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https://issues.apache.org/jira/browse/HADOOP-20016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jose Luis López reassigned HADOOP-20016:
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Assignee: Jose Luis López
> HADOOP - Declare jetty-http in the modules that import it: hadoop-common,
> HttpFS, the shuffle handler and SLS
> -------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-20016
> URL: https://issues.apache.org/jira/browse/HADOOP-20016
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: mapreduce
> Reporter: Jose Luis López
> Assignee: Jose Luis López
> Priority: Minor
> Labels: pull-request-available
>
> *Scope*:
> * hadoop-project/pom.xml: manage jetty-http at ${jetty.version}. It is not
> managed today.
> * hadoop-mapreduce-client-shuffle/pom.xml: ShuffleChannelHandler imports
> org.eclipse.jetty.http.HttpHeader. Declare org.eclipse.jetty:jetty-http,
> optional.
> * hadoop-common/pom.xml: HttpServer2 and McpHttpServer import
> org.eclipse.jetty.http.*. Declare jetty-http at compile scope, optional.
> * hadoop-hdfs-httpfs/pom.xml: TestJettyHelper imports
> org.eclipse.jetty.http.*. Declare jetty-http, optional.
> * hadoop-sls/pom.xml: SLSWebApp imports org.eclipse.jetty.http.*. Declare
> jetty-http with scope provided, like the module's jetty-server.
> *Why*: these modules compile against jetty-http that they get only
> transitively, through jetty-server.
> *Why optional*: it keeps the declaration for compiling each module without
> passing it on, so what downstream projects resolve does not change. At plain
> compile scope it did: Maven's nearest-wins mediation picked Hadoop's
> jetty-http over another one at the same depth, and a project with
> jetty-client 9.4.40 next to hadoop-common resolved jetty-http 9.4.58 instead
> of 9.4.40. In the shuffle handler, trunk already resolves jetty-http at
> compile scope (through the NodeManager and mapreduce-client-common); optional
> keeps that, whereas provided would change it (review on PR #8699). It is not
> copied into the mapreduce lib directory.
> *Impact on Jetty 9*: none. jetty-http already resolves at 9.4.58 in each
> module.
> *Downstream*: none. Projects that depend on these modules keep getting
> jetty-http through jetty-server, as today.
> *CI*: touches hadoop-project, so a full build.
> *PR*: https://github.com/apache/hadoop/pull/8894
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