Attila Doroszlai created HDDS-11588:
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             Summary: Add main artifact jar to classpath file
                 Key: HDDS-11588
                 URL: https://issues.apache.org/jira/browse/HDDS-11588
             Project: Apache Ozone
          Issue Type: Improvement
          Components: build
            Reporter: Attila Doroszlai
            Assignee: Attila Doroszlai


Classpath file for Ozone components only include dependencies, but not the 
component's own jar file.  Thus, Ozone needs to find it at runtime:

{code:title=https://github.com/apache/ozone/blob/2139367b52d68773f25d79abce0439323dde9671/hadoop-ozone/dist/src/shell/ozone/ozone-functions.sh#L2820-L2826}
  #We need to add the artifact manually as it's not part the generated 
classpath desciptor
  local MAIN_ARTIFACT
  MAIN_ARTIFACT=$(find "$HDDS_LIB_JARS_DIR" -name 
"${OZONE_RUN_ARTIFACT_NAME}-*.jar")
  if [[ -z "$MAIN_ARTIFACT" ]] || [[ ! -e "$MAIN_ARTIFACT" ]]; then
    echo "ERROR: Component jar file $MAIN_ARTIFACT is missing from 
${HDDS_LIB_JARS_DIR}"
  fi
  ozone_add_classpath "${MAIN_ARTIFACT}"
{code}

This causes startup error if multiple versions of the same component happen to 
be present in the {{$HDDS_LIB_JARS_DIR}} directory.

It would be nice to add main artifacts to the classpath files at build time.



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