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https://issues.apache.org/jira/browse/OMID-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16103193#comment-16103193
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ASF GitHub Bot commented on OMID-74:
------------------------------------
GitHub user ohadshacham opened a pull request:
https://github.com/apache/incubator-omid/pull/13
[OMID-74] Efficient column family deletion in Row level conflict analysis
The idea is to use a qualifier to denote that all the columns of a specific
family were deleted.
Current implementation reads from HBase the entire family and then writes a
tombstone to each one of its cells.
The new implementation does not need to perform the read and only writes
the qualifier to denote that the family was deleted.
This is true only for Row level conflict detection since in Cell level we
need to read the cells and add these to the write set.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ohadshacham/incubator-omid
FamilyDeletionTombstone-squash
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-omid/pull/13.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #13
----
commit 35ba4c79b4d3f713c6c38f791d5898f778153e2a
Author: Ohad Shacham <[email protected]>
Date: 2017-07-27T13:12:31Z
[OMID-74] Efficient column family deletion in Row level conflict analysis
The idea is to use a qualifier to denote that all the columns of a specific
family were deleted.
Current implementation reads from HBase the entire family and then writes a
tombstone to each one of its cells.
The new implementation does not need to perform the read and only writes
the qualifier to denote that the family was deleted.
This is true only for Row level conflict detection since in Cell level we
need to read the cells and add these to the write set.
----
> Efficient column family deletion in Row level conflict analysis
> ---------------------------------------------------------------
>
> Key: OMID-74
> URL: https://issues.apache.org/jira/browse/OMID-74
> Project: Apache Omid
> Issue Type: New Feature
> Reporter: Ohad Shacham
>
> The idea is to use a qualifier to denote that all the columns of a specific
> family were deleted.
> Current implementation reads from HBase the entire family and then writes a
> tombstone to each one of its cells. The new implementation does not need to
> perform the read and only writes the qualifier to denote that the family was
> deleted. This is true only for Row level conflict detection since in Cell
> level we need to read the cells and add these to the write set.
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