charlesconnell opened a new pull request, #7407: URL: https://github.com/apache/hbase/pull/7407
I argue that in addition to flushing the master region, the `flushMasterStore()` RPC should also roll the WAL files being written by the HMaster. In clusters with small numbers of DataNodes (less than 9, in my experience), a rolling restart of the DataNodes will break WAL writers, in both HMasters and RegionServers. This can be worked around on RegionServers by calling `admin.rollWALWriter()` on every RegionServer after restarting each DataNode. Currently, there is no equivalent way to do this to an HMaster. I think the most elegant solution is to augment `admin.flushMasterStore()`. -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
