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https://issues.apache.org/jira/browse/HBASE-14355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14981871#comment-14981871
 ] 

stack commented on HBASE-14355:
-------------------------------

[~churromorales] You are changing a public API here:

 -  public Get setTimeStamp(long timestamp)
 -  throws IOException {
 -    try {
 -      tr = new TimeRange(timestamp, timestamp+1);
 -    } catch(IOException e) {
 -      // This should never happen, unless integer overflow or something 
extremely wrong...
 -      LOG.error("TimeRange failed, likely caused by integer overflow. ", e);
 -      throw e;
 -    }
 +  public Get setTimeStamp(long timestamp) {
 +    tr = new TimeRange(timestamp, timestamp+1);

Not allowed, not w/o deprecation step first. I can fix on commit if you'd like.

Otherwise, [~anoop.hbase], you good w/ the patch?

> Scan different TimeRange for each column family
> -----------------------------------------------
>
>                 Key: HBASE-14355
>                 URL: https://issues.apache.org/jira/browse/HBASE-14355
>             Project: HBase
>          Issue Type: New Feature
>          Components: Client, regionserver, Scanners
>            Reporter: Dave Latham
>            Assignee: churro morales
>             Fix For: 2.0.0, 1.3.0, 0.98.16
>
>         Attachments: HBASE-14355-v1.patch, HBASE-14355-v2.patch, 
> HBASE-14355-v3.patch, HBASE-14355-v4.patch, HBASE-14355-v5.patch, 
> HBASE-14355-v6.patch, HBASE-14355-v7.patch, HBASE-14355.patch
>
>
> At present the Scan API supports only table level time range. We have 
> specific use cases that will benefit from per column family time range. (See 
> background discussion at 
> https://mail-archives.apache.org/mod_mbox/hbase-user/201508.mbox/%3ccaa4mzom00ef5eoxstk0hetxeby8mqss61gbvgttgpaspmhq...@mail.gmail.com%3E)
> There are a couple of choices that would be good to validate.  First - how to 
> update the Scan API to support family and table level updates.  One proposal 
> would be to add Scan.setTimeRange(byte family, long minTime, long maxTime), 
> then store it in a Map<byte[], TimeRange>.  When executing the scan, if a 
> family has a specified TimeRange, then use it, otherwise fall back to using 
> the table level TimeRange.  Clients using the new API against old region 
> servers would not get the families correctly filterd.  Old clients sending 
> scans to new region servers would work correctly.
> The other question is how to get StoreFileScanner.shouldUseScanner to match 
> up the proper family and time range.  It has the Scan available but doesn't 
> currently have available which family it is a part of.  One option would be 
> to try to pass down the column family in each constructor path.  Another 
> would be to instead alter shouldUseScanner to pass down the specific 
> TimeRange to use (similar to how it currently passes down the columns to use 
> which also appears to be a workaround for not having the family available). 



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