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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12213) HFileBlock backed by Array of ByteBuffers
Date Mon, 13 Jul 2015 16:32:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14624896#comment-14624896
] 

ramkrishna.s.vasudevan commented on HBASE-12213:
------------------------------------------------

The test cases passes.  Not sure the reason for the failure here.
{code}
org.dom4j.DocumentException: Error on line 85 of document file:///home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/hbase-server/target/surefire-reports/TEST-org.apache.hadoop.hbase.master.TestDistributedLogSplitting.xml
: XML document structures must start and end within the same entity. Nested exception: XML
document structures must start and end within the same entity.
	at org.dom4j.io.SAXReader.read(SAXReader.java:482)
	at org.dom4j.io.SAXReader.read(SAXReader.java:264)
	at hudson.tasks.junit.SuiteResult.parse(SuiteResult.java:123)
	at hudson.tasks.junit.TestResult.parse(TestResult.java:273)
	at hudson.tasks.junit.TestResult.parsePossiblyEmpty(TestResult.java:229)
	at hudson.tasks.junit.TestResult.parse(TestResult.java:164)
	at hudson.tasks.junit.TestResult.parse(TestResult.java:147)
	at hudson.tasks.junit.TestResult.<init>(TestResult.java:123)
	at hudson.tasks.junit.JUnitParser$ParseResultCallable.invoke(JUnitParser.java:117)
	at hudson.tasks.junit.JUnitParser$ParseResultCallable.invoke(JUnitParser.java:90)
	at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2474)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:328)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
{code}

> HFileBlock backed by Array of ByteBuffers
> -----------------------------------------
>
>                 Key: HBASE-12213
>                 URL: https://issues.apache.org/jira/browse/HBASE-12213
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: Anoop Sam John
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: HBASE-12213_1.patch, HBASE-12213_10_withBBI.patch, HBASE-12213_11_withBBI.patch,
HBASE-12213_12_withBBI.patch, HBASE-12213_12_withBBI.patch, HBASE-12213_2.patch, HBASE-12213_4.patch,
HBASE-12213_8_withBBI.patch, HBASE-12213_9_withBBI.patch, HBASE-12213_jmh.zip
>
>
> In L2 cache (offheap) an HFile block might have been cached into multiple chunks of buffers.
If HFileBlock need single BB, we will end up in recreation of bigger BB and copying. Instead
we can make HFileBlock to serve data from an array of BBs.



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