Hi Bryan, could you please be more specific about the 1.x version that you are using? we have HBASE-13481 and HBASE-12954 so it depends on which version of 1.x you are using.
Regarding your account issue, I have created an INFRA JIRA on your behalf to look into your account problem. thanks, esteban. -- Cloudera, Inc. On Fri, May 22, 2015 at 10:17 AM, Bryan Beaudreault < [email protected]> wrote: > In our system each server has 2 dns associated with it, one always points > to a private address and the other to public or private depending on the > context. > > This issue did not show up in 0.94.x, but is showing up on my new 1.x > cluster. Basically it goes like this: > > 1. Regionserver starts up, get's its hostname which returns > `hostA.external` due to our /etc/hosts > 2. Regionserver registers itself in zookeeper as `hostA.external` > 3. Regionserver reports for duty in to HMaster, which re-resolves the DNS > and returns `hostA.internal`. > 4. HMaster registers server as `hostA.internal` > 5. Regionserver receives the RegionServerStartupResponse, which contains > `hostA.internal` and uses that for its RPCs > 6. HMaster sees a ZNode with `hostA.external`, so thinks it is a > regionserver that hasn't checked in yet, and registers it. > > So I think the problem is that step #2 happens before step #5. You can > clearly see this in the HRegionServer.java run() function. > > In 0.94, the `createMyEphemeralNode` function was called within > `handleReportForDutyResponse`. In 1.x, it happens within `run()` BEFORE > `handleReportForDutyResponse`. > > > I can work around this by handling /etc/hosts specially for my > regionservers. We have our /etc/hosts file set up like this for a reason, > but I think I can special case regionservers. > > However, it seems like a bug that there are mechanisms built in for the > HMaster to determine the RegionServer hostname, but that these mechanisms > do not account for doubly-registered regionservers due to zookeeper and > hmaster mismatch. > > I tried to create a JIRA for this, but either my username no longer has > permissions for creating, or I can't find the place to create them > anymore. Any help? > https://issues.apache.org/jira/secure/ViewProfile.jspa?name=bbeaudreault >
