[
https://issues.apache.org/jira/browse/HBASE-23602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17011087#comment-17011087
]
Lars Hofhansl commented on HBASE-23602:
---------------------------------------
You can set KEEP_DELETED_CELLS=TTL (you can set that to true, false, and TTL),
and get what you want, I think.
> TTL Before Which No Data is Purged
> ----------------------------------
>
> Key: HBASE-23602
> URL: https://issues.apache.org/jira/browse/HBASE-23602
> Project: HBase
> Issue Type: New Feature
> Reporter: Geoffrey Jacoby
> Assignee: Geoffrey Jacoby
> Priority: Major
> Fix For: 3.0.0, 2.3.0, 1.6.0
>
>
> HBase currently offers operators a choice. They can set
> KEEP_DELETED_CELLS=true and VERSIONS to max value, plus no TTL, and they will
> always have a complete history of all changes (but high storage costs and
> penalties to read performance). Or they can have KEEP_DELETED_CELLS=false and
> VERSIONS/TTL set to some reasonable values, but that means that major
> compactions can destroy the ability to do a consistent snapshot read of any
> prior time. (This limits the usefulness and correctness of, for example,
> Phoenix's SCN lookback feature.)
> I propose having a new TTL property to give a minimum age that an expired or
> deleted Cell would have to achieve before it could be purged. (I see that
> HBASE-10118 already does something similar for the delete markers
> themselves.)
> This would allow operators to have a consistent history for some finite
> amount of recent time while still purging out the "long tail" of obsolete /
> deleted versions.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
