default int compactPartition(String partitionPath, CloudStorageCompactor compactor) throws CloudStorageException {
    // For backward compatibility with tests
    return compactPartition(partitionPath);
  }
Compact the specified partition, removing blobs that have been deleted or expired for at least the configured
retention period.

@param partitionPath the path of the partitions to compact.
@throws CloudStorageException
ambry-cloud/src/main/java/com/github/ambry/cloud/CloudDestination.java