BufferError while running ndvi_summary notebook

[Shourya13]

Following is the error we got while running the ndvi summary notebook along with the specifications of our VM RAM : 32 Disk size : 2TB Free space : 767.8 GB vCPU : 8

[I 13:31:13.568 NotebookApp] Saving file at /land_degradation/land_degradation.ipynb [E 14:17:02.094 NotebookApp] Exception in callback <bound method WebSocketMixin.send_ping of ZMQChannelsHandler(87d1348c-b134-473b-ab6b-570bfb826b7d)> Traceback (most recent call last): File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/ioloop.py", line 921, in _run val = self.callback() File "/home/azureuser/.local/lib/python3.8/site-packages/notebook/base/zmqhandlers.py", line 188, in send_ping self.ping(b'') File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 445, in ping self.ws_connection.write_ping(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1101, in write_ping self._write_frame(True, 0x9, data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1061, in _write_frame return self.stream.write(frame) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 540, in write self._write_buffer.append(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 157, in append b += data # type: ignore BufferError: Existing exports of data: object cannot be re-sized [E 15:31:02.090 NotebookApp] Exception in callback <bound method WebSocketMixin.send_ping of ZMQChannelsHandler(87d1348c-b134-473b-ab6b-570bfb826b7d)> Traceback (most recent call last): File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/ioloop.py", line 921, in _run val = self.callback() File "/home/azureuser/.local/lib/python3.8/site-packages/notebook/base/zmqhandlers.py", line 188, in send_ping self.ping(b'') File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 445, in ping self.ws_connection.write_ping(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1101, in write_ping self._write_frame(True, 0x9, data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1061, in _write_frame return self.stream.write(frame) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 540, in write self._write_buffer.append(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 157, in append b += data # type: ignore BufferError: Existing exports of data: object cannot be re-sized [E 16:12:32.092 NotebookApp] Exception in callback <bound method WebSocketMixin.send_ping of ZMQChannelsHandler(87d1348c-b134-473b-ab6b-570bfb826b7d)> Traceback (most recent call last): File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/ioloop.py", line 921, in _run val = self.callback() File "/home/azureuser/.local/lib/python3.8/site-packages/notebook/base/zmqhandlers.py", line 188, in send_ping self.ping(b'') File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 445, in ping self.ws_connection.write_ping(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1101, in write_ping self._write_frame(True, 0x9, data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1061, in _write_frame return self.stream.write(frame) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 540, in write self._write_buffer.append(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 157, in append b += data # type: ignore BufferError: Existing exports of data: object cannot be re-sized [E 17:24:02.092 NotebookApp] Exception in callback <bound method WebSocketMixin.send_ping of ZMQChannelsHandler(87d1348c-b134-473b-ab6b-570bfb826b7d)> Traceback (most recent call last): File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/ioloop.py", line 921, in _run val = self.callback() File "/home/azureuser/.local/lib/python3.8/site-packages/notebook/base/zmqhandlers.py", line 188, in send_ping self.ping(b'') File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 445, in ping self.ws_connection.write_ping(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1101, in write_ping self._write_frame(True, 0x9, data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/websocket.py", line 1061, in _write_frame return self.stream.write(frame) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 540, in write self._write_buffer.append(data) File "/home/azureuser/.local/lib/python3.8/site-packages/tornado/iostream.py", line 157, in append b += data # type: ignore BufferError: Existing exports of data: object cannot be re-sized

This is where the execution has been stuck and the values are not updating anymore.

[py5gol]

Hi @Shourya13, thanks for using FarmVibes.AI - Could you please share the date range and area of interest? We will check this issue and get back to you soon. Thanks, Roberto

[Shourya13]

Hi @py5gol, thanks for the support. Following are the details : Date range : 01 Apr 2020 - 30 Dec 2020 Area of interest : -91.838525 42.603940, -91.838320 42.607137, -91.835413 42.607137, -91.835430 42.603931, -91.838525 42.603940

[Shourya13]

@py5gol Update : After re-running the notebook, we got no errors but still everything has stopped updating after they failed.

[py5gol]

Thanks for the update, @Shourya13. We have seen the problem with negative duration, and a fix will be released soon. I am investigating the issue using the parameters you shared above.

[Shourya13]

@py5gol We tried with the updated code as well and the issue of BufferError persists for ndvi_summary.ipynb

[py5gol]

Hi @Shourya13, I am sorry for the long delay. We release a new version of FarmVibes.AI two weeks ago. Could you update your instance and try it again? I am closing this issue for now, but feel free to reopen it if you are still having problems.