[
https://issues.apache.org/jira/browse/HBASE-17584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15884210#comment-15884210
]
Duo Zhang commented on HBASE-17584:
-----------------------------------
I hope this could be applied to branch-1 but there is a compatibility issue.
ResultScanner is marked as stable and it is an interface, and on branch-1 we
need to support JDK7 so we can not use default method. I think this means we
can not add new methods to the interface...
> Expose ScanMetrics with ResultScanner rather than Scan
> ------------------------------------------------------
>
> Key: HBASE-17584
> URL: https://issues.apache.org/jira/browse/HBASE-17584
> Project: HBase
> Issue Type: Sub-task
> Components: Client, mapreduce, scan
> Affects Versions: 2.0.0, 1.4.0
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Fix For: 2.0.0, 1.4.0
>
> Attachments: HBASE-17584.patch
>
>
> I think this have been discussed many times... It is a bad practice to
> directly modify the Scan object passed in when calling getScanner. The reason
> that we can not use a copy is we need to use the Scan object to expose scan
> metrics. So we need to find another way to expose the metrics.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
