On Wed, Jan 27, 2016 at 01:05AM, Evans Ye wrote: > Oh, if I made you uncomfortable, you know I didn't mean that :)
Oh believe me - it takes a lot more than that to make me uncomfortable ;) Besides, you gave me an opportunity to speak up about the SPOFs in the Hadoop ecosystem. Which I can do for hours! > I just want to know more about the design because I'm always interested in > the architecture things, especially when I see something different. > Even Spark just added HA in their master in recent release last year. So > it's totally fine. > > And the following is just for the discussion: > >> Just a side node: as you know literally _all_ components in Hadoop-based >> stack have SPOF. > > I think it's more related to the maturity of a component, but somehow it > will get there to eliminate the SPOF just like what HDFS, YARN, Oozie, Spark > did. For operations, two SPOFs is good enough for them to have a good sleep > at night ;) It might be ok for Oozie, but not for a file system. Because once your master has failed over to the standby you don't know how long that one has. It might crash in 5 months or in 2 minutes. That's why if you're an admin for a production critical cluster you'll get paged immediately. Perhaps 3 o'clock in the morning. I spent last three years working on the active-active software for mission critical systems, so I would love to share some architectural thoughts with you, if you're interested. Cos > 2016-01-26 12:08 GMT+08:00 Jay Vyas <[email protected]>: > > > Awesome! It's great to hear about another HDFS alternative :) > > > > , We tried pretty hard to make bigtop more "HCFS" compliant, by adding the > > init hcfs tooling and so on, but never completed making the puppet recipes > > add support for other file systems. > > > > > > Would be very interesting to see if the quant cast team can take over on > > the HCFS integration so that bigtop is a home for more Than just one under > > filesystem . > > > > Let us know what your planning on working on, looking forward to it...! > > > > > > > > > > > On Jan 25, 2016, at 9:06 PM, Faraaz Sareshwala < > > [email protected]> wrote: > > > > > > Hello everyone in the Bigtop community! > > > > > > My name is Faraaz Sareshwala and I am an engineer working at Quantcast > > to integrate QFS (https://quantcast.github.io/qfs) into the Bigtop > > project. I just wanted to send a small note out to introduce myself to the > > community and announce that we are working on an integration. Feel free to > > reach out to me if you have any questions about QFS, our integration, or > > Quantcast itself. > > > > > > At this point, I am nearly complete integrating QFS. I plan to submit a > > patch through github and JIRA later in the week or early next week once I > > get a chance to test everything is working correctly. I’ve read the wiki on > > contribution to the project, but if you guys have any other tips or > > guidance for me, I’d really appreciate that. > > > > > > Patch coming soon! > > > > > > Take care, > > > Faraaz > > > > >
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