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Commit253de7e

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Fixmake installcheck for serializable transactions.
Commite5550d5 added some newtests for ALTER TABLE which involved table scans. Whendefault_transaction_isolation = 'serializable' these acquirerelation-level SIReadLocks. The test results didn't cope withthat. Add SIReadLock as the minimum lock level for purposes ofthese tests.This could also be fixed by excluding this type of lock from themy_locks view, but it would be a bug for SIReadLock to show up fora relation which was not otherwise locked, so do it this way toallow that sort of condition to cause a regression test failure.There is some question whether we could avoid taking SIReadLocksduring these operations, but confirming the safety of that andfiguring out how to avoid the locks is not trivial, and would bea separate patch.Backpatch to 9.4 where the new tests were added.
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‎src/test/regress/expected/alter_table.out

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@@ -1842,7 +1842,8 @@ DROP TABLE check_fk_presence_1, check_fk_presence_2;
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drop type lockmodes;
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ERROR: type "lockmodes" does not exist
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create type lockmodes as enum (
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'AccessShareLock'
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'SIReadLock'
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,'AccessShareLock'
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,'RowShareLock'
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,'RowExclusiveLock'
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,'ShareUpdateExclusiveLock'

‎src/test/regress/sql/alter_table.sql

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@@ -1271,7 +1271,8 @@ DROP TABLE check_fk_presence_1, check_fk_presence_2;
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--
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droptype lockmodes;
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createtypelockmodesas enum (
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'AccessShareLock'
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'SIReadLock'
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,'AccessShareLock'
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,'RowShareLock'
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,'RowExclusiveLock'
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,'ShareUpdateExclusiveLock'

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