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https://issues.apache.org/jira/browse/HBASE-13926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14590524#comment-14590524
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Hadoop QA commented on HBASE-13926:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12740150/HBASE-13926.patch
against master branch at commit 623fd63827b2953c150597f24c7205737119bebe.
ATTACHMENT ID: 12740150
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 3 new
or modified tests.
{color:green}+1 hadoop versions{color}. The patch compiles with all
supported hadoop versions (2.4.1 2.5.2 2.6.0)
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 protoc{color}. The applied patch does not increase the
total number of protoc compiler warnings.
{color:red}-1 javadoc{color}. The javadoc tool appears to have generated 1
warning messages.
{color:green}+1 checkstyle{color}. The applied patch does not increase the
total number of checkstyle errors
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 2.0.3) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit 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.regionserver.TestEndToEndSplitTransaction
{color:red}-1 core zombie tests{color}. There are 1 zombie test(s):
at
org.apache.camel.component.jetty.jettyproducer.HttpJettyProducerRecipientListCustomThreadPoolTest.testRecipientList(HttpJettyProducerRecipientListCustomThreadPoolTest.java:40)
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/14446//testReport/
Release Findbugs (version 2.0.3) warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/14446//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors:
https://builds.apache.org/job/PreCommit-HBASE-Build/14446//artifact/patchprocess/checkstyle-aggregate.html
Javadoc warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/14446//artifact/patchprocess/patchJavadocWarnings.txt
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/14446//console
This message is automatically generated.
> Close the scanner only after Call#setResponse
> ---------------------------------------------
>
> Key: HBASE-13926
> URL: https://issues.apache.org/jira/browse/HBASE-13926
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver, Scanners
> Reporter: Anoop Sam John
> Assignee: Anoop Sam John
> Fix For: 2.0.0
>
> Attachments: HBASE-13926.patch
>
>
> This is for HBASE-12295. We will be delivering cells directly from shared
> cache memory. HBASE-12295 adds a ref count based prevention mechanism to
> avoid block eviction, when that memory area in use by scanners. We will
> decrement ref count at scanner close. The memory area will be in use till a
> cellblock is created or PB scan reply message is built. So we can delay the
> close of the scanner until the response is set for the scanner Call. This is
> done via a RpcCallback way. The callback is set on Call at scan time. Once
> the setResponse is done, the Call will execute the RpcCallback.
> This jira also adds a facility to do some cleanup/close during the course of
> scan. Scan from client makes many RPCs fetching N rows each time. Only at the
> end the scanner close will happen. We will add a new batchClose() facility
> with which we can do any cleanup after every rpc call is executed and rows
> fetched for return.
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