ragarkar commented on PR #4799: URL: https://github.com/apache/hbase/pull/4799#issuecomment-1264965698
> I do not fully understand why higher prefetched ratio leads to lower moving cost, if a region's hfiles have all been cached, after moving we need to fetched all the hfiles again, which is costly? If we are moving a region from server A to server B, if the prefetch ratio on B is higher than that on A, then the cost of moving the region is low. During region movement, there is a likelihood that the file is already prefetched on server B and hence there will be no need to prefetch it again. The changes done in HBASE-27313 already maintain a list of files which are already prefetched on the server. -- 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]
