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https://issues.apache.org/jira/browse/ACCUMULO-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946586#comment-13946586
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Eric Newton commented on ACCUMULO-1218:
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[~elserj] you can also get data back that had been compacted out.
Let's say we have a table in a single tablet that contains rows [a, b, d... x,
y, z]. The tablet splits to (-inf, m] and (m, +inf). Both tablets use the
file that contains [a...z].
Now I delete row a with a bunch of delete markers. The table contains [b, c,
... z].
I compact (-inf, m]. So I have [b...m] and [n...z] in separate tablets. But
remember, row a still lives in a file pointed to by (m, +inf).
If zookeeper dies, and I re-import files. Row a will return.
> document the recovery from a failed zookeeper
> ---------------------------------------------
>
> Key: ACCUMULO-1218
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1218
> Project: Accumulo
> Issue Type: Sub-task
> Components: docs
> Reporter: Eric Newton
> Assignee: Josh Elser
> Labels: Documentation
> Fix For: 1.6.0
>
> Attachments:
> 0001-ACCUMULO-1218-Overview-on-how-to-recover-an-instance.patch
>
>
> Document bulk-import based recovery of accumulo.
> Include a stern warning and possible data loss and unwanted data recovery.
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