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https://issues.apache.org/jira/browse/YARN-5667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15563742#comment-15563742
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Haibo Chen commented on YARN-5667:
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Sorry for being late to update the patch, [~sjlee0]. I have cleaned up some
unused dependencies based on mvn's analysis. For some reason, mvn fails to
detect a lot of dependencies that are actually used. The version specification
of the dependency has been moved to hadoop-yarn as well. Uploading all 3 more
parts.
part 6: fixes the issue that for some classes, package names do not follow the
directory path of the source file
part 7: move version specification of timelineservice-hbase-test pom.xml to
hadoop-project pom.xml
part 8: clean up unused dependencies and declared dependencies that were not
declared in timelineservice modules.
One problem I still could solve though, is that the hbase dependencies are not
copied into the lib directory when hadoop is packaged. Any pointer as to where
I should be look at to fix this, [~sjlee0]
> Move HBase backend code in ATS v2 into its separate module
> -----------------------------------------------------------
>
> Key: YARN-5667
> URL: https://issues.apache.org/jira/browse/YARN-5667
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn
> Reporter: Haibo Chen
> Assignee: Haibo Chen
> Attachments: New module structure.png, part1.yarn5667.prelim.patch,
> part2.yarn5667.prelim.patch, part3.yarn5667.prelim.patch,
> part4.yarn5667.prelim.patch, part5.yarn5667.prelim.patch,
> pt1.yarn5667.001.patch, pt2.yarn5667.001.patch, pt3.yarn5667.001.patch,
> pt4.yarn5667.001.patch, pt5.yarn5667.001.patch, pt6.yarn5667.001.patch,
> yarn5667-001.tar.gz
>
>
> The HBase backend code currently lives along with the core ATS v2 code in
> hadoop-yarn-server-timelineservice module. Because Resource Manager depends
> on hadoop-yarn-server-timelineservice, an unnecessary dependency of the RM
> module on HBase modules is introduced (HBase backend is pluggable, so we do
> not need to directly pull in HBase jars).
> In our internal effort to try ATS v2 with HBase 2.0 which depends on Hadoop
> 3, we encountered a circular dependency during our builds between HBase2.0
> and Hadoop3 artifacts.
> {code}
> hadoop-mapreduce-client-common, hadoop-yarn-client,
> hadoop-yarn-server-resourcemanager, hadoop-yarn-server-timelineservice,
> hbase-server, hbase-prefix-tree, hbase-hadoop2-compat,
> hadoop-mapreduce-client-jobclient, hadoop-mapreduce-client-common]
> {code}
> This jira proposes we move all HBase-backend-related code from
> hadoop-yarn-server-timelineservice into its own module (possible name is
> yarn-server-timelineservice-storage) so that core RM modules do not depend on
> HBase modules any more.
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