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https://issues.apache.org/jira/browse/HADOOP-19084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17820159#comment-17820159
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ASF GitHub Bot commented on HADOOP-19084:
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steveloughran opened a new pull request, #6582:
URL: https://github.com/apache/hadoop/pull/6582
#6574 for trunk
Exclude more artifacts which are dependencies of hadoop-* modules, with the
goal of keeping conflict out of downstream applications.
In particular we have pruned the dependencies of of: -zookeeper
-other libraries referencing logging
This keeps slf4j-log4j12 and log4j12 off the classpath of applications
importing hadoop-common.
Somehow logback references do still surface; applications pulling in
hadoop-common directly or indirectly should review their imports carefully.
### Description of PR
### How was this patch tested?
### For code changes:
- [ ] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
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- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
> prune dependency exports of hadoop-* modules
> --------------------------------------------
>
> Key: HADOOP-19084
> URL: https://issues.apache.org/jira/browse/HADOOP-19084
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: build
> Affects Versions: 3.4.0, 3.5.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
> Labels: pull-request-available
>
> this is probably caused by HADOOP-18613:
> ZK is pulling in some extra transitive stuff which surfaces in applications
> which import hadoop-common into their poms. It doesn't seem to show up in our
> distro, but downstream you get warnings about duplicate logging stuff
> {code}
> | +- org.apache.zookeeper:zookeeper:jar:3.8.3:compile
> | | +- org.apache.zookeeper:zookeeper-jute:jar:3.8.3:compile
> | | | \- (org.apache.yetus:audience-annotations:jar:0.12.0:compile -
> omitted for duplicate)
> | | +- org.apache.yetus:audience-annotations:jar:0.12.0:compile
> | | +- (io.netty:netty-handler:jar:4.1.94.Final:compile - omitted for
> conflict with 4.1.100.Final)
> | | +- (io.netty:netty-transport-native-epoll:jar:4.1.94.Final:compile -
> omitted for conflict with 4.1.100.Final)
> | | +- (org.slf4j:slf4j-api:jar:1.7.30:compile - omitted for duplicate)
> | | +- ch.qos.logback:logback-core:jar:1.2.10:compile
> | | +- ch.qos.logback:logback-classic:jar:1.2.10:compile
> | | | +- (ch.qos.logback:logback-core:jar:1.2.10:compile - omitted for
> duplicate)
> | | | \- (org.slf4j:slf4j-api:jar:1.7.32:compile - omitted for conflict
> with 1.7.30)
> | | \- (commons-io:commons-io:jar:2.11.0:compile - omitted for conflict
> with 2.14.0)
> {code}
> proposed: exclude the zk dependencies we either override outselves or don't
> need.
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