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https://issues.apache.org/jira/browse/HBASE-13939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14593992#comment-14593992
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Hadoop QA commented on HBASE-13939:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12740628/HBASE-13939_1.patch
against master branch at commit 8ae4b374e3fa4cd54b8b83bc857d41f0678ad9b6.
ATTACHMENT ID: 12740628
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 4 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:green}+1 javadoc{color}. The javadoc tool did not generate any
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 post-site goal succeeds with this patch.
{color:red}-1 core tests{color}. The patch failed these unit tests:
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/14467//testReport/
Release Findbugs (version 2.0.3) warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/14467//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors:
https://builds.apache.org/job/PreCommit-HBASE-Build/14467//artifact/patchprocess/checkstyle-aggregate.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/14467//console
This message is automatically generated.
> Make HFileReaderImpl.getFirstKeyInBlock() to return a Cell
> ----------------------------------------------------------
>
> Key: HBASE-13939
> URL: https://issues.apache.org/jira/browse/HBASE-13939
> Project: HBase
> Issue Type: Sub-task
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: HBASE-13939.patch, HBASE-13939_1.patch
>
>
> The getFirstKeyInBlock() in HFileReaderImpl is returning a BB. It is getting
> used in seekBefore cases. Because we return a BB we create a KeyOnlyKV once
> for comparison
> {code}
> if (reader.getComparator()
> .compareKeyIgnoresMvcc(
> new KeyValue.KeyOnlyKeyValue(firstKey.array(),
> firstKey.arrayOffset(),
> firstKey.limit()), key) >= 0) {
> long previousBlockOffset = seekToBlock.getPrevBlockOffset();
> // The key we are interested in
> if (previousBlockOffset == -1) {
> // we have a 'problem', the key we want is the first of the file.
> return false;
> }
> ........
> {code}
> And if the compare fails we again create another KeyOnlyKv
> {code}
> Cell firstKeyInCurrentBlock = new
> KeyValue.KeyOnlyKeyValue(Bytes.getBytes(firstKey));
> loadBlockAndSeekToKey(seekToBlock, firstKeyInCurrentBlock, true, key,
> true);
> {code}
> So one object will be enough and that can be returned by getFirstKeyInBlock.
> Also will be useful when we go with Buffered backed server cell to change in
> one place.
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