@Override
  public boolean scheduleNextForCompaction(PartitionId id) {
    if (exceptionToThrowOnSchedulingCompaction != null) {
      throw exceptionToThrowOnSchedulingCompaction;
    }
    compactionScheduledPartitionId = id;
    return returnValueOfSchedulingCompaction;
  }
The {@link PartitionId} that was provided in the call to {@link #startBlobStore(PartitionId)}
ambry-server/src/test/java/com/github/ambry/server/MockStorageManager.java