public void setArtifactData(Map<String, Object> artifactData) {
    this.artifactData = jsonSerializer.toJson(artifactData);
  }
Set the artifact data by specifying a map that is then
converted to a json string.

@param artifactData  artifact data map
ambari-server/src/main/java/org/apache/ambari/server/orm/entities/ArtifactEntity.java