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119b86480f
`pg_regress` is flaky: https://github.com/neondatabase/neon/issues/559 Consolidated `CHECKPOINT` to `check_restored_datadir_content`, add a wait for `wait_for_last_flush_lsn`. Some recently introduced flakyness was fixed with #4948. --------- Co-authored-by: Joonas Koivunen <joonas@neon.tech>
37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
from fixtures.log_helper import log
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from fixtures.neon_fixtures import NeonEnv, check_restored_datadir_content
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# Test subtransactions
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#
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# The pg_subxact SLRU is not preserved on restarts, and doesn't need to be
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# maintained in the pageserver, so subtransactions are not very exciting for
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# Neon. They are included in the commit record though and updated in the
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# CLOG.
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def test_subxacts(neon_simple_env: NeonEnv, test_output_dir):
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env = neon_simple_env
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env.neon_cli.create_branch("test_subxacts", "empty")
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endpoint = env.endpoints.create_start("test_subxacts")
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log.info("postgres is running on 'test_subxacts' branch")
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pg_conn = endpoint.connect()
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cur = pg_conn.cursor()
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cur.execute(
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"""
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CREATE TABLE t1(i int, j int);
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"""
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)
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cur.execute("select pg_switch_wal();")
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# Issue 100 transactions, with 1000 subtransactions in each.
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for i in range(100):
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cur.execute("begin")
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for j in range(1000):
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cur.execute(f"savepoint sp{j}")
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cur.execute(f"insert into t1 values ({i}, {j})")
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cur.execute("commit")
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check_restored_datadir_content(test_output_dir, env, endpoint)
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