[jira] [Commented] (YARN-6628) Unexpected jackson-core-2.2.3 dependency introduced

["Haibo Chen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/YARN-6628?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16018113#comment-16018113 ] 

Haibo Chen commented on YARN-6628:
----------------------------------

Based on its pom file, fst depends on jackson-core:2.8.8
{code:xml}
        <!-- required for createJSONConfiguration -->
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>2.8.8</version>
        </dependency>
{code}
It is overridden by the version specified in hadoop-2.8, which is 2.2.3. That's why jackson-core-2.2.3.jar is in share/hadoop/yarn/lib
{code:xml}
\- de.ruedigermoeller:fst:jar:2.50:compile
   +- com.fasterxml.jackson.core:jackson-core:jar:2.2.3:compile (version managed from 2.8.8)
   \- com.cedarsoftware:java-util:jar:1.9.0:compile
      \- com.cedarsoftware:json-io:jar:2.5.1:compile
{code}

Strangely enough, according to mvn dependency:tree, jackson-core is not dependent on by fst in trunk
{code}
\- de.ruedigermoeller:fst:jar:2.50:compile
   \- com.cedarsoftware:java-util:jar:1.9.0:compile
       \- com.cedarsoftware:json-io:jar:2.5.1:compile
{code}
and jackson-core.jar is NOT in share/hadoop/yarn/lib/ even though hadoop-yarn-common and other modules depend on it.
{code}
+- org.apache.hadoop:hadoop-yarn-common:jar:3.0.0-alpha3-SNAPSHOT:compile
  +- com.fasterxml.jackson.core:jackson-core:jar:2.7.8:compile
  +- com.fasterxml.jackson.module:jackson-module-jaxb-annotations:jar:2.7.8:compile
  \- com.fasterxml.jackson.jaxrs:jackson-jaxrs-json-provider:jar:2.7.8:compile
     \- com.fasterxml.jackson.jaxrs:jackson-jaxrs-base:jar:2.7.8:compile
{code}

Any idea how this could have happened?

> Unexpected jackson-core-2.2.3 dependency introduced
> ---------------------------------------------------
>
>                 Key: YARN-6628
>                 URL: https://issues.apache.org/jira/browse/YARN-6628
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: timelineserver
>    Affects Versions: 2.8.1
>            Reporter: Jason Lowe
>            Priority: Blocker
>
> The change in YARN-5894 caused jackson-core-2.2.3.jar to be added in share/hadoop/yarn/lib/. This added dependency seems to be incompatible with jackson-core-asl-1.9.13.jar which is also shipped as a dependency.  This new jackson-core jar ends up breaking jobs that ran fine on 2.8.0.



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