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Nicolas Liochon commented on HBASE-10018: ----------------------------------------- v1: - remove the lock - does a small reversed scan instead of a getRowSomething and a scan - deprecates all the prefetch methods, keep the interfaces but the methods do nothing - when we were doing a locate *without* the cache, we were also removing the entry from the cache. We don't do that anymore. > Change the location prefetch > ---------------------------- > > Key: HBASE-10018 > URL: https://issues.apache.org/jira/browse/HBASE-10018 > Project: HBase > Issue Type: Bug > Affects Versions: 0.98.0, 0.96.0 > Reporter: Nicolas Liochon > Assignee: Nicolas Liochon > Priority: Minor > Fix For: 0.98.1, 0.99.0 > > Attachments: 10018.v1.patch > > > Issues with prefetching are: > - we do two calls to meta: one for the exact row, one for the prefetch > - it's done in a lock > - we take the next 10 regions. Why 10, why the 10 next? > - is it useful if the table has 100K regions? > Options are: > - just remove it > - replace it with a reverse scan: this would save a call > -- This message was sent by Atlassian JIRA (v6.1.5#6160)