Sebastian Nagel created NUTCH-2518:
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Summary: Must check return value of job.waitForCompletion()
Key: NUTCH-2518
URL: https://issues.apache.org/jira/browse/NUTCH-2518
Project: Nutch
Issue Type: Bug
Components: crawldb, fetcher, generator, hostdb, linkdb
Affects Versions: 1.15
Reporter: Sebastian Nagel
Fix For: 1.15
The return value of job.waitForCompletion() of the new MapReduce API
(NUTCH-2375) must always be checked. If it's not true, the job has been failed
or killed. Accordingly, the program
- should not proceed with further jobs/steps
- must clean-up temporary data, unlock CrawlDB, etc.
- exit with non-zero exit value, so that scripts running the crawl workflow can
handle the failure
Cf. NUTCH-2076, NUTCH-2442, [NUTCH-2375 PR
#221|https://github.com/apache/nutch/pull/221#issuecomment-332941883].
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