Need to handle case where tablet has lots of delete entries
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Key: ACCUMULO-96
URL: https://issues.apache.org/jira/browse/ACCUMULO-96
Project: Accumulo
Issue Type: Bug
Components: tserver
Reporter: Keith Turner
Assignee: Keith Turner
Currently Accumulo only drops delete entries when its major compacting all
files. All files may never be compacted. Lots of delete entries building up
can be problematic for scan performance.
Possible solutions :
* Keep a count of the # of delete entries per file. Compact all when the
ratio of delete entries to entries crosses a threshold.
* When a scan encounters a tablet w/ a lot of delete entries, schedule a majc.
This is reactive, but removes the need for bookkeeping in the previous
solution.
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