[
https://issues.apache.org/jira/browse/HBASE-12031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14145302#comment-14145302
]
Hadoop QA commented on HBASE-12031:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12670749/HBASE-12031.3.patch
against trunk revision .
ATTACHMENT ID: 12670749
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 33 new
or modified tests.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
warning messages.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 2.0.3) warnings.
{color:red}-1 release audit{color}. The applied patch generated 2 release
audit warnings (more than the trunk's current 0 warnings).
{color:red}-1 lineLengths{color}. The patch introduces the following lines
longer than 100:
+ * TODO: If scanner makes many skips - decrease prefetch size ( down to
the size of a single HFile block)
+ public final static String HFILE_READAHEAD_BUFFER_EXPIRE_TIMEOUT =
"hfile.readahead.buffer.expire.timeout";
+ maxActiveBuffers = config.getInt(HFILE_READAHEAD_ACTIVE_BUFFERS,
DEFAULT_HFILE_PSCAN_ACTIVE_BUFFERS);
+ bufferExpirationTimeout =
config.getLong(HFILE_READAHEAD_BUFFER_EXPIRE_TIMEOUT,
DEFAULT_HFILE_PSCAN_BUFFER_EXPIRE_TIMEOUT);
+ System.out.println("Size="+predictor.getPredictorSize()+"
outliers="+predictor.getOutliersNumber()+ " avg ="+predictor.getMovingAverage()+
{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.security.token.TestZKSecretWatcher
org.apache.hadoop.hbase.master.TestMasterFailover
org.apache.hadoop.hbase.regionserver.TestEndToEndSplitTransaction
{color:red}-1 core zombie tests{color}. There are 2 zombie test(s):
at
org.apache.blur.lucene.search.FacetQueryTest.testFacetQueryPerformance2(FacetQueryTest.java:141)
at
org.apache.hadoop.hbase.client.TestReplicasClient.testSmallScanWithReplicas(TestReplicasClient.java:544)
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//testReport/
Release audit warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/11036//console
This message is automatically generated.
> Parallel Scanners inside Region
> -------------------------------
>
> Key: HBASE-12031
> URL: https://issues.apache.org/jira/browse/HBASE-12031
> Project: HBase
> Issue Type: New Feature
> Components: Performance, Scanners
> Affects Versions: 0.98.6
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Fix For: 1.0.0, 2.0.0, 0.98.7, 0.99.1
>
> Attachments: HBASE-12031.2.patch, HBASE-12031.3.patch,
> HBASE-12031.patch, ParallelScannerDesign.pdf, hbase-12031-tests.tar.gz
>
>
> This JIRA to improve performance of multiple scanners running on a same
> region in parallel. The scenarios where we will get the performance benefits:
> * New TableInputFormat with input splits smaller than HBase Region.
> * Scanning during compaction (Compaction scanner and application scanner over
> the same Region).
> Some JIRAs related to this one:
> https://issues.apache.org/jira/browse/HBASE-7336
> https://issues.apache.org/jira/browse/HBASE-5979
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