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Issues

This page contains encountered issues while running the tests. Potential solutions are being explored.

Ypy Array Deep Observe

test_ypy_array:test_deep_observe: Failing with Fatal Python error: Segmentation fault coming from python3.11/multiprocessing/pool.py.

Insert and Delete random characters

Insert and delete random characters scenario: Node.js often do not converge, Python and Browser sometimes do not converge.

YNotebook Update Source

test_jupyter_ydoc_update_source - Fails to append instead of replacing the text content.

Caught error while handling a Yjs update Error

Occasional Caught error while handling a Yjs update Error: Unexpected case

Caught error while handling a Yjs update Error: Unexpected case
    at create (file:///.../src/node_modules/lib0/error.js:12:28)
    at Module.unexpectedCase (file:///.../src/node_modules/lib0/error.js:29:9)
    at findIndexSS (file:///.../src/node_modules/yjs/dist/yjs.mjs:2786:15)
    at findIndexCleanStart (file:///.../src/node_modules/yjs/dist/yjs.mjs:2821:17)
    at getItemCleanStart (file:///.../src/node_modules/yjs/dist/yjs.mjs:2842:18)
    at Item.getMissing (file:///.../src/node_modules/yjs/dist/yjs.mjs:9419:20)
    at integrateStructs (file:///.../src/node_modules/yjs/dist/yjs.mjs:1527:35)
    at file:///.../src/node_modules/yjs/dist/yjs.mjs:1610:25
    at transact (file:///.../src/node_modules/yjs/dist/yjs.mjs:3275:5)
    at readUpdateV2 (file:///.../src/node_modules/yjs/dist/yjs.mjs:1598:3)
e:///.../src/node_modules/yjs/dist/yjs.mjs:3275:5)
    at readUpdateV2 (file:///.../src/node_modules/yjs/dist/yjs.mjs:1598:3)
Caught error while handling a Yjs update Error: Unexpected case

Set the content of a YNotebook cell

Set the content of a YNotebook cell scenario: the source sometimes is appended instead of being set.

KeyError: nbformat

Set the content of a YNotebook cell scenario: python exception after some time KeyError: 'nbformat'

KeyError: 'nbformat'
Traceback (most recent call last):
  File "/.../../tests/clients/notebook_set.py", line 79, in <module>
    asyncio.run(main())
  File "/.../python3.11/asyncio/runners.py", line 190, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/.../python3.11/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/.../python3.11/asyncio/base_events.py", line 650, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/Users/echarles/private/datalayer-io/src/tech/jupyter/rtc-test/jupyter_rtc_test/stresser/../tests/clients/notebook_set.py", line 64, in main
    "document": json.dumps(notebook.source),
                           ^^^^^^^^^^^^^^^
  File "/.../python3.11/site-packages/jupyter_ydoc/ybasedoc.py", line 70, in source
    return self.get()
           ^^^^^^^^^^
  File "/.../python3.11/site-packages/jupyter_ydoc/ynotebook.py", line 209, in get
    cell = self.get_cell(i)
           ^^^^^^^^^^^^^^^^
  File "/.../python3.11/site-packages/jupyter_ydoc/ynotebook.py", line 104, in get_cell
    if "id" in cell and meta["nbformat"] == 4 and meta["nbformat_minor"] <= 4:
                        ~~~~^^^^^^^^^^^^

Silent failure WebSocket failures

The listeners processing the WebSocket messages may silently fail and the user may not be informed of such failures.

Ypy does not support Python threads

See Can not access YDoc object created in another thread #113 y-crdt/ypy#113

Self Mutation

Even without updates, documents are sometimes self mutating.

Failure Isolation

Ypy failure can impacts nodejs and browser clients and make them non-functional (exit xith exception?).