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https://issues.apache.org/jira/browse/HBASE-17167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15691902#comment-15691902
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Enis Soztutar commented on HBASE-17167:
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Good news is that we discard the partial results if we restart the scanner in
case allowPartialResults=false. Of course if we make it so that allow partials
= true will also see the row atomically, it will be way better.
Also see HBASE-9797. We need to track the read point not just for partial
results, but across rows as well in case multi-row transactions are used (like
we do in meta for example).
> Pass mvcc to client when scan
> -----------------------------
>
> Key: HBASE-17167
> URL: https://issues.apache.org/jira/browse/HBASE-17167
> Project: HBase
> Issue Type: Sub-task
> Components: Client, scan
> Reporter: Duo Zhang
> Fix For: 2.0.0, 1.4.0
>
>
> For the current implementation, if we use batch or allowPartial when scan,
> then the row level atomic can not be guaranteed if we need to restart a scan
> in the middle of a record due to region move or something else.
> We can return the mvcc used to open scanner to client and client could use
> this mvcc to restart a scan to get row level atomic.
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