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https://issues.apache.org/jira/browse/METRON-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16546722#comment-16546722
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ASF GitHub Bot commented on METRON-1657:
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Github user cestella commented on a diff in the pull request:
https://github.com/apache/metron/pull/1099#discussion_r203052624
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You need to add the license header here.
> Parser aggregation in storm
> ---------------------------
>
> Key: METRON-1657
> URL: https://issues.apache.org/jira/browse/METRON-1657
> Project: Metron
> Issue Type: Bug
> Reporter: Justin Leet
> Assignee: Justin Leet
> Priority: Major
>
> Currently our parsing solution requires one storm topology per sensor. It has
> been complained that this may be wasteful of resources and that, rather than
> one storm topology per sensor, it would be advantageous to have multiple
> sensors in the same topology. The benefit to this is that it would require
> fewer storm slots.
> The issue with this is that whenever we've aggregated functionality like this
> before, we've run into issues appropriately being able to scale storm (e.g.
> batch vs random access indexing in the same topology). The main point in
> addressing this is to recommend that parsers with similar velocities and
> complexity are grouped together.
> Particularly for a first cut, leave the configuration mostly as-is, while
> allowing for comma separated lists of sensors in start_parser_topology.sh
> (e.g. bro,yaf creates a aggregated parser consisting of those two).
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