DESCRIPTION: satisfy static analysis tool for a nullptr dereference
During the static analysis project on the codebase this code has been flagged as having the potential for a null pointer dereference. Funnily enough the author had already made a comment of it in the code this was not possible due to us setting the schema name before we pass in the statement. If we want to reuse this code in a later setting this comment might not always apply and we could actually run into null pointer dereference.
This patch changes a bit of the code around to first of all make sure there is no NULL pointer dereference in this code anymore.
Secondly we allow for better deparsing by setting and adhering to the `if_not_exists` flag on the statement.
And finally add support for all syntax described in the documentation of postgres (FROM was missing).
- Stop the daemon when citus extension is dropped
- Bail on maintenance daemon startup if myDbData is started with a non-zero pid
- Stop maintenance daemon from spawning itself
- Don't use postgres die, just wrap proc_exit(0)
- Assert(myDbData->workerPid == MyProcPid)
The two issues were that multiple daemons could be running for a database,
or that a daemon would be leftover after DROP EXTENSION citus
Mark existing objects that are not included in distributed object infrastructure
in older versions of Citus (but now should be) as distributed, after updating
Citus successfully.
* Improve extension command propagation tests
* patch for hardcoded citus extension name
(cherry picked from commit 0bb3dbac0afabda10e8928f9c17eda048dc4361a)
The file handling the utility functions (DDL) for citus organically grew over time and became unreasonably large. This refactor takes that file and refactored the functionality into separate files per command. Initially modeled after the directory and file layout that can be found in postgres.
Although the size of the change is quite big there are barely any code changes. Only one two functions have been added for readability purposes:
- PostProcessIndexStmt which is extracted from PostProcessUtility
- PostProcessAlterTableStmt which is extracted from multi_ProcessUtility
A README.md has been added to `src/backend/distributed/commands` describing the contents of the module and every file in the module.
We need more documentation around the overloading of the COPY command, for now the boilerplate has been added for people with better knowledge to fill out.
Nils Dijk
Philip Dubé
Philip Dubé
Onur Tirtir
Jelte Fennema
SaitTalhaNisanci
Marco Slot