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https://issues.apache.org/jira/browse/HBASE-11144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14008841#comment-14008841
]
Hadoop QA commented on HBASE-11144:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12645925/MultiRowRangeFilter3.patch
against trunk revision .
ATTACHMENT ID: 12645925
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 2 new
or modified tests.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:red}-1 javadoc{color}. The javadoc tool appears to have generated 3
warning messages.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) warnings.
{color:red}-1 release audit{color}. The applied patch generated 31 release
audit warnings (more than the trunk's current 0 warnings).
{color:green}+1 lineLengths{color}. The patch does not introduce lines
longer than 100
{color:green}+1 site{color}. The mvn site goal succeeds with this patch.
{color:red}-1 core tests{color}. The patch failed these unit tests:
org.apache.hadoop.hbase.master.TestTableLockManager
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//testReport/
Release audit warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/9587//console
This message is automatically generated.
> Filter to support scan multiple row key ranges
> ----------------------------------------------
>
> Key: HBASE-11144
> URL: https://issues.apache.org/jira/browse/HBASE-11144
> Project: HBase
> Issue Type: Improvement
> Components: Filters
> Reporter: Li Jiajia
> Attachments: MultiRowRangeFilter.patch, MultiRowRangeFilter2.patch,
> MultiRowRangeFilter3.patch
>
>
> HBase is quite efficient when scanning only one small row key range. If user
> needs to specify multiple row key ranges in one scan, the typical solutions
> are: 1. through FilterList which is a list of row key Filters, 2. using the
> SQL layer over HBase to join with two table, such as hive, phoenix etc.
> However, both solutions are inefficient. Both of them can’t utilize the range
> info to perform fast forwarding during scan which is quite time consuming. If
> the number of ranges are quite big (e.g. millions), join is a proper solution
> though it is slow. However, there are cases that user wants to specify a
> small number of ranges to scan (e.g. <1000 ranges). Both solutions can’t
> provide satisfactory performance in such case.
> We provide this filter (MultiRowRangeFilter) to support such use case (scan
> multiple row key ranges), which can construct the row key ranges from user
> specified sorted list and perform fast-forwarding during scan. Thus, the scan
> will be quite efficient.
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