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From "Josh Elser (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-3010) minor compaction after recovery should not merge
Date Tue, 22 Jul 2014 18:24:39 GMT


Josh Elser commented on ACCUMULO-3010:

Ah, I see, thanks for the explanation [~bfloss].

In other words, it's proposed to remove the possibility for merging MinC's during the recovery
process because the merging MinC itself introduces a higher risk of error. I first read it
as a recovery using a merging MinC has explicit errors possible (not just additional risk)
which confused me. This makes sense to me and would also be a good idea because a merging
MinC would probably slow down recovery time due to the {{n log(n)}} cost of the merging minor
recovery over a normal MinC.

> minor compaction after recovery should not merge
> ------------------------------------------------
>                 Key: ACCUMULO-3010
>                 URL:
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.5.0, 1.5.1, 1.6.0
>            Reporter: Eric Newton
>            Priority: Minor
>             Fix For: 1.7.0
> Data ingested during recovery is saved to a file with a minor compaction. By allowing
a merging minor compaction, additional failures are possible.

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