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Fix sys.dm_exec_sessions having rows for backends which are already terminated #3333

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tanscorpio7
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Description

We initialize and keep a local status array which has the entries
for all TDS connections but we did not reset these entries during
connection abort or shmem exit of the backend, which means
future read of this local status array will see these entries as valid.

As a fix, mark the status entry as invalid during proc/shmem exit

Cherry Picked From

#3329

Issues Resolved

[BABEL-5414]

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Signed-off-by: Tanzeel Khan [email protected]

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  • Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is under the terms of the Apache 2.0 and PostgreSQL licenses, and grant any person obtaining a copy of the contribution permission to relicense all or a portion of my contribution to the PostgreSQL License solely to contribute all or a portion of my contribution to the PostgreSQL open source project.

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…erminated (babelfish-for-postgresql#3329)

We initialize and keep a local status array which has the entries
for all TDS connections but we did not reset these entries during
connection abort or shmem exit of the backend, which means
future read of this local status array will see these entries as valid.

As a fix, mark the status entry as invalid during proc/shmem exit

Task: [BABEL-5414]

Signed-off-by: Tanzeel Khan [email protected]
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Pull Request Test Coverage Report for Build 12550690017

Details

  • 5 of 5 (100.0%) changed or added relevant lines in 1 file are covered.
  • 2 unchanged lines in 1 file lost coverage.
  • Overall coverage remained the same at 73.804%

Files with Coverage Reduction New Missed Lines %
contrib/babelfishpg_tds/src/backend/tds/tdscomm.c 2 76.03%
Totals Coverage Status
Change from base Build 12548004513: 0.0%
Covered Lines: 43174
Relevant Lines: 58498

💛 - Coveralls

@shardgupta shardgupta merged commit 5e774aa into babelfish-for-postgresql:BABEL_3_X_DEV Dec 31, 2024
43 checks passed
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4 participants