[ https://issues.apache.org/jira/browse/HBASE-13421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Lawlor updated HBASE-13421: ------------------------------------ Attachment: (was: HBASE-11544-addendum-v3.patch) > Reduce the number of object creations introduced by HBASE-11544 in scan RPC > hot code paths > ------------------------------------------------------------------------------------------ > > Key: HBASE-13421 > URL: https://issues.apache.org/jira/browse/HBASE-13421 > Project: HBase > Issue Type: Sub-task > Reporter: Jonathan Lawlor > Assignee: Jonathan Lawlor > Fix For: 2.0.0, 1.1.0 > > Attachments: HBASE-13421-v1.patch > > > HBASE-11544 made NextState the new return type of RegionScanner#nextRaw > InternalScanner#next to allow state information to be passed back from a > scanner (it was formerly a boolean indicating whether or not more values > existed). The change in this return type led to an increased amount of > objects being created... In the case that a scan spanned millions of rows, > there was the potential for millions of object to be created. > This issue looks to reduce the large amount of object creations from > potentially many to at most one per RPC request. > Please see the tail of the parent issue for relevant discussion on the design > decisions related to this solution. This sub-task has been filed as it seems > more appropriate to address the fix here rather than as an addendum to the > parent. -- This message was sent by Atlassian JIRA (v6.3.4#6332)