@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    RepairRequestRecord record = (RepairRequestRecord) o;
    return Objects.equals(blobId, record.blobId) && partitionId == record.partitionId && Objects.equals(sourceHostName,
        record.sourceHostName) && sourceHostPort == record.sourceHostPort && operationType == record.operationType
        && operationTimeMs == record.operationTimeMs && lifeVersion == record.lifeVersion
        && expirationTimeMs == record.expirationTimeMs;
  }
@return the expiration time in milliseconds of the ttl expiration time.
ambry-api/src/main/java/com/github/ambry/repair/RepairRequestRecord.java