apache/hadoop · error · IOException
Job failed!
Error message
Job failed!
What it means
Error "Job failed!" thrown in apache/hadoop.
Source
Thrown at hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobClient.java:875
return stats;
} catch (InterruptedException ie) {
throw new IOException(ie);
}
}
/**
* Utility that submits a job, then polls for progress until the job is
* complete.
*
* @param job the job configuration.
* @throws IOException if the job fails
*/
public static RunningJob runJob(JobConf job) throws IOException {
JobClient jc = new JobClient(job);
RunningJob rj = jc.submitJob(job);
try {
if (!jc.monitorAndPrintJob(job, rj)) {
throw new IOException("Job failed!");
}
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
}
return rj;
}
/**
* Monitor a job and print status in real-time as progress is made and tasks
* fail.
* @param conf the job's configuration
* @param job the job to track
* @return true if the job succeeded
* @throws IOException if communication to the JobTracker fails
*/
public boolean monitorAndPrintJob(JobConf conf,
RunningJob job
) throws IOException, InterruptedException {View on GitHub (pinned to 2add963021)
Solutions
- Inspect the job's task logs and counters to find the failing task, fix the underlying cause, and resubmit the job.
When it happens
Trigger: Thrown at hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapred/JobClient.java:875 when the library encounters an invalid state.
Common situations: See trigger scenarios.
AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22).
Data as JSON: /api/errors/44dca0b70623c83a.
Report an issue: GitHub.