[ https://issues.apache.org/jira/browse/HBASE-11876?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14119443#comment-14119443 ]
Lars Hofhansl commented on HBASE-11876: --------------------------------------- Sorry was traveling today. Was just finding some time to make a quick patch, and it's already done. :) Belated +1 on patch then, that's almost exactly how I would have coded it up. Should be a nice improvement. > RegionScanner.nextRaw(...) should not update metrics > ---------------------------------------------------- > > Key: HBASE-11876 > URL: https://issues.apache.org/jira/browse/HBASE-11876 > Project: HBase > Issue Type: Bug > Affects Versions: 0.98.6 > Reporter: Lars Hofhansl > Assignee: Andrew Purtell > Fix For: 0.99.0, 2.0.0, 0.98.6 > > Attachments: HBASE-11876-0.98.patch, HBASE-11876.patch, > HBASE-11876.patch > > > I added the RegionScanner.nextRaw(...) to allow "smart" client to avoid some > of the default work that HBase is doing, such as {start|stop}RegionOperation > and synchronized(scanner) for each row. > Metrics should follow the same approach. Collecting them per row is expensive > and a caller should have the option to collect those later or to avoid > collecting them completely. > We can also save some cycles in RSRcpServices.scan(...) if we updated the > metric only once/batch instead of each row. -- This message was sent by Atlassian JIRA (v6.3.4#6332)