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https://issues.apache.org/jira/browse/HBASE-11400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14065879#comment-14065879
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Hadoop QA commented on HBASE-11400:
-----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12656406/HBASE-11400-8.patch
against trunk revision .
ATTACHMENT ID: 12656406
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+0 tests included{color}. The patch appears to be a
documentation patch that doesn't require 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: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:
+ <para>Some codecs take advantage of cvapabilities built into Java,
such as GZip compression. Others rely on native libraries. Native libraries may
be available as part of Hadoop, such as LZ4. In this case, HBase only needs
access to the appropriate shared library. Other codecs, such as Google Snappy,
need to be installed first. Some codecs are licensed in ways that conflict with
HBase's license and cannot be shipped as part of HBase.</para>
+ <para>This section discusses common codecs that are used and tested with
HBase. No matter what codec you use, be sure to test that it is installed
correctly and is available on all nodes in your cluster. Extra operational
steps may be necessary to be sure that codecs are available on newly-deployed
nodes. You can use the <xref linkend="compression.test" /> utility to check
that a given codec is correctly installed.
+ <para>The following image shows a hypothetical ColumnFamily with no
data block encoding.</para>
+ <para>This image shows the same ColumnFamily from the previous images,
with Diff encoding.</para>
+ size and faster compression/decompression. Following are some general
guidelines, expanded from a discussion at <link
xlink:href="http://search-hadoop.com/m/lL12B1PFVhp1";>Documenting Guidance on
compression and codecs</link>. </para>
+ Compression</link> wiki page for information on configuring LZO
support for HBase. </para>
+ linkend="hbase.native.platform" />), you can make a symbolic
link from HBase to the native Hadoop
+ Use the compression tool to check that LZ4 is installed on all
nodes. Start up (or restart)
+ $ hbase org.apache.hadoop.hbase.util.CompressionTest
hdfs://<replaceable>host/path/to/hbase</replaceable> snappy
{color:red}-1 site{color}. The patch appears to cause mvn site goal to
fail.
{color:red}-1 core tests{color}. The patch failed these unit tests:
org.apache.hadoop.hbase.io.hfile.TestCacheConfig
Test results:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/10114//console
This message is automatically generated.
> Edit, consolidate, and update Compression and data encoding docs
> ----------------------------------------------------------------
>
> Key: HBASE-11400
> URL: https://issues.apache.org/jira/browse/HBASE-11400
> Project: HBase
> Issue Type: Improvement
> Components: documentation
> Reporter: Misty Stanley-Jones
> Assignee: Misty Stanley-Jones
> Priority: Minor
> Attachments: HBASE-11400-1.patch, HBASE-11400-2.patch,
> HBASE-11400-3.patch, HBASE-11400-4.patch, HBASE-11400-5.patch,
> HBASE-11400-6.patch, HBASE-11400-7.patch, HBASE-11400-8.patch,
> HBASE-11400.patch, data_block_diff_encoding.png, data_block_no_encoding.png,
> data_block_prefix_encoding.png
>
>
> Current docs are here: http://hbase.apache.org/book.html#compression.test
> It could use some editing and expansion.
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