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Mikhail Bautin commented on HBASE-4683: --------------------------------------- @jdcryans: it looks like TestForceCacheImportantBlocks.java was not included into your trunk commit of this JIRA. I will verify that the test still works and post an addendum patch. > Always cache index and bloom blocks > ----------------------------------- > > Key: HBASE-4683 > URL: https://issues.apache.org/jira/browse/HBASE-4683 > Project: HBase > Issue Type: New Feature > Reporter: Lars Hofhansl > Assignee: Mikhail Bautin > Priority: Minor > Fix For: 0.94.0, 0.92.0 > > Attachments: 0001-Cache-important-block-types.patch, 4683-v2.txt, > 4683.txt, D807.1.patch, D807.2.patch, D807.3.patch, HBASE-4683-0.92-v2.patch, > HBASE-4683-v3.patch > > > This would add a new boolean config option: hfile.block.cache.datablocks > Default would be true. > Setting this to false allows HBase in a mode where only index blocks are > cached, which is useful for analytical scenarios where a useful working set > of the data cannot be expected to fit into the (aggregate) cache. > This is the equivalent of setting cacheBlocks to false on all scans > (including scans on behalf of gets). > I would like to get a general feeling about what folks think about this. > The change itself would be simple. > Update (Mikhail): we probably don't need a new conf option. Instead, we will > make index blocks cached by default. -- 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