[ https://issues.apache.org/jira/browse/HBASE-14355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14997262#comment-14997262 ]
Hadoop QA commented on HBASE-14355: ----------------------------------- {color:red}-1 overall{color}. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12771414/HBASE-14355-v9.patch against master branch at commit 7b80c803b70008a1e5cf593fc302535b451400fe. ATTACHMENT ID: 12771414 {color:green}+1 @author{color}. The patch does not contain any @author tags. {color:green}+1 tests included{color}. The patch appears to include 13 new or modified tests. {color:red}-1 patch{color}. The patch command could not apply the patch. Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/16463//console This message is automatically generated. > 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, 0.98.17 > > 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-v8.patch, > HBASE-14355-v9.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). -- This message was sent by Atlassian JIRA (v6.3.4#6332)