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Running jobs should list all the jobs being run in the cluster #69

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jtomaszewski opened this issue May 14, 2018 · 4 comments

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@jtomaszewski
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commented May 14, 2018

Let's say I have 2 nodes, node_id: "1" and node_id: "2" running on the same redis server.

Currently, the "Failed", "Enqueued", "Scheduled" jobs properly list all jobs in the cluster (that is, jobs saved in Redis, no matter on what node is the VerkWeb being run).

Unfortunately, the "Running jobs" count and list lists only jobs running in the given node.

It would be cool if it would list all the jobs that are inprogress in all currently living nodes.

Possibly related to edgurgel/verk#157 ?

P.S. Until we implement it, we could mention it in the README and/or in VerkWeb interface.

@edgurgel

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commented May 30, 2018

Yeah 🤔 . Each VerkWeb exposes data about the co-located running jobs. We don't store all running jobs inside Redis to share across all VerkWeb instances because it can be a substantial amount of data. And because they can be short-lived jobs it would be just an unnecessary overhead. At least this was the reasoning behind.

I'm not sure what's the best approach in this case. Maybe we could keep track of "long-running jobs" somehow and every VerkWeb instance would be able to store and visualise them?

It's also possible (not ideal IMHO) for the user to set up a GenStage consumer that reads data about every job and keeps this info somewhere (your own DB). More here: https://github.com/edgurgel/verk#error-tracking

@jtomaszewski

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commented May 31, 2018

I see. Seems like it's not that easy and maybe not even required (most of jobs are short-lived IMO).

Maybe we could mention it in the VerkWeb interface at least, so we avoid confusions. Like add a small warning alert above the "Running" list, that it is the list only for the current instance. WDYT? I can do a PR if u want

@edgurgel

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commented Jun 9, 2018

Yeah that would be great! 👍

@suddenrushofsushi

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commented Feb 13, 2019

Perhaps a list of nodes active in the cluster would be more helpful, including the ability to bounce around inspecting each node.

For example, I may have between 2 to 40 (or more) background processors running across a cluster (auto-scaling).

Being able to use a single verk_web instance to enumerate them and pop in to see what any given node is chewing on would be really cool.

(apologies for the near-necro on this issue, btw)

@edgurgel edgurgel referenced this issue Jun 9, 2019

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Verk 2.0 #192

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