 请告诉我谢谢！

HBase批量加载MapReduce HFile异常（netty jar）

1 个答案: