wchevreuil commented on PR #8353: URL: https://github.com/apache/hbase/pull/8353#issuecomment-4707829936
> Mind explaining more about the changes here? I do not fully get what you are trying to fix here... As explained in the jira description: `When executing ycsb read workloads, we observed a ~30% latency degradation The problem was that we added logic for parsing the file Path into region name, family name, as well checks for archiving all on the BlockCacheKey constructor used by HFileReaderImpl on the beginning of each block read. As seen on the flame graphs attached covering a five minutes window on one of the RSes, around 30% of the CPU time was spent on the BlockCacheKey constructor, either calling Path.getParent() or HFileUtils.isHFileArchived().` -- 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]
