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opt: fix assertion failure due to lax empty key #43722

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merged 1 commit into from
Jan 6, 2020

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@RaduBerinde RaduBerinde commented Jan 4, 2020

PR #43532 removed the concept of lax constant functional dependencies.
There is a left-over case when we downgrade a key: if we had a strong
empty key, the result is a lax empty key which is no longer a concept.

This change fixes this by removing the key altogether in this case.

Fixes #43651.

Release note (bug fix): fixes "expected constant FD to be strict"
internal error.

@RaduBerinde RaduBerinde requested a review from a team as a code owner January 4, 2020 00:05
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:lgtm:

[nit] the issue referenced in the commit/PR message (Fixes #43532) isn't an issue -- it's the original PR that created the issue. Is there an issue you meant to reference?

Reviewed 3 of 3 files at r1.
Reviewable status: :shipit: complete! 1 of 0 LGTMs obtained (waiting on @andy-kimball)

PR cockroachdb#43532 removed the concept of lax constant functional dependencies.
There is a left-over case when we downgrade a key: if we had a strong
empty key, the result is a lax empty key which is no longer a concept.

This change fixes this by removing the key altogether in this case.

Fixes cockroachdb#43651.

Release note (bug fix): fixes "expected constant FD to be strict"
internal error.
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Thanks, fixed the issue number.

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:lgtm:

Reviewable status: :shipit: complete! 1 of 0 LGTMs obtained (waiting on @andy-kimball)

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:lgtm:, thanks for fixing this - I missed this case.

Reviewable status: :shipit: complete! 2 of 0 LGTMs obtained (waiting on @andy-kimball)

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bors r+

craig bot pushed a commit that referenced this pull request Jan 6, 2020
43703: storage/batcheval/result: perform various cleanup on LocalResult struct r=nvanbenschoten a=nvanbenschoten

This PR contains a series of cleanups to the `result.LocalResult` struct. It leaves the structure in a good position to be extended to include information about newly written, updated, and removed intents, which are hooked into the `concurrency` package in future commits the same way that `UpdatedTxns` is currently hooked into the TxnWaitQueue.

The changes are broken into a series of incremental steps to make them easier to review in isolation.

43722: opt: fix assertion failure due to lax empty key r=RaduBerinde a=RaduBerinde

PR #43532 removed the concept of lax constant functional dependencies.
There is a left-over case when we downgrade a key: if we had a strong
empty key, the result is a lax empty key which is no longer a concept.

This change fixes this by removing the key altogether in this case.

Fixes #43651.

Release note (bug fix): fixes "expected constant FD to be strict"
internal error.

43734: pgwire: deflake TestAuthenticationAndHBARules r=knz a=knz

Fixes #43733.

This was my mistake to fix, I had forgotten that cluster settings
propagate asynchronously.

Release note: None

Co-authored-by: Nathan VanBenschoten <nvanbenschoten@gmail.com>
Co-authored-by: Radu Berinde <radu@cockroachlabs.com>
Co-authored-by: Raphael 'kena' Poss <knz@thaumogen.net>
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craig bot commented Jan 6, 2020

Build succeeded

@craig craig bot merged commit 0af511c into cockroachdb:master Jan 6, 2020
@RaduBerinde RaduBerinde deleted the fix-downgrade-key branch January 7, 2020 18:21
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sql: internal error: expected constant FD to be strict: lax-key()
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