Apache9 commented on pull request #2113: URL: https://github.com/apache/hbase/pull/2113#issuecomment-662844100
I haven't gotten the point of 'Unknown Servers' here. When setting up a region server, we will create a WAL directory for it. And when restarting master, we will pull the current set of region servers from zookeeper, and compare with the WAL directories listed from the WAL filesystem, and if there are some directories on the WAL filesystem, but not on zookeeper, we will schedule SCP for them. So what is the real problem here? The waiting for namespace table online prevents us scheduling SCPs for dead servers? Or we just lost the WAL directories for region servers? If latter, we will lose data? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
