我在hadoop中工作，当我为我的图像处理程序创建runnable jar时，突然发生了这个错误，它与opencv本机库路径有关
使用eclipse时，我可以使用以下方法设置路径：
//system.loadlibrary（core.native\u library\u name）；
但是当使用hadoop执行runnable jar时，它会给出错误。有人能纠正吗？
hduser@master:/home/mnh/Desktop$ hadoop jar opencv19.jar /usr/local/hadoop/input/cars.mp4 /usr/local/hadoop/cars89
17/06/07 16:15:37 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/06/07 16:15:39 INFO client.RMProxy: Connecting to ResourceManager at master/192.168.137.52:8050
17/06/07 16:15:40 WARN mapreduce.JobSubmitter: Hadoop command-line option parsing not performed. Implement the Tool interface and execute your application with ToolRunner to remedy this.
17/06/07 16:16:08 INFO input.FileInputFormat: Total input paths to process : 1
17/06/07 16:16:08 INFO mapreduce.JobSubmitter: number of splits:1
17/06/07 16:16:09 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1496831815466_0009
17/06/07 16:16:09 INFO impl.YarnClientImpl: Submitted application application_1496831815466_0009
17/06/07 16:16:09 INFO mapreduce.Job: The url to track the job: http://master:8088/proxy/application_1496831815466_0009/
17/06/07 16:16:09 INFO mapreduce.Job: Running job: job_1496831815466_0009
17/06/07 16:16:20 INFO mapreduce.Job: Job job_1496831815466_0009 running in uber mode : false
17/06/07 16:16:20 INFO mapreduce.Job: map 0% reduce 0%
17/06/07 16:16:29 INFO mapreduce.Job: Task Id : attempt_1496831815466_0009_m_000000_0, Status : FAILED
Error: no libopencv_core.so in java.library.path
17/06/07 16:16:37 INFO mapreduce.Job: Task Id : attempt_1496831815466_0009_m_000000_1, Status : FAILED
Error: no libopencv_core.so in java.library.path
17/06/07 16:16:45 INFO mapreduce.Job: Task Id : attempt_1496831815466_0009_m_000000_2, Status : FAILED
Error: no libopencv_core.so in java.library.path
17/06/07 16:16:54 INFO mapreduce.Job: map 100% reduce 100%
17/06/07 16:16:55 INFO mapreduce.Job: Job job_1496831815466_0009 failed with state FAILED due to: Task failed task_1496831815466_0009_m_000000
Job failed as tasks failed. failedMaps:1 failedReduces:0
17/06/07 16:16:56 INFO mapreduce.Job: Counters: 12
Job Counters
Failed map tasks=4
Launched map tasks=4
Other local map tasks=3
Data-local map tasks=1
Total time spent by all maps in occupied slots (ms)=26582
Total time spent by all reduces in occupied slots (ms)=0
Total time spent by all map tasks (ms)=26582
Total vcore-seconds taken by all map tasks=26582
Total megabyte-seconds taken by all map tasks=27219968
Map-Reduce Framework
CPU time spent (ms)=0
Physical memory (bytes) snapshot=0
Virtual memory (bytes) snapshot=0
1条答案
按热度按时间s5a0g9ez1#
您收到的错误消息与工人无法使用opencv有关，因为它未安装在相应的计算机上。因此，解决方案是在安装了nodemanager组件（将执行任务的组件）的集群计算机上安装opencv。可以使用
System.loadLibrary()方法，则需要添加so文件到PATH系统变量。