[
https://issues.apache.org/jira/browse/HBASE-11144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14003150#comment-14003150
]
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/12644549/MultiRowRangeFilter2.patch
against trunk revision .
ATTACHMENT ID: 12644549
{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 1
warning messages.
{color:red}-1 findbugs{color}. The patch appears to introduce 2 new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:red}-1 lineLengths{color}. The patch introduces the following lines
longer than 100:
+ FilterProtos.MultiRowRangeFilter.Builder builder =
FilterProtos.MultiRowRangeFilter.newBuilder();
+ if (range.startRow != null)
rangebuilder.setStartRow(HBaseZeroCopyByteString.wrap(range.startRow));
+ if (range.stopRow != null)
rangebuilder.setStopRow(HBaseZeroCopyByteString.wrap(range.stopRow));
+ * @param pbBytes A pb serialized {@link
org.apache.hadoop.hbase.filter.ColumnRangeFilter} instance
+ * @return An instance of {@link
org.apache.hadoop.hbase.filter.ColumnRangeFilter} made from <code>bytes</code>
+ RowKeyRange range = new
RowKeyRange(rangeProto.hasStartRow()?rangeProto.getStartRow().toByteArray():null,
+ sb.append("There might be overlaps between rowkey ranges or the rowkey
ranges are not arranged in ascending order.\n");
+ private void generateRows(int numberOfRows, HTable ht, byte[] family, byte[]
qf, byte[] value) throws IOException {
{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:
{color:red}-1 core zombie tests{color}. There are 1 zombie test(s):
at
org.apache.hadoop.hbase.mapreduce.TestTableMapReduceBase.testMultiRegionTable(TestTableMapReduceBase.java:96)
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/9543//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
>
>
> 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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