[ https://issues.apache.org/jira/browse/HBASE-5492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
honghua zhu updated HBASE-5492: ------------------------------- Attachment: HBASE-5492.patch > Caching StartKeys and EndKeys of Regions > ---------------------------------------- > > Key: HBASE-5492 > URL: https://issues.apache.org/jira/browse/HBASE-5492 > Project: HBase > Issue Type: Improvement > Components: client > Affects Versions: 0.92.0 > Environment: all > Reporter: honghua zhu > Fix For: 0.92.1 > > Attachments: HBASE-5492.patch > > > Each call for HTable.getStartEndKeys will read meta table. > In particular, > in the case of client side multi-threaded concurrency statistics, > we must call HTable.coprocessorExec== > getStartKeysInRange ==> > getStartEndKeys, > resulting in the need to always scan the meta table. > This is not necessary, > we can implement the > HConnectionManager.HConnectionImplementation.locateRegions(byte[] tableName) > method, > then, get the StartKeys and EndKeys from the cachedRegionLocations of > HConnectionImplementation. > Combined with https://issues.apache.org/jira/browse/HBASE-5491, can improve > the performance of statistical -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira