[ https://issues.apache.org/jira/browse/HBASE-5313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13205978#comment-13205978 ]
Zhihong Yu commented on HBASE-5313: ----------------------------------- There're only two weeks before we branch 0.94 I think HFile v3 would be in 0.96, containing this feature and HBASE-5347. > Restructure hfiles layout for better compression > ------------------------------------------------ > > Key: HBASE-5313 > URL: https://issues.apache.org/jira/browse/HBASE-5313 > Project: HBase > Issue Type: Improvement > Components: io > Reporter: dhruba borthakur > Assignee: dhruba borthakur > > A HFile block contain a stream of key-values. Can we can organize these kvs > on the disk in a better way so that we get much greater compression ratios? > One option (thanks Prakash) is to store all the keys in the beginning of the > block (let's call this the key-section) and then store all their > corresponding values towards the end of the block. This will allow us to > not-even decompress the values when we are scanning and skipping over rows in > the block. > Any other ideas? -- 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