Monitor and kill runaway UDFs
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Key: PIG-1427
URL: https://issues.apache.org/jira/browse/PIG-1427
Project: Pig
Issue Type: New Feature
Affects Versions: 0.8.0
Reporter: Dmitriy V. Ryaboy
Assignee: Dmitriy V. Ryaboy
As a safety measure, it is sometimes useful to monitor UDFs as they execute. It
is often preferable to return null or some other default value instead of
timing out a runaway evaluation and killing a job. We have in the past seen
complex regular expressions lead to job failures due to just half a dozen (out
of millions) particularly obnoxious strings.
It would be great to give Pig users a lightweight way of enabling UDF
monitoring.
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