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Posted to issues@ozone.apache.org by GitBox <gi...@apache.org> on 2020/01/29 17:16:00 UTC
[GitHub] [hadoop-ozone] avijayanhwx commented on issue #466: HDDS-2869.
Handle pipeline bootstrap from SCM and create pipeline use case in Recon.
avijayanhwx commented on issue #466: HDDS-2869. Handle pipeline bootstrap from SCM and create pipeline use case in Recon.
URL: https://github.com/apache/hadoop-ozone/pull/466#issuecomment-579863624
> Thanks @avijayanhwx for implementing this. I tried it locally on a docker-compose cluster and found that Recon does not get new pipeline information.
>
> 1. Since now the recon container does not wait with startup, it received 0 pipelines initially:
> ```
> recon_1 | 2020-01-29 08:41:05,263 [main] INFO scm.ReconStorageContainerManagerFacade: Obtained 0 pipelines from SCM.
> recon_1 | 2020-01-29 08:41:05,264 [main] INFO scm.ReconPipelineManager: Recon has 0 pipelines in house.
> ```
>
>
> That would be OK, but when the pipelines were created a bit later, they did not show up in Recon. (I also checked with `WAITFOR` restored, 3+1 initial pipelines were received in that case, but I feel it's a bit timing-dependent.)
> 2. Closed the initial 3-node pipeline via `scmcli`, which eventually triggered creation of new one in SCM, but Recon never noticed.
>
> Can you please check?
@adoroszlai I have not wired up the DN-> Recon path by default since that may cause some unintended test failures before finishing the whole "Recon as a Passive SCM" feature. In my local, I test with the following configs added.
> OZONE-SITE.XML_ozone.recon.datanode.address=recon:9891
> OZONE-SITE.XML_ozone.recon.address=recon:9891
> OZONE-SITE.XML_ozone.recon.datanode.bind.host=recon
That will lead to pipelines being picked up by Recon.
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