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override def publish(delta: MetadataDelta, newImage: MetadataImage): Unit = {
    val highestOffsetAndEpoch = newImage.highestOffsetAndEpoch()

    try {
      trace(s"Publishing delta $delta with highest offset $highestOffsetAndEpoch")

      // Publish the new metadata image to the metadata cache.
      metadataCache.setImage(newImage)
   	  ...
	  ...
      publishedOffsetAtomic.set(newImage.highestOffsetAndEpoch().offset)
    } catch {
	  //**** Increment publisher-error-count
      case t: Throwable => error(s"Error publishing broker metadata at $highestOffsetAndEpoch", t)	
        throw t
    } finally {
      _firstPublish = false
    }
  }