mirror of
https://github.com/neondatabase/neon.git
synced 2026-01-08 05:52:55 +00:00
ae6e27274c
so that we can easily plug in LFC clearing as well. Private discussion reference: <https://neondb.slack.com/archives/C033A2WE6BZ/p1722942856987979>
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from fixtures.log_helper import log
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from fixtures.neon_fixtures import NeonEnvBuilder
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def test_oid_overflow(neon_env_builder: NeonEnvBuilder):
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env = neon_env_builder.init_start()
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endpoint = env.endpoints.create_start("main")
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conn = endpoint.connect()
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cur = conn.cursor()
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cur.execute("CREATE EXTENSION neon_test_utils")
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cur.execute("CREATE TABLE t1(x integer)")
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cur.execute("INSERT INTO t1 values (1)")
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cur.execute("CREATE TABLE t2(x integer)")
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cur.execute("INSERT INTO t2 values (2)")
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cur.execute("SELECT x from t1")
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assert cur.fetchone() == (1,)
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cur.execute("SELECT x from t2")
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assert cur.fetchone() == (2,)
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cur.execute("VACUUM FULL t1")
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cur.execute("VACUUM FULL t1")
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cur.execute("vacuum pg_class")
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cur.execute("SELECT relfilenode FROM pg_class where relname='t1'")
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oid = cur.fetchall()[0][0]
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log.info(f"t1.relfilenode={oid}")
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cur.execute("set statement_timeout=0")
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cur.execute(f"select test_consume_oids({oid-1})")
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cur.execute("VACUUM FULL t2")
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cur.execute("SELECT relfilenode FROM pg_class where relname='t2'")
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oid = cur.fetchall()[0][0]
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log.info(f"t2.relfilenode={oid}")
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endpoint.clear_shared_buffers(cursor=cur)
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cur.execute("SELECT x from t1")
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assert cur.fetchone() == (1,)
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cur.execute("SELECT x from t2")
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assert cur.fetchone() == (2,)
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