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https://issues.apache.org/jira/browse/OMID-85?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354365#comment-16354365
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ASF GitHub Bot commented on OMID-85:
------------------------------------

Github user ebortnikov commented on a diff in the pull request:

    https://github.com/apache/incubator-omid/pull/20#discussion_r166407100
  
    --- Diff: 
hbase-client/src/main/java/org/apache/omid/transaction/TTable.java ---
    @@ -293,15 +293,11 @@ public void delete(Transaction tx, Delete delete) 
throws IOException {
     
         }
     
    -    /**
    -     * Transactional version of {@link HTableInterface#put(Put put)}
    -     *
    -     * @param put an instance of Put
    -     * @param tx  an instance of transaction to be used
    -     * @throws IOException if a remote or network exception occurs.
    -     */
    -    public void put(Transaction tx, Put put) throws IOException {
    +    interface UpdateMetaData {
    --- End diff --
    
    What is the scope of this interface? Why is it package-level? 


> Autocommit
> ----------
>
>                 Key: OMID-85
>                 URL: https://issues.apache.org/jira/browse/OMID-85
>             Project: Apache Omid
>          Issue Type: Sub-task
>            Reporter: Ohad Shacham
>            Assignee: Ohad Shacham
>            Priority: Major
>
> Writing directly to HBase using specific version marks the write as a write 
> that was done by a specific transaction. However, due to lack of shadow 
> cells, getting the commit timestamp of the transaction can be done only by 
> access the commit table. The motivation of this feature is to add the shadow 
> cells during the write and save the commit table access.
> This feature is required by Apache Phoenix that during index creation adds 
> the data table's entries, appeared before creation, to the index. In this 
> case, the version and the commit timestamp should be the fence id and 
> therefore, a direct write to HBase with the addition of shadow cells is 
> required.



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