Pchelolo created this task.
Pchelolo added projects: Services (doing), Wikidata.

TASK DESCRIPTION

After we've started posting the job events into #eventbus and Kafka, we've noticed that some of them were rejected by Kafka because of MESSAGE_SIZE_TOO_LARGE error. The limit was increased from 1 Mb to 4Mb, but even after the increase some events are still sometimes rejected. Digging deeper I've found that there are some enormously large jobs.

Example 17 Mb in size originally, I've shortened it.

{
    "meta": {
        "domain": "commons.wikimedia.org",
        "uri": "https://commons.wikimedia.org/wiki/Special:Badtitle/JobSpecification",
        "topic": "mediawiki.job.wikibase-InjectRCRecords",
        "request_id": "faa2e213-fc18-4bd0-9ef1-b716360260a6",
        "schema_uri": "mediawiki/job/1",
        "dt": "2017-09-07T21:59:38+00:00",
        "id": "d80f03e5-9417-11e7-9459-141877615224"
    },
    "page_title": "Special:Badtitle/JobSpecification",
    "database": "commonswiki",
    "params": {
        "pages": {
            "17303097": [6, "'A_Missionary_Preaching_to_the_Natives,_under_a_Skreen_of_platted_Cocoa-nut_leaves_at_Kairua'_by_William_Ellis.jpg"],
            "14883442": [6, "PL_J\\u00f3zef_Ignacy_Kraszewski-Lubonie_tom_II_077.jpeg"],
            "2653965": [6, "Meyers_b9_s0043.jpg"]
        },
        "change": {
            "info": "...",
            "user_id": "194202",
            "object_id": "Q36180",
            "time": "20170907215252",
            "revision_id": "553663638",
            "type": "wikibase-item~update",
            "id": 550757876
        }
    },
    "type": "wikibase-InjectRCRecords",
    "page_namespace": -1
}

TASK DETAIL
https://phabricator.wikimedia.org/T175316

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To: Pchelolo
Cc: daniel, GWicke, Aklapper, Pchelolo, GoranSMilovanovic, QZanden, Izno, Eevans, mobrovac, Hardikj, Wikidata-bugs, aude, Mbch331
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