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Posted to issues@nifi.apache.org by "Mark Payne (JIRA)" <ji...@apache.org> on 2017/12/17 21:31:00 UTC

[jira] [Created] (NIFI-4702) Grok Record Reader applies regex to each line twice in some situations

Mark Payne created NIFI-4702:
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             Summary: Grok Record Reader applies regex to each line twice in some situations
                 Key: NIFI-4702
                 URL: https://issues.apache.org/jira/browse/NIFI-4702
             Project: Apache NiFi
          Issue Type: Bug
          Components: Extensions
            Reporter: Mark Payne
            Assignee: Mark Payne


When using the Grok Record Reader, it reads the next line from the stream to check if it needs to be appended to the record, is the start of a stack trace, etc. When this is done, if the next line matches the configured pattern, it is stored as 'nextLine' but we don't store the Map that is obtained from calling captures(). This means that the next iteration of nextRecord() must re-evaluate the regexes against 'nextLine'. We should instead just keep the Map as a member variable.



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