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https://issues.apache.org/jira/browse/OMID-142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16808462#comment-16808462
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Yonatan Gottesman commented on OMID-142:
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The compaction does not delete all cells that have a delete tumbstone. It only
clears the ones that have ts lower the low_watermark. This is because there
could be some live transactions that are above the watermark but below the
delete commit timestamp, so they should read the deleted data.
If I run omid without phoenix and do some deletes and then restart the tso
(bumping the lwm) and then compacting the cells are deleted.
with phoenix this doesnt happen im still debugging it, Im not sure i understand
this yet maybe phoenix has its own delete mark?
> Omid GC fails in Phoenix does not remove all data
> -------------------------------------------------
>
> Key: OMID-142
> URL: https://issues.apache.org/jira/browse/OMID-142
> Project: Apache Omid
> Issue Type: Bug
> Affects Versions: 1.0.1
> Reporter: Lars Hofhansl
> Assignee: Yonatan Gottesman
> Priority: Major
>
> When you insert a bunch of data into a table, followed by a DELETE FROM
> <table>, then flush and compact the table in HBase, the data is not removed.
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