Sebastian Nagel created NUTCH-2569:
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Summary: ClassNotFoundException when running in
(pseudo-)distributed mode
Key: NUTCH-2569
URL: https://issues.apache.org/jira/browse/NUTCH-2569
Project: Nutch
Issue Type: Bug
Affects Versions: 1.15
Reporter: Sebastian Nagel
Fix For: 1.15
The CrawlDb / updatedb job fails in pseudo-distributed mode with a
ClassNotFoundException:
{noformat}
18/04/22 19:24:49 INFO mapreduce.Job: Task Id :
attempt_1524395182329_0018_m_000000_0, Status : FAILED
Error: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class
org.apache.nutch.crawl.CrawlDbFilter not found
at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2369)
at
org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:175)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1836)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:169)
Caused by: java.lang.ClassNotFoundException: Class
org.apache.nutch.crawl.CrawlDbFilter not found
at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2273)
at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2367)
{noformat}
Must define the job jar by calling {{job.setJarByClass(...)}}. This affects
also other jobs.
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