[
https://issues.apache.org/jira/browse/HADOOP-17125?focusedWorklogId=492687&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-492687
]
ASF GitHub Bot logged work on HADOOP-17125:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 29/Sep/20 21:33
Start Date: 29/Sep/20 21:33
Worklog Time Spent: 10m
Work Description: sunchao commented on a change in pull request #2297:
URL: https://github.com/apache/hadoop/pull/2297#discussion_r497073278
##########
File path: hadoop-common-project/hadoop-common/src/main/native/native.vcxproj
##########
@@ -68,30 +68,13 @@
<IntDir>..\..\..\target\native\$(Configuration)\</IntDir>
<TargetName>hadoop</TargetName>
</PropertyGroup>
- <PropertyGroup>
- <SnappyLib
Condition="Exists('$(CustomSnappyPrefix)\snappy.dll')">$(CustomSnappyPrefix)</SnappyLib>
- <SnappyLib Condition="Exists('$(CustomSnappyPrefix)\lib\snappy.dll') And
'$(SnappyLib)' == ''">$(CustomSnappyPrefix)\lib</SnappyLib>
- <SnappyLib Condition="Exists('$(CustomSnappyPrefix)\bin\snappy.dll') And
'$(SnappyLib)' == ''">$(CustomSnappyPrefix)\bin</SnappyLib>
- <SnappyLib Condition="Exists('$(CustomSnappyLib)') And '$(SnappyLib)' ==
''">$(CustomSnappyLib)</SnappyLib>
- <SnappyInclude
Condition="Exists('$(CustomSnappyPrefix)\snappy.h')">$(CustomSnappyPrefix)</SnappyInclude>
- <SnappyInclude Condition="Exists('$(CustomSnappyPrefix)\include\snappy.h')
And '$(SnappyInclude)' == ''">$(CustomSnappyPrefix)\include</SnappyInclude>
- <SnappyInclude Condition="Exists('$(CustomSnappyInclude)') And
'$(SnappyInclude)' == ''">$(CustomSnappyInclude)</SnappyInclude>
- <SnappyEnabled Condition="'$(SnappyLib)' != '' And '$(SnappyInclude)' !=
''">true</SnappyEnabled>
- <IncludePath Condition="'$(SnappyEnabled)' ==
'true'">$(SnappyInclude);$(IncludePath)</IncludePath>
- <IncludePath
Condition="Exists('$(ZLIB_HOME)')">$(ZLIB_HOME);$(IncludePath)</IncludePath>
Review comment:
I think this is for Zlib compressor (see
https://issues.apache.org/jira/browse/HADOOP-10450). Yeah it is a bit confusing
that it's defined in the same group.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
Issue Time Tracking
-------------------
Worklog Id: (was: 492687)
Time Spent: 21h 20m (was: 21h 10m)
> Using snappy-java in SnappyCodec
> --------------------------------
>
> Key: HADOOP-17125
> URL: https://issues.apache.org/jira/browse/HADOOP-17125
> Project: Hadoop Common
> Issue Type: New Feature
> Components: common
> Affects Versions: 3.3.0
> Reporter: DB Tsai
> Priority: Major
> Labels: pull-request-available
> Time Spent: 21h 20m
> Remaining Estimate: 0h
>
> In Hadoop, we use native libs for snappy codec which has several
> disadvantages:
> * It requires native *libhadoop* and *libsnappy* to be installed in system
> *LD_LIBRARY_PATH*, and they have to be installed separately on each node of
> the clusters, container images, or local test environments which adds huge
> complexities from deployment point of view. In some environments, it requires
> compiling the natives from sources which is non-trivial. Also, this approach
> is platform dependent; the binary may not work in different platform, so it
> requires recompilation.
> * It requires extra configuration of *java.library.path* to load the
> natives, and it results higher application deployment and maintenance cost
> for users.
> Projects such as *Spark* and *Parquet* use
> [snappy-java|[https://github.com/xerial/snappy-java]] which is JNI-based
> implementation. It contains native binaries for Linux, Mac, and IBM in jar
> file, and it can automatically load the native binaries into JVM from jar
> without any setup. If a native implementation can not be found for a
> platform, it can fallback to pure-java implementation of snappy based on
> [aircompressor|[https://github.com/airlift/aircompressor/tree/master/src/main/java/io/airlift/compress/snappy]].
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
