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Creating a one time projection with "Emit enabled" but not "Checkpoint enabled" results in an inconsistent state #3641

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shaan1337 opened this issue Oct 28, 2022 · 1 comment
Open

Creating a one time projection with "Emit enabled" but not "Checkpoint enabled" results in an inconsistent state #3641

shaan1337 opened this issue Oct 28, 2022 · 1 comment
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kind/bug Issues which are a software defect quality of life Issues that are fairly minor, but which improve the usage of EventStoreDB subsystem/projections Issues relating to the projections framework

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@shaan1337
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Describe the bug
Creating a one time projection with "Emit enabled" but not "Checkpoint enabled" results in an inconsistent state.

To Reproduce
Steps to reproduce the behavior:

  1. Create a one time projection with "Emit enabled" checked but "Checkpoint enabled" not checked.
  2. It will show the error:
Failed to create projection: Emit requires checkpoint
  1. Now check "Checkpoint enabled" and create the projection again. It says:
Failed to create new projection: Duplicate projection names: <projection name>

However, the projection list in the UI does not show the projection.

Expected behavior
Creating the projection at step 3 should have been allowed.

Actual behavior
It seems that the projection has been partially created, resulting in an inconsistent state.

EventStore details

  • EventStore server version:
    21.10.8 / 22.10.0

  • Operating system:
    Tested on Ubuntu
@shaan1337 shaan1337 added kind/bug Issues which are a software defect subsystem/projections Issues relating to the projections framework labels Oct 28, 2022
@hayley-jean hayley-jean added the quality of life Issues that are fairly minor, but which improve the usage of EventStoreDB label Oct 28, 2022
@ylorph
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ylorph commented Jan 2, 2023

This is UI & HTTP api only,
The gRPC library does not support one time time projections

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kind/bug Issues which are a software defect quality of life Issues that are fairly minor, but which improve the usage of EventStoreDB subsystem/projections Issues relating to the projections framework
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@hayley-jean @ylorph @shaan1337