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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (METRON-1761) Allow a grok statement to be applied to each line in a file.
Date Thu, 04 Oct 2018 15:52:00 GMT


ASF GitHub Bot commented on METRON-1761:

GitHub user ottobackwards reopened a pull request:

    METRON-1761, allow application of grok statement multiple times

    This PR adds support for incoming messages to grok parsers that have multiple log lines.
    Instead of having to split the logs before sending to metron/kafka, you could just send
the logs in batches.
    # todo testing
    ### For all changes:
    - [x] Is there a JIRA ticket associated with this PR? If not one needs to be created at
[Metron Jira](
    - [x] Does your PR title start with METRON-XXXX where XXXX is the JIRA number you are
trying to resolve? Pay particular attention to the hyphen "-" character.
    - [x] Has your PR been rebased against the latest commit within the target branch (typically
    ### For code changes:
    - [-] Have you included steps to reproduce the behavior or problem that is being changed
or addressed?
    - [ ] Have you included steps or a guide to how the change may be verified and tested
    - [x] Have you ensured that the full suite of tests and checks have been executed in the
root metron folder via:
      mvn -q clean integration-test install && dev-utilities/build-utils/

    - [x] Have you written or updated unit tests and or integration tests to verify your changes?
    - [-] If adding new dependencies to the code, are these dependencies licensed in a way
that is compatible for inclusion under [ASF 2.0](
    - [ ] Have you verified the basic functionality of the build by building and running locally
with Vagrant full-dev environment or the equivalent?
    ### For documentation related changes:
    - [-] Have you ensured that format looks appropriate for the output in which it is rendered
by building and verifying the site-book? If not then run the following commands and the verify
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      cd site-book
      mvn site

You can merge this pull request into a Git repository by running:

    $ git pull grok-split

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1184
commit 498313a8c12bcc15c8a179f5a97afff1d673d0b2
Author: Otto Fowler <ottobackwards@...>
Date:   2018-09-04T10:50:38Z

    METRON-1761, allow application of grok statement multiple times

commit 05b734cf18be120cbabea554a0d84bb0164193c9
Author: Otto Fowler <ottobackwards@...>
Date:   2018-09-28T14:17:41Z

    Merge remote-tracking branch 'apache/master' into grok-split

commit c2b3bb88d2a06e5cde39fd90a87f92207906eac4
Author: Otto Fowler <ottobackwards@...>
Date:   2018-09-28T15:40:37Z

    per review, do not require derivation

commit 91764c924a7a85e4f8146105857234ad7b046c72
Author: Otto Fowler <ottobackwards@...>
Date:   2018-10-02T13:12:56Z

    Merge remote-tracking branch 'apache/master' into grok-split


> Allow a grok statement to be applied to each line in a file.
> ------------------------------------------------------------
>                 Key: METRON-1761
>                 URL:
>             Project: Metron
>          Issue Type: Improvement
>            Reporter: Laurens Vets
>            Assignee: Otto Fowler
>            Priority: Minor
> Make grok work where each line in incoming logs is a separate unit to be parsed.
> This would for instance allow NiFi to pick up log files (whereby each line is to be parsed
separately) and send them to Metron without having to split the content.
> Example content of a log file where a grok statement needs to be applied to each line:
> {code:java}
> 2015-05-13T23:39:43.945958Z my-loadbalancer 0.000073
0.001048 0.000057 200 200 0 29 "GET HTTP/1.1" "curl/7.38.0" - -
> 2015-05-13T23:39:43.945958Z my-loadbalancer 0.000086
0.001048 0.001337 200 200 0 57 "GET HTTP/1.1" "curl/7.38.0" DHE-RSA-AES128-SHA
> 2015-05-13T23:39:43.945958Z my-loadbalancer 0.001069
0.000028 0.000041 - - 82 305 "- - - " "-" - -
> 2015-05-13T23:39:43.945958Z my-loadbalancer 0.001065
0.000015 0.000023 - - 57 502 "- - - " "-" ECDHE-ECDSA-AES128-GCM-SHA256 TLSv1.2{code}

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