private void maybeUpdateSlippedPutSuccessMetrics(PutChunk chunk) {
    if (chunk.failedAttempts > 0) {
      logger.trace("{}: Slipped put succeeded for chunk: {}", loggingContext, chunk.getChunkBlobId());
      routerMetrics.slippedPutSuccessCount.inc();
      if (chunk instanceof MetadataPutChunk) {
        routerMetrics.metadataSlippedPutSuccessCount.inc();
      }
    } else {
      logger.trace("{}: Successfully put chunk: {} ", loggingContext, chunk.getChunkBlobId());
    }
  }
Update the metrics for slipped puts if slipped puts were attempted.
ambry-router/src/main/java/com/github/ambry/router/PutOperation.java