[ 
https://issues.apache.org/jira/browse/HADOOP-17125?focusedWorklogId=485313&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-485313
 ]

ASF GitHub Bot logged work on HADOOP-17125:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 16/Sep/20 18:50
            Start Date: 16/Sep/20 18:50
    Worklog Time Spent: 10m 
      Work Description: dbtsai commented on a change in pull request #2297:
URL: https://github.com/apache/hadoop/pull/2297#discussion_r489663248



##########
File path: hadoop-common-project/hadoop-common/pom.xml
##########
@@ -363,6 +363,10 @@
       <artifactId>wildfly-openssl-java</artifactId>
       <scope>provided</scope>
     </dependency>
+    <dependency>
+      <groupId>org.xerial.snappy</groupId>

Review comment:
       We can make it provided, and once we create a `hadoop-compression` 
module, we can add back the jar. @viirya since the jar will be provided, we 
need to check if the class exists so we can log it with right message.




----------------------------------------------------------------
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:
us...@infra.apache.org


Issue Time Tracking
-------------------

    Worklog Id:     (was: 485313)
    Time Spent: 10.5h  (was: 10h 20m)

> 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: 10.5h
>  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: common-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: common-issues-h...@hadoop.apache.org

Reply via email to