Loads of DEBUG messages with new s3transfer package

I just updated my boto3 and it installed a new s3transfer package (0.1.1). Problem is that now I get a load of DEBUG messages for every S3 download my app performs.

DEBUG:s3transfer.utils: Acquiring 0
DEBUG:s3transfer.tasks: DownloadSubmissionTask({'transfer_future': <s3transfer.futures.TransferFuture object at 0x10ae6a350>}) about to wait for the following futures []
DEBUG:s3transfer.tasks: DownloadSubmissionTask({'transfer_future': <s3transfer.futures.TransferFuture object at 0x10ae6a350>}) done waiting for dependent futures
DEBUG:s3transfer.tasks: Executing task DownloadSubmissionTask({'transfer_future': <s3transfer.futures.TransferFuture object at 0x10ae6a350>}) with kwargs {'io_executor': <s3transfer.futures.BoundedExecutor object at 0x10ae34f90>, 'request_executor': <s3transfer.futures.BoundedExecutor object at 0x10ae34b90>, 'osutil': <s3transfer.utils.OSUtils object at 0x10ae34950>, 'client': <botocore.client.S3 object at 0x10ae343d0>, 'transfer_future': <s3transfer.futures.TransferFuture object at 0x10ae6a350>, 'config': <boto3.s3.transfer.TransferConfig object at 0x10ae34910>}
DEBUG:s3transfer.futures: Submitting task GetObjectTask({'extra_args': {}, 'bucket': 'BUCKET', 'key': 'FILE'}) to executor <s3transfer.futures.BoundedExecutor object at 0x10ae34b90> for transfer request: 0.
DEBUG:s3transfer.utils: Acquiring 0
DEBUG:s3transfer.tasks: GetObjectTask({'extra_args': {}, 'bucket': 'BUCKET', 'key': 'FILE'}) about to wait for the following futures []
DEBUG:s3transfer.tasks: GetObjectTask({'extra_args': {}, 'bucket': 'BUCKET', 'key': 'FILE'}) done waiting for dependent futures
DEBUG:s3transfer.tasks: Executing task GetObjectTask({'extra_args': {}, 'bucket': 'BUCKET', 'key': 'FILE'}) with kwargs {'fileobj': <open file '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f.6A5DbD3C', mode 'wb' at 0x109865a50>, 'bucket': 'BUCKET', 'download_output_manager': <s3transfer.download.DownloadFilenameOutputManager object at 0x10ae90890>, 'extra_args': {}, 'callbacks': [], 'client': <botocore.client.S3 object at 0x10ae343d0>, 'key': 'FILE', 'io_chunksize': 262144, 'max_attempts': 5}
DEBUG:s3transfer.futures: Submitting task JoinFuturesTask({}) to executor <s3transfer.futures.BoundedExecutor object at 0x10ae34b90> for transfer request: 0.
DEBUG:s3transfer.utils: Acquiring 0
DEBUG:s3transfer.tasks: JoinFuturesTask({}) about to wait for the following futures [<Future at 0x10aeb9390 state=running>]
DEBUG:s3transfer.utils: Releasing acquire 0/None
DEBUG:s3transfer.tasks: JoinFuturesTask({}) about to wait for <Future at 0x10aeb9390 state=running>
DEBUG:s3transfer.futures: Submitting task IOWriteTask({'offset': 0}) to executor <s3transfer.futures.BoundedExecutor object at 0x10ae34f90> for transfer request: 0.
DEBUG:s3transfer.utils: Acquiring 0
DEBUG:s3transfer.tasks: IOWriteTask({'offset': 0}) about to wait for the following futures []
DEBUG:s3transfer.tasks: IOWriteTask({'offset': 0}) done waiting for dependent futures
DEBUG:s3transfer.tasks: Executing task IOWriteTask({'offset': 0}) with kwargs {'fileobj': <open file '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f.6A5DbD3C', mode 'wb' at 0x109865a50>, 'offset': 0}
DEBUG:s3transfer.utils: Releasing acquire 0/None
DEBUG:s3transfer.tasks: JoinFuturesTask({}) done waiting for dependent futures
DEBUG:s3transfer.utils: Releasing acquire 0/None
DEBUG:s3transfer.tasks: Executing task JoinFuturesTask({}) with kwargs {'futures_to_wait_on': [None]}
DEBUG:s3transfer.futures: Submitting task IORenameFileTask({'final_filename': '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f'}) to executor <s3transfer.futures.BoundedExecutor object at 0x10ae34f90> for transfer request: 0.
DEBUG:s3transfer.utils: Acquiring 0
DEBUG:s3transfer.utils: Releasing acquire 0/None
DEBUG:s3transfer.tasks: IORenameFileTask({'final_filename': '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f'}) about to wait for the following futures []
DEBUG:s3transfer.tasks: IORenameFileTask({'final_filename': '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f'}) done waiting for dependent futures
DEBUG:s3transfer.tasks: Executing task IORenameFileTask({'final_filename': '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f'}) with kwargs {'osutil': <s3transfer.utils.OSUtils object at 0x10ae34950>, 'final_filename': '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f', 'fileobj': <open file '/var/folders/kd/yx5n34z97kz10x25_5z9sq9m9qvmpm/T/tmpgrD02f.6A5DbD3C', mode 'wb' at 0x109865a50>}
DEBUG:s3transfer.utils: Releasing acquire 0/None

[pvlbzn]

Set s3transfer to CRITICAL only.

logging.getLogger('s3transfer').setLevel(logging.CRITICAL)

[kyleknap]

Ahh I see what is happening. We need to add a null handler default in s3transfer. I sent a PR to fix this in the s3transfer library.