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https://issues.apache.org/jira/browse/YARN-11664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17831901#comment-17831901
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ASF GitHub Bot commented on YARN-11664:
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steveloughran commented on PR #6631:
URL: https://github.com/apache/hadoop/pull/6631#issuecomment-2025705847
waiting to see what hdfs people say; mentioned internally.
now, there is a way to do this with a smaller diff, specifically, move the
IOPair class into hadoop common *but keep with the same package name*.
something to seriously consider. would reduce the risk of any code elsewhere
making explicit use of the class then breaking.
> Remove HDFS Binaries/Jars Dependency From YARN
> ----------------------------------------------
>
> Key: YARN-11664
> URL: https://issues.apache.org/jira/browse/YARN-11664
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Reporter: Syed Shameerur Rahman
> Assignee: Syed Shameerur Rahman
> Priority: Major
> Labels: pull-request-available
>
> In principle Hadoop Yarn is independent of HDFS. It can work with any
> filesystem. Currently there exists some code dependency for Yarn with HDFS.
> This dependency requires Yarn to bring in some of the HDFS binaries/jars to
> its class path. The idea behind this jira is to remove this dependency so
> that Yarn can run without HDFS binaries/jars
> *Scope*
> 1. Non test classes are considered
> 2. Some test classes which comes as transitive dependency are considered
> *Out of scope*
> 1. All test classes in Yarn module is not considered
>
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------
> A quick search in Yarn module revealed following HDFS dependencies
> 1. Constants
> {code:java}
> import
> org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
> import org.apache.hadoop.hdfs.DFSConfigKeys;{code}
>
>
> 2. Exception
> {code:java}
> import org.apache.hadoop.hdfs.protocol.DSQuotaExceededException;{code}
>
> 3. Utility
> {code:java}
> import org.apache.hadoop.hdfs.protocol.datatransfer.IOStreamPair;{code}
>
> Both Yarn and HDFS depends on *hadoop-common* module,
> * Constants variables and Utility classes can be moved to *hadoop-common*
> * Instead of DSQuotaExceededException, Use the parent exception
> ClusterStoragrCapacityExceeded
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