[
https://issues.apache.org/jira/browse/ACCUMULO-3235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Christopher Tubbs reassigned ACCUMULO-3235:
-------------------------------------------
Assignee: Christopher Tubbs
> No-chop merges
> --------------
>
> Key: ACCUMULO-3235
> URL: https://issues.apache.org/jira/browse/ACCUMULO-3235
> Project: Accumulo
> Issue Type: Improvement
> Components: tserver
> Reporter: Christopher Tubbs
> Assignee: Christopher Tubbs
> Fix For: 1.8.0
>
>
> Merges currently require a special "chop" major compaction, which can be
> slow. The idea is simple: in the metadata entries for files, we track the
> range in use for that file with a notation.
> This additional metadata would be used to merge tablets without re-writing
> data. Only this extra metadata would be updated (to a narrower range when
> split, and possibly collapsed if merging adjacent ranges). If a range is
> missing for a file, the tablet's range will be used instead. This simplifies
> things for backwards compatibility, and means we don't need to include a
> redundant range if the tablet isn't splitting/merging.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
