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Anoop Sam John commented on HBASE-17204: ---------------------------------------- Agree Stack. There are some jiras which must be fixed before doing this. I will link whatever am coming across.. Pls link if any thing is missing. There is also another issue of memory wastage by BC which is raised by [~dvdreddy]. That is also a blocker. > Make L2 off heap cache default ON > --------------------------------- > > Key: HBASE-17204 > URL: https://issues.apache.org/jira/browse/HBASE-17204 > Project: HBase > Issue Type: Improvement > Affects Versions: 2.0.0 > Reporter: Anoop Sam John > Assignee: Anoop Sam John > Fix For: 2.0.0 > > > L2 cache can be used for data blocks. By default it is off now. After > HBASE-11425 work, L2 off heap cache can equally perform with L1 on heap > cache. On heavy loaded workload, this can even out perform L1 cache. Pls see > recently published report by Alibaba. Also this work was backported by > Rocketfuel and similar perf improvement report from them too. > Let us turn L2 off heap cache ON. As it is off heap, we can have much larger > sized L2 BC. What should be the default size? -- This message was sent by Atlassian JIRA (v6.3.4#6332)